Ugh... More problems - 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 04-01-2010, 11:27 PM   #1
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So now that the flour incident is behind me, I have a new issue to bring up- the fact that occasionally, but most often after a somewhat hard brake, when I accelerate it will shift very roughly(is that a word?). But after I turn the car off and then on again, it will be fine. Does anyone have any idea what it could be?
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Old 04-01-2010, 11:31 PM   #2
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My first thought is a bad motor mount or trans mount. Inspect them all. Have a friend help you. Open the hood and stand to the side. have your friend start the engine, push the brake, and then put it in drive. Watch the engine. Then shift to reverse, and watch the engine. It will move a bit, but shouldn't move a lot.
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Old 04-02-2010, 10:51 AM   #3
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Just did that, and it moves a lot. But, I don't exactly know the usual moves it should go through, so I'm going to take a video and post it so you can see.
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Old 04-02-2010, 10:56 AM   #4
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Please remind us of your year and model. Then please edit your personal settings and add that to your signature.

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Old 04-02-2010, 11:26 AM   #5
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Sorry, I thought it was in there, last time I checked. Anyway its a 99SE
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Old 04-02-2010, 10:19 PM   #6
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Ok I have a question- when you say move, do you mean like wiggle, but stay in the same position? Because mine moves and shifts positions. Like it moves a few inches it seems
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Old 04-02-2010, 10:28 PM   #7
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The engine will move a bit because the mounts move inside a rubber bushing. If you have metal on metal, that'* bad. If the mount is not firmly bolted to the engine, transmission, or subframe, then you have a problem there. If possible, take a video of the movement and post it.
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Old 04-02-2010, 11:21 PM   #8
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I tried earlier, but had camera issues. I'll do it again tomorrow with a different camera
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Old 05-19-2010, 10:49 AM   #9
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Ok I remembered I had this post here, and now have more info. My Mounts are fine, I dropped by my mechanic and he took a look. He suggested it may just be in need on a transmission service, becuase it has been a while. So my question is, could the strange shifting issues be caused by a simple need for a servicing?
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