Noise
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Laughing Gas
Joined: Aug 2003
Posts: 836
Likes: 9
Noise
I have a 1999 F250 7.3 LDiesel 2WD with Automatic trans... 63,000 miles. In the past week I have started hearing a noise that I would describe as a metal on metal or growl. Sounds like its coming from the center of the truck but hard to tell. The noise is most noticeable between 30 and 45 Mph. And seems to be loudest when you give it just a little gas and put it under a slight load. But you can still hear it when coasting. When you come to a stop it goes away.
I have had two mechanics look at it and test drive it. The first guy really could not say but was pretty sure it was not the Turbo...He wants to put it on the rack but I had to make an appointment (Jan 11 2008) Ha...The second guy was thinking it could be coming from the Turbo but was not sure but they dont do Turbos?
I was thinking if its the turbo why would it stop so suddenly when the truck comes to a stop. I know its hard to diagnose this kind of stuff but was just wondering if anyone has had any similar experience?
Doug
I have had two mechanics look at it and test drive it. The first guy really could not say but was pretty sure it was not the Turbo...He wants to put it on the rack but I had to make an appointment (Jan 11 2008) Ha...The second guy was thinking it could be coming from the Turbo but was not sure but they dont do Turbos?
I was thinking if its the turbo why would it stop so suddenly when the truck comes to a stop. I know its hard to diagnose this kind of stuff but was just wondering if anyone has had any similar experience?
Doug
Cargo Master
Joined: Jan 2001
Posts: 2,726
Likes: 5
From: Slatington, PA
If it was the turbo, it would be making noise constantly. What body style do you have? The longer trucks have a carrier bearing due to the two piece drive shaft. That could be the problem.
Cargo Master
Joined: Jan 2001
Posts: 2,726
Likes: 5
From: Slatington, PA
You could remove the two bolts holding it up and lower the drive shaft a little. Then rotate it around and see if it feels smooth or harsh. Careful though, if the slip joint is greased properly, that driveshaft will drop down on you. Mine wasnt the first time and I could hang on it and it wouldnt slide.
Post Fiend
Joined: Feb 2007
Posts: 14,541
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From: Dallas-Ft. Worth
Well.... Not necessarily. My buddy's CTD had a intermittent noise that ended up being the turbo. Check the side-to-side & in & out play by pulling the intake tube to the turbo and try moving it up & down & in & out. A very slight movement is okay, but not much. And of course, it shouldn't TOUCH the side if you move it.
Posting Guru
Joined: Feb 2007
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From: Bradenton FL
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Cargo Master
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Post Fiend
Joined: Mar 2007
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From: Texas
Can you duplicate the noise in park or neutral? Try revving the engine and holding it at different RPM's. That will help eliminate some parts. You might also try shifting into neutral while rolling at a speed that makes noise to see if the noise continues.
Just trying to help narrow it down some.
Just trying to help narrow it down some.
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Laughing Gas
Joined: Aug 2003
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Likes: 9
We tried raising the rpm's and listening to the various engine parts with a stethoscope but could not specifically identifiy a problem. We thought we could hear something but nothing jumped out. Nothing like what we hear when going down the road between 30 and 45 mph...
Doug
Doug
Posting Guru
Joined: Oct 2007
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From: Farmington, Minnesota
Originally Posted by Benny2002
Does that year have the torque converter that goes NOISY after a while???
Posting Guru
Joined: Oct 2007
Posts: 2,225
Likes: 1
From: Farmington, Minnesota
Originally Posted by DLeppik
We tried raising the rpm's and listening to the various engine parts with a stethoscope but could not specifically identifiy a problem. We thought we could hear something but nothing jumped out. Nothing like what we hear when going down the road between 30 and 45 mph...
Doug
Doug