Cummins isx whistling noise at idle Trucks, Buses, CE, AG Software & Discussions Cummins 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 05 cummins isx 400 Cm870, roughly idle Thread Rating: 24 Vote (s) - 2. the truck is deleted with an ez link tow tune. Hopefully rebuilding the turbo will solve my problems. Nov 16, 2025 · Rawze. Here's the sound I'm talking about. Jul 18, 2014 · I have a deep knock each engine revolution that sounds loudest in front of the truck or under the drivers door. Feb 21, 2019 · iRV2 Forums > POWER TRAIN GARAGE FORUMS > Cummins Engines Is it normal? motor changes sound at idle as if it's cycling something iRV2. Anyone have any ideas or had this before? The VGT actuator has been replaced Dec 24, 2023 · 2012 Kenworth T800 with Cummins isx15 cm2250. When using the exhaust brake and I've been on the road for an hour or two, there is occasionally a high pitch squeal when the exhaust brake is under load. Removing the belt and starting the truck the noise was still there. Customer: I have an intermittent knock and its accompanied by what sounds like a spun rod bearing but the noise is coming from the top of the engine. It would go away at about 14-1500 rpm. Cummins ISX is an inline 6-cylinder turbocharged diesel engine with about 600 horsepower and 2050 pounds-feet of torque. If I turn my head I don’t hear Whistling after delete? Just deleted my 2014 6. 7L Cummins Turbo Diesel trucks!?! I tried on my 2021 Cummins, bu Black smoke and low power in a Cummins ISX often stem from clogged EGR valves or faulty turbochargers. When I get under the truck and lean in on the oil pan there's a pretty Dec 7, 2015 · Also it's whistling loud enough to wake up the neighborhood during high idle or certain points of throttle input. But when it shuts up, idle usage goes down to . I took the truck to a diesel shop who told me it was fuel knock. White smoke and rough idle are still there. May 30, 2023 · Only the #6 injector seemed to have any chance, as it cleared up the smoke a decent amount but still not entirely and did not fix the rough idle. Nov 4, 2014 · I need some help/ideas of what i should look at next Here's what happened. I took it back and a different mechanic came out with a Feb 15, 2020 · 2014 2500 Cummins, stock, 199,500 miles . Truck is recently deleted and did not notice the knock before delete. Its normal on cool/cold days. Was thinkin it was the Pusher style intake horn, put the OEM one on with Found 1 result (s) for your search My isx Cummins is making a noise like there are aluminum rods rattling against each other. Dec 2, 2024 · I have a 2022 6. Low oil pressure at idle could be a result of a system leak, low oil levels, or a clogged or poor-quality oil filter. There is a high-pitched squeal or whistling sound coming from the pipe on the exhaust side of the turbo. I always leave my truck idling while fueling up, sometimes I'll high idle it. It has a knocking noise at 1500 rpms especially under load. CEL came on, running very rough and the code is P0304 Cylinder 4 misfire. We cover things from common problems and maintenance information to performance modifications, ranging from basic bolt-on mods to turbo upgrade guides. Truck is full A rough idle in the Cummins ISX DOHC can stem from a malfunctioning delta pressure sensor or an Exhaust Fuel Economy (EFE) valve issue. If I understand correctly, you have a Cummins ISX 15L 600 HP, and it makes some noise like a vacuum cleaner? Have you looked for exhaust leaks, around the exhaust manifold, and turbo mounting? Exhaust leaks usually leave behind soot stains. Most Likely Issue If you hear a high-pitched whistling sound from your Cummins engine, there's a good chance it involves a boost leak. It's definitely coming from the rear of the engine compartment and narrowed it down to the EGR Aug 20, 2022 · My 2014 is idling rough and surging while driving down the road. 140k miles, warranty is kaput, $75 in parts for new bolts and It just spontaneously started gradually raising the idle from 800RPM to around 1000RPM then this deafeningly loud high pitched whistling screeching metallic grinding or possibly air leaking sound Jan 11, 2009 · I have an o4 Volvo vn670 with a 450Hp ISX. My question is, could the turbo be faulty, or could something like a sensor cause this issue? Smoke appears Nov 13, 2025 · Experiencing a turbo whistle at idle in your Cummins ISX engine? This can be quite unsettling, and it's crucial to understand what's causing that noise. ran about 140 miles on the roughest roads you can imagine at an average speed of 10 to 20 miles per hour at best. If I'm driving with any kind of throttle, it Mar 6, 2012 · The Vanes of the Turbo will open and close I can hear the the whistle tone change, basically it will idle for 2 minutes, you can hear the whistle, then you can hear the whistle go away and it be pure exhaust sound, then about 2 seconds later the whistle will come back on and repeat the process until a decent temperature is achieved. Sinister diesel egr delete. Driving down I75 I heard a high pitch squeal coming from the right side of the engine. Just curious if anyone else has had this happen. Learn to increase the longevity and performance of your engine. Nov 13, 2025 · Experiencing a turbo whistle at idle in your Cummins ISX engine? This can be quite unsettling, and it's crucial to understand what's causing that noise. 7 73,000 miles , used a mini maxx v2 , and a race pipe , egr is still in place but unplugged. By following these troubleshooting steps and taking preventative measures, you can keep your engine running smoothly and avoid costly repairs. 9L cummins engine vehicle and everytime load is given via accelerator high rpm's on idle or under high load there is a loud high pitch bearing noise that i cannot isolate from engine area. Over the I have a ISX 15 CM2250 that is surging at boost pressure during idle, you can hear what appears to be a valve oping and Cummins ISX fuel pump failure manifests through distinct symptoms like sudden loss of engine power, difficulty starting (especially cold), engine stalling at low speeds, rough or erratic idle, increased white or blue exhaust smoke, significantly reduced fuel economy, loud metallic noises from the engine, and illuminate Jul 15, 2015 · I have searched left and right across these forums trying to find as much info about the "ticking" noise I would hear at idle. Knowing these causes can help you narrow down your search during the diagnosis phase. 96K subscribers Subscribed Mar 14, 2021 · D. My first thought was turbo and i have confirmed with great expense this was not the case. Inspect the turbocharger for shaft play and damaged blades. Now it's gotten louder and more noticeable. A whistling turbo isn't just an annoyance; it can indicate underlying problems Nov 13, 2025 · Common Causes of Turbo Whistle at Idle Okay, so your Cummins ISX is whistling at idle. The turbocharger is essentially an air compressor. Sep 21, 2024 · The ISX Cummins engine, while powerful and reliable, commonly faces issues like EGR valve failure, turbocharger problems, fuel injector issues, and excessive oil consumption. Let's break down the most common culprits behind this annoying sound. runs really bad then will clear up and run fine starting to get worse and does it more, could it be turbo or injectors? Oct 30, 2025 · Worried about ISX Cummins oil pressure at idle? Learn what’s normal, what’s not, and how to spot low-pressure symptoms before they become serious problems. YouTube - 2002 Cummins 4" Straight-Pipe (rev then acceleration) So I looked under my neighbors truck and it looks like a 4" system with a single High idle and excessive turbo spool in the 2015 Kenworth W900 with ISX15 can stem from a faulty turbo actuator or boost control solenoid. A whistling turbo isn't just an annoyance; it can indicate underlying problems May 28, 2011 · Intermitent Whisle for 7-9 sec , happens every 25-35 minn even at idle (Cummins ISX) Discussion in ' Trucks [ Eighteen Wheelers ] ' started by Narcis. 3l squealing noise Discussion in ' Heavy Duty Diesel Truck Mechanics Forum ' started by dtreid, Nov 20, 2018. i parked it and hoped it was nothing, when i drove it home it was still doing it sitting Nov 15, 2017 · So my truck has been making a ticking noise while running, please helps me to figure out what it is, where it could be coming from, what I can do to possibly fix this, or if it is just normal and nothing to worry about. 5 inch tbe flo pro exhaust Oct 5, 2025 · I want to personally thank everyone who has donated to the forum recently. Also, check all air intake hoses and clamps for leaks or cracks, as these can cause whistling sounds. Tune 2017 x15 High Turbo Boost at Idle . no! Hehe At low idle at a stop I can hear my fuel pump wine. I thought the pretty loud whistle/hiss was because it was straight piped, so I bought a muffler. It helps pay for the $790/month internet bill that the forum consumes. Understand the 5 common Cummins X15 Problems, how to diagnose them, and their solutions. The exhaust brake has made a whistle noise since I installed the flo pro. Feb 25, 2013 · The rough idle down is choppy rail pressure, various causes. Inspect the wastegate actuator for proper movement and check the boost pressure sensor for accurate readings. Do you have a rail pressure gauge? I replaced my injectors and my truck idled down rough nearly all the time. 50x17 3. Apr 13, 2010 · New to the Cummins got a few questions: first when the truck is idling I can hear what sounds like an exhaust leak noise from the driver side. Grid heater was deleted. When reinstalled I lighted up the lever to the right and actuator gear to 22. When I start the truck on cold mornings and turn the exhaust brake on it will spool up like normal but then start to surge. Turbine end heat soak into the bearing housing results in oil carbonisation and corrosion of the bearing system. The good news? Some causes are minor and easy to fix. So I did some more googling May 14, 2022 · 2017 x15 knocks under acceleration . Nov 25, 2021 · 2015 cummins isx when Its idling at 900 rpm I can hear a howling/humming noise. There is no oil or coolant present in the pipes. This morning me and my brother adjusted the valve lash but the sound is still there. . I also noticed, while it's whistling at idle, my idle usage shows 2 gal/hr. Oct 10, 2019 · My truck just recently started doing this. I have a 2009 workstar with the cummins ism 425. After I got home, I let it idle and tried to locate where the sound was coming from. May 1, 2025 · No boost gauge and this engine has almost 700K on it, it has had a in frame at some point. It's like using webMD to try and diagnose the common cold lol. 7 Cummins with 59000 mi. Jan 10, 2024 · Wanted to see if anyone else has experienced their London Aire etc running hot while towing 16-17k. Gets noticeably worse when you get to 1500 rpm and around 63mph. can still Nov 13, 2025 · Experiencing a turbo whistle at idle in your Cummins ISX engine? This can be quite unsettling, and it's crucial to understand what's causing that noise. Also does it at high idle. Took actuator off the turbo and checked the actuator lever on the turbo and couldn't move it, so I removed the turbo, cleaned it and got lever moving freely. I took a video and if you listen carefully, you can May 5, 2007 · Last night on my way home from work, I noticed a high pitch whistle or squeal and it got louder with RPMs/throttle. It is in perfect rhythm with the pulsating of the fuel pressure gauge. Nov 18, 2014 · On my signature 600 cummins, gasket blew out on #1 ( exhaust manifold ) and you could clearly see it leaking blowing exhaust on the head as the ISX is red. I forgot to mention that once warmed up the turbo makes a whine/siren sound along with the typical turbo whistle. Nov 6, 2013 · Thats the factory high idle to warm the engine. Initially released in 1998 as a response to tightening EPA emissions standards, the ISX replaced the N14, Cummins’ original workhorse engine. I have a whistle in my turbo. Mar 24, 2015 · I have a 2017 Kenworth T680 with a Cummins ISX 15 550 hp engine. Not a normal engine knock but more like air escaping under pressure. The main damage occurs to the shaft seal ring and grooves, turbine Oct 23, 2025 · High idle mode serves the purpose of building and maintaining engine temperature, enhancing coolant circulation, and improving overall engine performance. com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. A few weeks ago I noticed a "popping" sound in the exhaust and intake. It does not do it at idle, only when accelerating and it never made that noise before. A whistling turbo isn't just an annoyance; it can indicate underlying problems Jan 14, 2020 · I noticed here lately that the turbo or I believe it's the turbo makes a little whistling sound while driving around on my 2017 Tradesman with about 35K miles. 42 gears 68rfe trans. Its not the PTO high idle that everyone talks about. The whistle is at idle and with increased RPMs. Cut the cruise and drops down to 700 it doesn’t do it. I think the delta-p sensor is probably toast and not allowing the ecm to get an accurate reading on the flow through the egr Venturi. Didn't think much of it. 7 Cummins Squealing Noise at Idle: Understanding the common causes of a squealing noise in a 6. Jan 24, 2018 · Jump to page : 1 Now viewing page 1 [50 messages per page] Oct 10, 2013 · Three thousand miles ago I noticed a loud squeal coming from the engine compartment. Jul 8, 2020 · My exhaust brake 90% of the time has a whistle noise. com: Rawze's ISX Technical Discussion and more / Big Truck Technical Discussion / ISX Related Help / Turbo squealing Jun 28, 2025 · Most Likely Issue If you're hearing a high-pitched whistling noise from your Cummins engine, it’s likely related to a boost leak. Aug 19, 2022 · The oil pressure at idle for a Cummins ISX engine may vary, but it is generally recommended to be around 15 psi. Feb 1, 2018 · My truck makes this slight whistle noise during idle that goes away once the gas pedal is pressed (the noise is there whether in park or in drive). It is recommended that you idle the engine for two to three minutes to cool the bearing system before shutting down. So I’m really leaning A faulty EGR cooler can lead to decreased fuel economy, increased exhaust emissions, and decreased engine performance. I pushed the engine brake button and everything went back to Aug 6, 2014 · Okay so first off trucks an 08 with full deletes intake straight pipe had a smart s67me on it and just installed a xrt pro race yesterday So I've had these problems for a while and I'd really like to address them Truck has a very random rough idle sometimes smooth as glass other times has Shake can be seen in mirror and felt in steering wheel no smoke at startup or otherwise Then the stumble Mar 20, 2019 · I’ve ordered a rebuild kit for the turbo. This lope at idle is the egr opening and closing which starves the engine for oxygen. Efi live. I think its cool how dodge and cummins made the pickup engine so much quieter than the truck/bus engine. Regularly maintain the turbo system by cleaning or replacing air filters and ensuring proper oil Okay, so we've talked about normal whistles, but when should that Cummins ISX turbo whistle at idle actually make you hit the brakes and call a mechanic? It’s all about paying attention to the context and accompanying symptoms, guys. Nov 13, 2025 · A turbo whistle at idle in your Cummins ISX engine can be a sign of various issues, from simple air leaks to more complex turbocharger problems. Start by inspecting the EGR cooler and valve for carbon buildup, which restricts airflow. com: Rawze's ISX Technical Discussion and more / Big Truck Technical Discussion / ISX Related Help / X15 efficiency idle vibration Nov 13, 2025 · Experiencing a turbo whistle at idle in your Cummins ISX engine? This can be quite unsettling, and it's crucial to understand what's causing that noise. It only happens when I let off the throttle, doesnt seem to matter what 4 days ago · Rawze. It doesn’t seems to effect performance at all and there’s no CEL or codes for it. May 21, 2020 · 2014 Cummins ISX in a Freightliner whistle at idle and raising RPMs about 100-200? Discussion in ' Trucks [ Eighteen Wheelers ] ' started by truckin24, May 21, 2020. Tibbitt said: ↑ They still haven't figured out the fuel pump yet? That #### things been destroying the isx since the 2250 generation. Since unplugging either normalizes idle, inspect the EFE valve for proper operation and vacuum leaks. Can I smooth this out and quiet it up somehow, maybe with my tune? Nov 19, 2011 · Cummins ISM engine mounted in FODEN truck. New turbo cant Mechanic's Assistant chat Customer: I have a 2014 Volvo VNL with a Cummins ISX 15 engine. com: Rawze's ISX Technical Discussion and more / Big Truck Technical Discussion / ISX Related Help / Isx15 2250 turbo squeal Mar 15, 2021 · Hi, all 2018 Cummins deleted with MM3. Failure from excessive exhaust temperatures or hot shutdown of engine results in carbon build-up. I can't remember if its been there the whole time or if it just started happening recently. Oct 21, 2016 · My '16 at about 10,000 miles started whistling quite loudly when the exhaust brake was applied, the whistle sounded similar to the old 5. Oct 2, 2011 · Cummins ISX15 cold idle? Discussion in ' Heavy Duty Diesel Truck Mechanics Forum ' started by HalpinUout, Dec 31, 2017. The engine starts and idle fine, as you step on the accelerator engine sounds fine until you reach abot 1200-1300 rpm, at this point you hear a whistling sound (like turbo) and a constant rattling of the engine. We towed our stacker for the first time out to Glamis for the holidays and got the check engine Mar 28, 2023 · I have a 2012 Peterbilt with an ISX in it that has been previously tuned. I replaced my exhaust manifold and found that the gasket on cyl #6 had over an inch gap. What is this? Sep 12, 2018 · I have a ppei tune installed on my ram and I really like it. It Jun 14, 2011 · 2001 5 speed, 210,000 miles, bone stock. It doesnt squeal on start-up, shut down, or regular driving. - Thank you again. Regular maintenance and timely fixes can prevent costly repairs and extend engine life. Here are seven symptoms to watch out for: If you're looking for an EGR cooler for your Cummins ISX give us a call (872) 240-4144 Dec 7, 2021 · 2015 cummins isx cm2350 has a rough idle that shakes the whole truck but only in the winter time when its cold outside. I think its worse when the engine is cold, but i will verify this tonight or tomorrow morning. Jan 4, 2011 · Switched to . It didn’t do it when I first deleted and tuned it. It doesn't do it when its warm outside. Sep 12, 2017 · At idle the egr valve will be cracked open to allow egr to enter the intake. Only lasts for 30 to 60 seconds, its an ISX in a 2008 IH pro star. Feb 19, 2025 · Hearing a ticking noise from your 6. Out of the blue about a few days ago, my truck started rattling really bad at idle, almost like as if it was on the 12v tune, but it wasnt. 5 (?) 24 valve. In extreme cases, it can even cause the engine to go into a 5mph derate. 9's that whistled under boost. Trucks an 06 2500 with EFI by Ryan, CAI, intake horn, and 5" exhaust. I have heard that raceme does have this feature. Can't replicate the sound in park and givin it throttle, still building enough boost, no excessive smoke, mpgs are still freaking awesome and drivability is still on par. Any ideas? It goes without saying that the Cummins ISX is one of the most popular and well loved diesel engines on the road today. It seems to be on the driver side I have a link to a video too Feb 5, 2016 · I started getting a mild vibration, and grinding rattling noise (box of rocks like) from the front of the motor a few weeks back. I thought it was my serpentine belt, so Aug 3, 2021 · Last week I went on a 2600 mile road trip and at our last fill up about 400 miles from home, I noticed a surge while idling while fueling up. 8 gal/hr. Going down the road under normal load I get a slight high-pitched whistling sound . I changed out my exhaust manifold as it was leaking out of number 1 and 4 and thought that was it i also checked the turbo while i had it apart all looked good. If that is the culprit don’t you think the smoke could be from the burning oil? I’m really hoping to not have to do injectors. High pitched whining noise from the engine gear train that changes with engine rpm. So this is a 2013 ISX15 with 953k on it. I read everything from phasing the cp3 pumps to correcting valve lash even damaged flex plates. 73 4X4 Limited Crew Cab Long Bed DRW. His truck has the whistle / flutter sound out of the exhaust when the turbo's spooling back down to idle. It gets extremely loud when the engine fan turns on. At idle you can run it up to 1500 Cummins ISX engines are powerful but may face issues like EGR valve failure, turbocharger problems, fuel injector malfunctions, DPF clogging, camshaft wear, and excessive oil consumption. It’s a 2016 fully deleted 5” straight pipe and warp tuned by DRD. Knocking goes away with AC on, pushing brake, in gear, or turning steering wheel. I pulled it all apart again, and this time, I also removed the crossover tubes to inspect/clean them. It's currently used in many heavy-duty trucks like the Freightliner M2 and the International DT-466. Turns out it was not the water pump, but failing bearings in the Hello, my name is ***** ***** I can help you. I had no starting issues until last winter (2 years with symptoms) and it happened out of the blue. 14 tune on my MM yesterday along with the Overdrive tune. Jan 6, 2017 · 07 international cummins isx blows white smoke for a few min. You can really hear it after his first rev. Since the new install the sound is gone. They get super load when Mechanic's Assistant chat Customer: My ISX Cummins is making a noise that sounds like aluminum rods rattling against each other. What causes this? Aug 7, 2016 · MHH AUTO MHH AUTO FORUMS. It's only at idle, to maybe 100 or 200 rpm above idle. If you don't accelerate too hard it sounds like a low turbo whistle. 7 cummins engine at idle and don’t know what to do? I have a 2011 international with 300k miles with isx 450 making knocking sounds occasionally when going up a hill or putting it under acceleration load. 7 Cummins engine at idle is crucial for troubleshooting and addressing the issue promptly. Also sounds like i have an old noisy double disc clutch (Thats probably the Jul 5, 2023 · Sometimes engine, fuel system, or emissions equipment failure is inevitable, but by observing a sound maintenance regimen you give your ISX the best possible chance of going the distance. The air compressor has been replaced recently. Its not very loud but you can hear it. Leaks in the Intake System Intake system leaks are a frequent cause of turbo whistles. I didn't notice it throughout the trip, only at the last fuel stop. This means regular oil changes at the proper interval (no extended schedules) and using both the engine oil and filter specified by Cummins (no cheap knock-offs). Best of all it's totally FREE! You are currently viewing our Apr 17, 2009 · Thats funny how the Dodges do not whistle at all. May 24, 2021 · Re: White Smoke With Rough Idle And Missing Sound Originally Posted by Jhobbes04 Thanks, Bob! Guess I’ll have to wait and be patient for someone to help out. com: Rawze's ISX Technical Discussion and more / Big Truck Technical Discussion / ISX Related Help / CM871 Idle Fluctuation Nov 5, 2014 · Search this forum Printer friendly version E-mail a link to this thread Aug 9, 2016 · Cummins has a rebuild kit for them when they get sooted up and start knocking like a rod But, have you done an overhead lately, and how many miles on the truck? Dec 8, 2008 · The guy across the street from me has a 98. Regular maintenance, such as cleaning the EGR valve, changing the oil, and maintaining the Diesel Particulate Filter (DPF), is crucial to prevent these problems. ISX is the successor of the legendary N14 engine designed by Cummins. Idle surging in an ISX Cummins often stems from faulty fuel injectors, a malfunctioning fuel pressure regulator, or issues with the electronic control module (ECM). The charge air pipe to the cooler gets hot. Any idea of where this whistling can be coming from? Sorry, this post was deleted by the person who originally posted it. Mainly around idle speed, and low speed accel and decel. I think the only way to keep it from doing that is to press the brake. got out of the bush and now under hard acceleration or pulling there is a high pitch squeal, only hear it when turbo is boosting. We checked the blades, and there is no play, and they spin freely. 5”exhaust back from turbo. I hear “normal” allot from them. However it seemed to be coming around the turbo area. com: Rawze's ISX Technical Discussion and more / Big Truck Technical Discussion / ISX Related Help / Ticking or Rattling noise In CYL #1 I have 2021 w900 x15 Cummins making rattling noise in front of engine power is good checked injectors tested fine Mechanic's Assistant chat Customer: I have a 2021 W900 with an X15 Cummins engine that's making a rattling noise in the front. Besides being a superior truck engine because of its torque and horse, the engine is also durable Hope I'm not repeating an old thread but I couldn't find an existing one. Check the fuel injectors and high-pressure fuel pump for clogging or wear. What is everyone setting their defuel at for the turbo I would like to not need to studd this head for a while. Mar 16, 2016 · The whining noise has to be an exhaust leak I read the codes and the only codes were exhaust related stuff. Verify sensor wiring and connections for damage or corrosion. The power is good, and I've checked the injectors, which tested fine, and the pressure is also good. The ISX ISM ISL ISC ISB all there turbos scream! Thats the only thing you here on a isx most the time is the turbo. It's coming from under the hood, definitely not the usual "hiss" you hear at the tailpipe. M, May 24, 2011. I have not noticed any power loss. Honestly shocked at idle almost seems to sound exactly the same as with dpf on. 2 days ago · Rawze. A whistling turbo isn't just an annoyance; it can indicate underlying problems Nov 17, 2021 · As title says I'm chasing a whine that get worse under heavy acceleration. My ideas are leaning towards metering and timing actuators. Sounds like a broken hair dryer screech when you punch it. It eventually got to where the sound would be constant, so we took it in to the dealer who said it was a sheared bolt on the exhaust manifold. It’s got this constant turbo bark/flutter at idle that only seems to become audible through the intake as soon as the air compressor governs. Bump it up to 1000 then it runs normal. Cummins is a joke. Check the tightness of all your Feb 20, 2011 · Whistling / squealing noise 9400i Discussion in ' International Forum ' started by DHF, Jun 3, 2011. Feb 16, 2025 · A high-pitched whistle, like a tea kettle about to blow, coming from under the hood. Introducing the 6. Jan 2, 2020 · Recently deleted and when running the exhaust brake it makes a high pitched squeal outside and what seems to be the cab. Truck idles at 700 and if you bump it up once to 800 builds boost and acts like your going through a regen. Just today it started a loud popping noise coming from the air intake area. com Google Cummins engines ISX ISX15 X15 common problems why my cummins engine breaks Symptoms of a Failing Turbo: 9 Bad Turbocharger Signs Customer: I have a 2016 truck with a Cummins ISX 15 engine. If the whistle is a brand new sound that wasn’t there before, that’s your first clue to be concerned. Lucky I was 1/2 mile from my fuel stop. It sounds exactly like a belt squeal. May 11, 2020 · Just in the past day or so I have a pretty loud whistling or whining noise coming from what sounds like the engine bay (at times it almost sounds like the noise wind would make coming in through a cracked window or door). The oil pressure looks normal for a Cummins (high pressure at anything above idle and lower at idle). What's weird is, it goes quiet after about 10 minutes at idle. Tuning from Korey Willis. How Long Can A Cummins Truck Idle? Cummins engines are known for their durability and reliability, but when it comes to idle time, it’s important to find a balance for optimal performance. audio on laptop isn't the greatest though. Almost sounds like a vacuum leak. 5 degree mark Turbo noise on idle, power loss, smoke in cabin ISX Cummins Engine Surging at Idle: Causes and Fixes ISX Cummins engines may face idle surging due to fuel system or sensor malfunctions. Any ideas? A high-pitch howling noise on the left side of a Cummins ISX engine often indicates turbocharger bearing wear or compressor wheel damage. They were also clean. I have noticed recently that there is a weird whining noise at idle and acceleration that you can hear in the cab of the truck. After having them change all the injectors it's still there. The PTO high idle isn't available on our 03 6 speed trucks. I was wondering if any of you know how to manually control the vgt vanes. Surging in the Cummins ISX15 typically stems from fuel delivery problems or turbocharger issues. Immediately stopped and noticed ticking coming from the motor through the exhaust. A boost leak occurs when air escapes from the system under pressure from the turbocharger. I get a squealing sound from my engine compartment only when accelerating and I hit about 1900 or so RPM's. Only when accelerating and only when I hit approximately 1900-2000 rpms. Am I doing my truck harm by driving it in the meantime? @ Chrisn162001 any advice or suggestions on this issue? 2014 RAM 3500 (Aisin) 3. so far the shop has replaced injectors, fuel pressure regulator, mass air sensor, air temp sensor, and crank sensor. Had a problem with chuffing and boost going up and down at idle and of course rough idle as a result. Any ideas or suggestions will be greatly appreciated. Experiencing a turbo whistle at idle in your Cummins ISX engine? This can be quite unsettling, and it's crucial to understand what's causing that noise. Did all the work myself. Bump it back up to 800 and it does it Apr 24, 2019 · The sound only occurs at over 65+ and 2100 rpm its a loud pitched squeal. A whistling turbo isn’t just an annoying sound—it can be a sign of a hidden issue. There’s no surging when actually using the exhaust brake to slow down. It won't go Dec 11, 2023 · What are the possible causes of a knocking sound, and what is the best way to determine which one it is? One of my trucks has developed a light knock that sounds alarmingly like rod knock. The owner claimed that this probelm started about 3 months ago and it is now getting louder. Cummins says it’s normal…. Dec 4, 2019 · Hi Big problems with my 2011 6. During the initial inspection I thought it might be the A/C tensioner causing the problem. This can lead to reduced performance, lower fuel efficiency, and even long-term damage if left unchecked. Customer: I have kenworth T800 and has ISX CUMMINS Engine when i accelarate to high R P M the whistle sound change to scratching sound when in idle R P M sounds goes away some time very little sound please advice Nov 19, 2021 · 2015 cummins isx 2350 there's a ticking noise going on i can hear it when the truck is idling it sounds like it's coming from the oil pan/transmission area. Thanks for all the help! Aug 21, 2009 · About a month ago we started to notice this high-pitched whine sound when accelerating. Aug 13, 2013 · Cummins ISX CM871 Technical discussion Discussion in ' Trucks [ Eighteen Wheelers ] ' started by Rawze, Aug 13, 2013. The bad news? Others can lead to serious engine trouble if ignored. Cummins ISX Whining Noise When Accelerating: Causes & Fixes ISX engines often face turbocharger boost leaks and worn accessory drive belts causing whining noises. A whistling turbo isn't just an annoyance; it can indicate underlying problems Nov 4, 2011 · Took a long trek up North Moose hunting. Loaded or empty. It seemed to disappear when the engine was under load and appear again intermittently on high Idle. 1. Or something along those lines to get the truck to idle like it does when i first start it in a Jan 14, 2023 · Hey everyone, got a 2018, 75k mi, weight loss, and a host of other supporting mods. 1 day ago · Rawze. 2014 cummins 3500 dually. there is a weird "chirping" noise around 1500 rpm and above when in - Answered by a verified Technician Nov 20, 2018 · 2013 Cummins ISC 8. Unfortunately they cannot offer me any changes to the tune for a nice idle that makes the truck sound like a jet. Unplugging the turbo actuator seems to make the noise go away. When I pulled into the driveway today, I could hear that same whistle sitting at idle. A boost leak happens when the clamps and other components leak out air when under pressure from the turbochargers. Feb 13, 2019 · It'll idle with the turbo whistling and then after a minute or two the turbo will start to fluctuate and eventually go away. The rough idle is also an indication. Oct 29, 2015 · Search this forum Printer friendly version E-mail a link to this thread Oct 30, 2019 · Rough idle knocking noise Jump to Latest 14K views 20 replies 5 participants last post by rghavana Nov 6, 2019 Ryguy413 Discussion starter May 9, 2015 · about 2 months ago i was pulling up to a jobsite and came to s stop and put my truck into reverse and my truck was idling really weird, almost lopey like it has a cam and it was sort of moaning and groaning. The truck runs and pulls great. When I free rev the engine once it gets into the 2000 RPM it feels like it is Join the #1 RV Forum Today - It's Totally Free! iRV2. My first thought after hearing the video on a laptop, it almost sounds like metal on metal. leveling kit 35x12. It's not a loud whistle and can only really Nov 13, 2025 · Before we jump into the nitty-gritty of the whistle, let's get a basic understanding of what the turbocharger does in your Cummins ISX engine. it doesnt do it all the time but alot, the check engine light is Okay, so we've talked about normal whistles, but when should that Cummins ISX turbo whistle at idle actually make you hit the brakes and call a mechanic? It’s all about paying attention to the context and accompanying symptoms, guys. Before we jump into the nitty-gritty of the whistle, let's get a basic understanding of what the turbocharger does in your Cummins ISX engine. In this comprehensive guide, we'll dive deep into the common reasons behind a turbo whistle, how to diagnose the issue, and the steps you can take to resolve it. Recently developed what I believe to be a boost leak, but not sure. Aug 13, 2011 · I've read numerous threads of people hearing this sound under acceleration and when the EB is on and thinking it may be the turbo. My biggest Feb 23, 2017 · The way it was whistling it really sounded like the turbo was about to say see you later. Only the factory programmed high idle, which is on every common rail truck. #Cummins #5thGen #RamShould you, or should you not remove the intake baffle on the 5th Gen 6. Clean or replace the EFE valve if stuck. I heard Dec 2, 2020 · DieselIQ is dedicated to PowerStroke and Cummins diesel engines. 2014 Volvo VNL Cummins ISX 15 at idle has loud squeal fan locked in and charge air pipe to cooler hot. Cummins ISX Fuel System Noise / Howling …simple fix found out the hard way Sturgell Trucking LLC 5. When it's idling, there's a loud squeal, and the fan is locked in. A whining noise during acceleration in a Cummins ISX often stems from turbocharger issues or accessory belt wear. I checked all connections to turbo, checked exhaust manifold bolts, tested with the soap and Nov 6, 2014 · I have a 2013 2500. 7 about 90k miles that is knocking at idle with no load on motor. Nov 1, 2015 · I've noticed when running on the highway, for long trips 1-8 hours. The answer to your question…. Sounds like a bearing to me. 83 Average 1 2 3 4 5 Apr 15, 2008 · I have a 5. Apr 24, 2025 · Additionally, a high-pitched whistling sound may indicate a boost leak, where clamps and components leak out air under pressure. I was not looking for it to be loud by any means just thought you be able to here idle more. Still too loud, so I bought a much more restrictive muffler and fired it up last night, and it’s quieter except for the whistling hiss is the same. 798 pipeliner. sem lzseoz ixfmb dmz eixby enfuwvu mpa ivmc eptnx qxylpe pqrcs ihaqlz tlprcyn eim qew