trans shutters under acceleration

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, Olds 98 91-96, Buick Lesabres and Park Avenue 91-96. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.
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44070dart
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Year and Trim: 1999 ssei

trans shutters under acceleration

Post by 44070dart »

if I accelerate from a dead stop any more than normal the car shutters from the drive train ..I was told it was probably the Pressure Control Solenoid that was the problem... and to try Seafoam trans conditioner first and then a filter and trans fluid change would be necessary and this MAY solve the problem ..its a 99 with 68000 miles ..any one use this stuff I don't want to make it worse than it is
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nos4blood70
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Re: trans shutters under acceleration

Post by nos4blood70 »

I don't know about seafoam, but I had similar issues in my car which stopped after a bottle of Lucas Stopslip.

I'm guessing the car has never seen a trans fluid change at 68,000 miles. If I were you, I'd do the pan drop and filter change, and put a whole quart of Stopslip in the new fluid. Make sure you do not have the trans flushed! Just a regular pan drop.
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95se
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Re: trans shutters under acceleration

Post by 95se »

Shuttering is usually from clutch packs getting thin but stop slip will fix it for a while. When i replaced my diff my clutch packs for 1st were getting thin and should have been gone by mid summer but mine are still holding up fine.
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44070dart
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Joined: Mon Jun 23, 2014 9:15 pm
Year and Trim: 1999 ssei

Re: trans shutters under acceleration

Post by 44070dart »

thanks I'll drop the pan and try the Lucas this weekend
Jrs3800
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Re: trans shutters under acceleration

Post by Jrs3800 »

Sounds a lot like the PCS( Pressure Control Solenoid ) is going bad...

Like stated I would change the fluid and filter first... If it still does it you may need a good diagnostic from a trustworthy shop..
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