1990 4wd vibration
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Joined: Sep 1999
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1990 4wd vibration
I have a 1990 1/2 ton with the e4od automatic transmission. For the past 3 years, I have experienced a vibration both in-town (35 mph) and on the highway (65mph ) that feels like driving over a washboard road. Usually it is when I am driving up a long hill, but not always. I've rebuilt the rearend and replaced the U-joints. The local Ford dealer diagnosed a slipping torque converter, but wouldn't guarantee that a new $725 torque converter would fix the problem. They also mentioned that most slipping torque converters are worse than the one in my truck. Has anyone else experienced this problem?
Thanks in advance.
Thanks in advance.
Posting Guru
Joined: Sep 1999
Posts: 2,297
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From: Indiana
1990 4wd vibration
does your truck have a C-V joint on the rear driveshaft, if so I would be looking at it, I had a 90 big Bronco it vibrated badly, the faster you went the worse it was, the u-joints were fine ,the C-V joint was shot, had it repaired at a driveshaft shop , & it was fine from there on.
Mountain Pass
Joined: May 2004
Posts: 102
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my 92 6 cyl AT does exactly the same, feels like driving over a washboard when it happens. Did you ever get this fixed? Was it converter that was causing it? I don't think I'd spend $725 on this truck to fix it.
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