Ford 6.7L Power Stroke Diesel :: Loud Squealing Noise / Exhaust TC Blew Or Fell Out?
Jun 12, 2015
On my way home from picking up or new Voltage 5er, I could hear a loud squealing noise when we pulled up to the house. After crawling around the under side of the truck I found the last exhaust thermal couple had either blew out or just fell out.
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heard a loud squealing noise and now no boost. 2011 with 90k miles
whats my options and what would it cost.
1. replace with factory turbo
2. replace with upgraded turbo and tune?
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My squeal is only present at my tail pipe at rear of truck its a 2007 f350 straight pipe . 6.0 engine. 300'000 miles . just bought this truck . believe turbo has been replaced but not sure as to when. This noise is very loud ear splitting at an idle. Builds boost just fine. No noise at turbo area other than the normal slight whine.
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Just noticed a loud squealing sound coming from the engine area before I start the truck, but with the key in the on position. I'll try to get a video the next time it happens. I assume it's something starting/warming up, but it's louder than anything I've ever noticed. It lasts probably 20 seconds.
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no change, changed stand pipe and dummy plug on driver side, no change and guess what? Now I am stuck on the side of the road waiting to give my last $100 to a tow truck! Engine is hydrolocked, fuel pressure is low, starts off at around 20 and works up to 54 with key on engine off, and that is as much as I know from the side of the road with out my AE. Blew white smoke also. Smelled of unburnt diesel. I think it's linked to my rough running issue. Maybe a bad injector? But every time I did the click test they all passed. Idk, I'm gonna remove the glow plugs and see which hole is loaded and with what. . .
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I noticed a rough idle after driving an hour with a 6000 lb trailer and stopped at an offramp. Had no performance issues to that point in an hour drive. Then I noticed a good amount of white smoke coming out of the exhaust. The idle felt just like when I had a contribution/balance code on #5 a year ago, and a new injector fixed that. Before long (10-20 minutes later) the idle got real loud, like a big knock/loud tick every revolution.
I had a bunch of stored codes, so I reset them and later found a P0281 - Cylinder 7 contribution/Balance and P0404 - EGR control circuit range/performance were the 2 that came back. I drove it 2 more hours to get home. It ran well under load, but coasting or stopped gave the loud knock, and stopped and idling was a rough, inconsistent idle. It even stalled on me 3 times when braking for a red light (auto trans). There was a lot of white smoke all the time, plus a little dark smoke on acceleration.
What would you recommend for troubleshooting steps? I could put a new injector in #7 and clean the EGR valve, but want to have a good idea that will fix it first. Is there a good chance I have a messed up piston in #7 now?
Codes I cleared:
P0148 Fuel delivery error
P0234 turbo overboost (i know i need to pull and clean the turbo anyway, unrelated to today's issue)
P0281 Cylinder 7 contribution/Balance
P0404 EGR control circuit range/performance
P0670 Glow plug (I had the module unplugged a while ago)
P0683 Glow plug (I had the module unplugged a while ago)
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Well, I last summer my fuel filter/ pump started squealing, and making vibrating noise, replaced the fuel filter changed the noise slightly, some times it would go away, sometimes the line going to the filter under the hood would vibrate, couple weeks ago truck warning light came on- "low fuel pressure warning" came on, hum... went out, came on a couple days later, then finally put me into limp mode, luckly only 1/2 mile from home... checked filter on frame/ tightness, it was tight, the pump on the filter housing was very noisey still, well, I figured 200 dollars cheaper than taking to ford....
I waited and pump arrived 3 days later, replaced it and low pressure warning still on, but pump was very quiet, and when I restarted low pressure warning and reduced power came on in driveway, hum.... I thought code was still in computer, I disconnected battery and turned headlights on to try and kill the code, started it and now the engine light came on, nothing else, and truck ran fine....hum.... went to autozone, and they pulled the code, low fuel rail pressure, p0087, guy said to drive and code should go off, truck runs fine. Drove truck a couple days and engine light went off, Truck runs great.......All is good.
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Just a quick question, my serpentine belt fell off while driving on the freeway today and wondering what are the possible causes for this too happen? First things that came too mind were tensioner or worn out belt. Hard to believe the belt would be worn out though as it only has 65k miles.
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I would like to know if i am the only one that had that problem... a few weeks ago, I had to stop and get the truck towed to the dealership and they told me that my engine was shot. Then they told me it was a glow plug that fell inside the cylinder... didn't know it was possible but any way it was under warranty.
Last Monday they asked me to bring all my service receipt and that ford is asking them to take the engine apart and study it before they would ship a new engine... Are the trying to get away from paying it under warranty? The truck is 2011 with 80000 km (50000 miles).
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I have a 2011 that does not currently have the complete factory exhaust system on it and no muffler. With the nice weather I have been driving around with the windows down and hear a noise out of the exhaust that sounds like tires spinning on wet pavement when I let off the throttle or at some shifts of the transmission. Boost seems normal, and don't hear any noise while under load. I think it is just the VGT closing and making the noise. With deleted sys heard this noise in exhaust?
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I have a code for #6 low contribution and a thumping noise out the exhaust. When I turn number 6 injector off the popping/ thumping goes away. Truck is straight piped and deleted. It started doing this after getting on it hard to get on the high way. Sounds like beating an empty pop bottle on something
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The code was P040 which said is for the EGR system so I removed the EGR valve. It was completely plugged in the top section. I cleaned it out and cleaned out the ends of the EGR coolers then vacuumed the port out and reinstalled the valve and removed battery cables for 2 minutes to remove old check engine light codes . I drove it for 50 miles and it runs fine now and the check engine light did not come on. It still has a loud ticking noise behind the glove box which I read can be the blend door relay so I will try to pinpoint exactly what is making the noise as soon as I figure out how to get the glove box door off.
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How do you diagnose a bad fan clutch? When driving in tow/haul mode I get a noise like a jet engine. It starts going down grade or upgrade and does not stop after leveling out. I have switched off tow/haul and it is still there. Over on the Diesel Stop site I found a couple of guys who have had the same problem. Concern is everything I have read there are no codes thrown. Have not taken to my local Ford Dealer to see what they say.
Driving a 2011 F-250, August 2010 build date with 76,500 miles. Problem started about 6 weeks ago when pulling an 8000 lb travel trailer in the White Mountains of NH.
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I just got a 5 inch turbo back Magnaflow stainless exhaust system installed on my 2007 F 450. The downpipe rests directly on the firewall and causes a horrible vibration and noise at times. I have been on the phone talking directly with Magnaflow trying to resolve this issue
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For a while now, I have been hearing a very high pitch whistle noise from the turbo/exhaust area. Everybody told me it was an exhaust leak, but I never could pin point the leak. While I was under the truck last weekend I found the flex joint on the passenger side up pipe was broken a leaking.
I ordered a Dorman replacement pipe that comes with a new gasket and hardware.
I will be the first to admit, I am not a fan of Dorman parts... BUT, this pipe is really nice. It looks identical to the pipe being sold on Dieselsite.com, it doesn't have the scoop inside to direct exhaust gas to the EGR cooler and it comes with all the mounting hardware.
[URL] ....
Once I got the turbo down pipe out of the way and soaked the bolts with penetrating oil, I had the broken up pipe off in 30 minutes.
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I have a 2003 F250 6.0l 4x4 with 230k miles. All of a sudden it seems that the fan is very very loud and there may be a very little lost of power. Also i just replaced the fan clutch not sure if that may have anything to do with it. What could it be. I need to get this fixed this week...
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AC compressor makes a loud growling noise and lugs the engine briefly when engaged at idle and the truck has been sitting for weeks. After that initial grind, it works perfectly and makes no harsh noises. Can I replace the compressor bearing or should I swap out the entire compressor?
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Back again.. I just replaced the HPOP and IPR valve on my truck a few weeks ago. While the turbo was out I cleaned it and applied a small amount of anti seize on the unison ring. When installing the turbo I had moved the y-pipe a little to get the turbo in place. About a week after it was running again I started to get a squealing noise under acceleration. The noise isn't a whistle like the turbo but an actual squeal. Its a little bit louder than the turbo whistle. If I am in park and rev the engine it doesn't happen. It only happens when I accelerate and seems to be when there is boost. If I let off the gas pedal the noise stops. I don't have an issue with making boost. I did replace the turbo boot when it was apart a few weeks ago so I don't think that is the problem I checked the y-pipe clamp and down-pipe clamp and both are fine. I replaced the serpentine belt this past weekend and checked all pulleys, they were all very good with no play. Another thing, the pitch of the noise seems to change with rpm's too. What could be causing this type of noise?
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Just over 7000 miles all of a sudden I got this loud grinding noise in the rear end like a brake locked up. Pulled into a parking lot. Don't think it's brakes. Put the truck in reverse it got even louder for a second then it quieted down after that. Naturally this happened on a Saturday.
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Fixing issues with my truck. I just ordered some latex surgical tubing and am getting ready to fix the rattling noise in my rear door by using the Epic's Door Seal Mod. Hopefully this will take care of that issue.
One more annoying noise though. Has there been any fixes to the buzzing window noise that is coming from the front passenger side. If the wind is blowing right and I'm running over 50mph, at times get a loud buzzing noise and really bugs me. Something is vibrating and at first i thought i had a speaker going out but found out that wasn't it.
I've called my dealer and informed them of this and asked if they've heard of this but of course they haven't and this usually means the won't do anything besides look for recalls or something. I have the noise recorded and scheduled an appointment with my Ford Dealer but again, they won't do anything most likely.
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I've topped up the DEF and the warning is still showing that I'll have reduced engine power within 45kms.
Its weird, just yesterday it showed 550kms to empty so I added one full container, all day it kept showing less and less kms' til empty. Warning lights and bells etc.
This evening topped it completely and still shows. Is there a way to reset it without having to stop at the service dept.
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