1993 Cadillac Deville Hey

Tiny
MIKE2009
  • MEMBER
  • 1993 CADILLAC DEVILLE
  • V8
  • FWD
  • AUTOMATIC
  • 102,600 MILES
Hi how are you doing I have a 1993 Cadillac Deville 4.9 and about for about four months now since I had my transmission rebuilt at 43mph as soon as the transmission shifts it jerks then hesitates a lil bit then smooths out this is really bothering me everything is new wires, plugs fuel pressure is good new egr new fuel filter, new tps everythng and ammco keeps telling me it's not a trans problem and I know it is.
Thursday, December 10th, 2009 AT 2:22 PM

3 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
At that shift point the engine and tranny are in 1 to 1 engine ration, whaen was your last new set of plugs and wires? 02 sensors? And MAF sensor, all can cause this. Even a small vacuum leak can.
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Thursday, December 10th, 2009 AT 2:45 PM
Tiny
MIKE2009
  • MEMBER
  • 20 POSTS
Hey thanks for responding so quickly I just picked up the car out of the aamco today it got new plugs and wires yesterday new egr about 3 months ago ne o2 sensor 3 months ago and m gonna put al new vacuum lines on the car soon the car don't have a maf sensor it has a map sensor and I haven't changed that yet.
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Thursday, December 10th, 2009 AT 3:35 PM
Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
Did they put in a new torque converter. You might try disconnecting the electrical connection at the trans and driving it. This would prevent the torque converter clutch from applying, see if the problem goes away.
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Thursday, December 10th, 2009 AT 10:12 PM

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