Over drive jerking - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 06-21-2004, 08:52 AM   #11
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Default Re: Over drive jerking

Quote:
Originally Posted by Muslimsteel
On my sisters 1992 Buick Regal Custom (has a Series 1 3800 but different tranny than my 94 though right?) she first noticed this like jerking and thought it was going to die or something but anyways i took it out to figure out what could be causing it...after a few drives i've found that when the car gets around 50-55mph and goes into overdrive it starts kinda jerking back, feels like a huge quick gust of wind hits the front, the jerking is really spontaneous...ive checked all the fluids and air filter those are all good...when it was doing that once i switched it to regular drive and it stopped. Also my dad talked to a mechanic about it and he said it might be the overdrive lock? (not sure what that is) and that you can cut a certain wire and it will stop. im not sure if that is the best solution so i thought id see what you guys think. i definitely know its something to do with the OverDrive just not sure what. the engine has 106k on it btw if that is any help. Thanks!
I had this EXACT same issue on a 92 Cutlass (3300 engine). I let it go for a long time and finally one day I simply changed the fuel filter and the car never ran better!! I'd be willing to bet that'* your problem.

I would change the plugs, wires and fuel filter.
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Old 06-25-2004, 07:33 PM   #12
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had the same thing on my 97 Bonne 113K miles. I would have bet that it was tranny-related. I replaced the plugs and put in MSD coils and 8.5mm wires and it solved the problem. in fact, i swear car runs better now than when new. MSD is the way to go!
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Old 06-25-2004, 07:44 PM   #13
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well i didnt change out the plugs or wires...maybe eventually but right now my dad talked to a mechanic and he said that it was the overdrive lock up (when the overdrive goes into lock up it puts it in the most fuel effecient mode) he told us that we could unplug this wire that connects to the tranny (the wire comes out facing towards the headlights of the car) and that would stop it from going into od lockup. so we did that and it is fine now...the service engine light comes on once in a while but it doesnt jerk around anymore. any thoughts? could this be bad....i didnt try changing out the wires and plugs because we pulled out a plug and it looked fine and the wires had been changed. (also my dad was dead set on it being something to do with the tranny... oh well
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Old 06-25-2004, 07:57 PM   #14
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Well, besides lower fuel milage, I don't think you'll have much of a problem. You might want to scan for that code that'* being generated to make sure it is nothing serious. It might be pointed to the Torque Converter Clutch which you just disengaged. Also, I would treat the Trans to some new oil and a filter.
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Old 06-25-2004, 07:58 PM   #15
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that'* what they told me also. but i think the lockup going bad might throw a code, not sure..anyway i think plugs, coils and wires is a fairly cheap thing to try first..can't hurt.
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Old 06-26-2004, 01:20 PM   #16
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Yes, I would try to track down what looks like a simple ignition problem.
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Old 06-26-2004, 08:09 PM   #17
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ok this week ill swap out the plugs and wires that shouldnt be too hard and plug that back in to see if it does it thanks guys!
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Old 07-02-2004, 10:08 PM   #18
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ok i changed out the wires and plugs and the car is perfect now the engine runs great i also plugged the tranny lockup control wire back in thanks a bunch guys!! i should have listened to u from the beginning but i guess its a learning experience heheh thanks again!
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Old 07-03-2004, 02:29 AM   #19
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also i wanted to add that the plugs i took out were bosch another example of them not being good in the 3800s and i also found that the wires for #3 and #6 were switched somehow but i put them in the proper places. thanks again!
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Old 07-03-2004, 12:19 PM   #20
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