Suddenly Loud
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Suddenly Loud
I am new to owning a diesel, 1996 F250, it was my grandfather's truck. I was driving in traffic and all the sudden the engine got real loud. Luckily I was 2 miles from home so I could get it there.
No warning lights came on, and it seemed to be running fine though I was being as gentle as possible due to the noise level. My guess is something in the exhaust system came loose but I was hoping someone might have some suggestions. Any help would be appreciated
No warning lights came on, and it seemed to be running fine though I was being as gentle as possible due to the noise level. My guess is something in the exhaust system came loose but I was hoping someone might have some suggestions. Any help would be appreciated
Logistics Pro
Joined: Jul 2001
Posts: 4,137
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From: Marble Falls, Texas
Is it like knocking loud, or vroom vroom loud. 
I would crawl under the truck and give the exhaust a good once over. Look under the hood at the turbo and make sure the down pipe didn't come loose. By the way, welcome to FTE. 
Let us know what you find.
RubberDuck
I would crawl under the truck and give the exhaust a good once over. Look under the hood at the turbo and make sure the down pipe didn't come loose. By the way, welcome to FTE. Let us know what you find.RubberDuck
Post Fiend
Joined: Jul 2005
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From: 21791
was it like a loud howling noise (such as a fan spinning 2000-2500 RPM behind the radiator) (haha)*
or was it more of a louder exhaust tone? maybe the chrome muffler bearing that holds the downpipe to the radiator came off the oil pan...
or was it more of a louder exhaust tone? maybe the chrome muffler bearing that holds the downpipe to the radiator came off the oil pan...
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Thanks for the info about the turbo, Ill check the down pipe. As far as noise, I am pretty used to the diesel engine before this happened and it still seemed to run normal, though I was focusing on gauges and trying to keep the rpms on the lower side to be as quiet as possible (though it didnt matter). Best description I can come up with is it went from a yamaha to a harley (volume wise) in 15 seconds.
Post Fiend
Joined: Jul 2005
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From: 21791
were you driving slowly in city traffic where the engine could possibly run hot enough where the fan had to kick in? my fan runs on my tuck when i start it up and drive it, it disengages at like 1750 rpm when accelerating...
Lead Driver
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From: Huntington Indiana
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Thanks for all the info, I had my first chance to look around this morning and found the problem. My belt tensioner seems to have broken and the unit was pulled forward so the fan was hitting the pulley. Gonna have it towed to the dealer to fix it, I cant seem to budge the unit.
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