Transmission Cavitation?
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From: South of you
Transmission Cavitation?
In the past month I have felt a progressively growing surging type vibration at idle on my 4R100. It is sort of the same kind of drone you get with open exhaust...though not as loud. At certain speeds it can be felt moderately. Spoke to a friend that is relatively smart about these things and he said he thinks the pump is surging because the tranny fluid is foaming. He had a similar problem with an E4OD. I will try anything to get this anoying vibration to go away. He said to go ahead and drain tranny, add a new filter and new fluid. The truck has only 22,000 miles on it and I aould like to diagnose it instead of letting it sit at the dealer for however many days while they try to figure it out. Any ideas on this theory?
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Elder User
Joined: Aug 2002
Posts: 656
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From: South of you
Transmission Cavitation?
Originally posted by 79CEEJAY
In the past month I have felt a progressively growing surging type vibration at idle on my 4R100. It is sort of the same kind of drone you get with open exhaust...though not as loud. At certain speeds it can be felt moderately. Spoke to a friend that is relatively smart about these things and he said he thinks the pump is surging because the tranny fluid is foaming. He had a similar problem with an E4OD. I will try anything to get this anoying vibration to go away. He said to go ahead and drain tranny, add a new filter and new fluid. The truck has only 22,000 miles on it and I aould like to diagnose it instead of letting it sit at the dealer for however many days while they try to figure it out. Any ideas on this theory?
In the past month I have felt a progressively growing surging type vibration at idle on my 4R100. It is sort of the same kind of drone you get with open exhaust...though not as loud. At certain speeds it can be felt moderately. Spoke to a friend that is relatively smart about these things and he said he thinks the pump is surging because the tranny fluid is foaming. He had a similar problem with an E4OD. I will try anything to get this anoying vibration to go away. He said to go ahead and drain tranny, add a new filter and new fluid. The truck has only 22,000 miles on it and I aould like to diagnose it instead of letting it sit at the dealer for however many days while they try to figure it out. Any ideas on this theory?
I am going nuts trying to track down this vibration. Is there any chance it is "cavitation" in the tranny caused by fluid foaming?????? ANYBODY
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