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Automatic Trans Problem

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Old Jan 11, 2004 | 02:33 PM
  #1  
gearshift101's Avatar
gearshift101
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From: new jersey
Automatic Trans Problem

Hello to all !


I just put a c6 auto/trans in my 86 f150 (351w) 2wd truck w/no od , all oil levels are correct.

When I start the truck and warm it up, I put it in drive step on the throttle and it feels like it is rumbling, and it dont seem like it is shifting correctly into 2nd. But! If I slowly accelerate it seems to shift fine with out rumbling. and once i get past 20 - 25mph its smooth sailing. I thought maybe the trans was sitting around in the j/yard that maybe driving it would correct the problem, so i drove on the hwy for about 25mi, at about 65-75mph and still the same thing, when starting off it feels rumbly.

I was wondering if it could be the torque converter, or maybe the u-joints not installed correctly ?.

Any help in this area would be great!


Thanks in Advance...Al
 
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Old Jan 11, 2004 | 09:07 PM
  #2  
99f350sd's Avatar
99f350sd
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From: Lyndonville, Vermont
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U joints will do that at low speed.
 
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