7.3

1997 FORD F-250
200,000 MILES • V8 • 4WD • MANUAL
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MATT2727
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  • 3 POSTS
i have a 1997 ford f250 7.3 diesel 5sp trans, when the truck is running and not moving it makes a thumpin noise i believe in the transmission. one second it will make the noise then it wont, then it will again. when i push the clutch it doesnt make the thumping noise anymore, when you release the clutch the thumping noise continues. do any suggestions what can be wrong with it
Jan 10, 2011 at 6:28 AM
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CUP1981
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Id it is determined by clutch pressure than we know it is a transmission or clutch issue. If it is not doing it when the truck is in gear and moving, as you stated, I would say it sounds more internal transmission related than anything. There may be some sear alignment issues inside the transmission causing the thumping sound. This seems the most likely case, as the noise comes and goes. At 200,000 miles it wouldn't surprise me if the truck needed a maintenance overhaul on the transmission. I would get it checked out ASAP before more damage is caused.
Mar 13, 2011 at 1:35 AM