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08-24-2008, 02:38 AM
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#1 (permalink) |
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Walking
Join Date: Aug 2008
Posts: 4
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Torque converter shudder? 1996 0lds 88
96 Olds 88 3800 4spd automatic- Had a shudder when climbing hills in overdrive. Had tranny flushed and shudder disappeared. Now 1 year later shudder returns and is obviously torque converter failing to complete or stay in lock-up. Driving straight and level lockup engages, rpm drops and after a while it shudders and drops out of lock up. Sometimes stays in lockup properly other times barely tries to lockup. Is my torque converter shot or could it be a sensor, control, plugged filter or something else less serious than a replacement? Shifting gears 1-overdrive is acceptable and unchanged. No leaks, slow shifting or other signs of problems. Tranny oil is clean and no burnt smell. Getting occasional check engine light. Insight and help much appreciated.
Last edited by gerskan : 08-24-2008 at 02:53 AM. |
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08-24-2008, 05:55 PM
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#2 (permalink) |
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GMI Fixed Ops Contributor
Join Date: Sep 2004
Posts: 8,947
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Re: Torque converter shudder? 1996 0lds 88
I think a 96 is too old for the PCM reprogram, whichfixes one shudder issue...
Otherwise I'd guess the pressure control solenoid inside the transmission might be of issue... Sometimes a flush with new fluid, which is liekly more viscous aided the issue temporarily... I had the same issue with a 98 Park Avenue...
__________________
certified GM Dealer Parts Manager since 1994 GM Dealer Parts employee since 1987 AMC-Jeep-Renault Dealer Parts employee 1987-90 holder of many GM accredations, too numerous to list and not giving a damn! |
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08-25-2008, 01:23 AM
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#3 (permalink) |
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Walking
Join Date: Aug 2008
Posts: 4
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Re: Torque converter shudder? 1996 0lds 88
Thanks, that sounds reasonable. Next question: How accessible is the solenoid valve and how to determine if faulty? Is is straight electrical/electronic controlled or is there a vacuum sensor involved too?
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08-25-2008, 02:45 PM
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#4 (permalink) | |
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GMI Fixed Ops Contributor
Join Date: Sep 2004
Posts: 8,947
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Re: Torque converter shudder? 1996 0lds 88
Quote:
__________________
certified GM Dealer Parts Manager since 1994 GM Dealer Parts employee since 1987 AMC-Jeep-Renault Dealer Parts employee 1987-90 holder of many GM accredations, too numerous to list and not giving a damn! |
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08-25-2008, 05:42 PM
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#6 (permalink) |
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3.9 Liter V6
Join Date: Dec 2005
Posts: 925
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Re: Torque converter shudder? 1996 0lds 88
Just put some friction modifier and forget about it.
I don't know if it's available at a GM dealer, but it's at the Ford dealerships and any transmission shop. No, it won't hurt anything either.
__________________
Our fleet: '07 Avalanche LT2 4WD '99 Camaro Z28 Cammed, bolt-ons and gears-Sold '87 Grand National-Sold '95 Civic DX Daily Driver '81 K20 Chevrolet truck 4x4 and an SM465 Member of The: I will buy whatever vehicle best suits my needs, despite country of origin club. I REALLY like the new Malibu. |
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08-25-2008, 05:51 PM
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#7 (permalink) | |
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GMI Fixed Ops Contributor
Join Date: Sep 2004
Posts: 8,947
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Re: Torque converter shudder? 1996 0lds 88
Quote:
 Trust me...I tried that already! 
__________________
certified GM Dealer Parts Manager since 1994 GM Dealer Parts employee since 1987 AMC-Jeep-Renault Dealer Parts employee 1987-90 holder of many GM accredations, too numerous to list and not giving a damn! |
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08-25-2008, 06:24 PM
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#8 (permalink) | |
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3.9 Liter V6
Join Date: Dec 2005
Posts: 925
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Re: Torque converter shudder? 1996 0lds 88
Quote:
You gotta get the real stinky stuff. The stuff that makes you dry heave. How ya been?
__________________
Our fleet: '07 Avalanche LT2 4WD '99 Camaro Z28 Cammed, bolt-ons and gears-Sold '87 Grand National-Sold '95 Civic DX Daily Driver '81 K20 Chevrolet truck 4x4 and an SM465 Member of The: I will buy whatever vehicle best suits my needs, despite country of origin club. I REALLY like the new Malibu. |
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08-25-2008, 07:14 PM
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#9 (permalink) |
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Walking
Join Date: Aug 2008
Posts: 4
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Re: Torque converter shudder? 1996 0lds 88
Thanks for the tips. A local tranny shop said 8 hours plus parts to replace the solenoid. Hmmm. They also said the had an extreme additive that sometimes will work. $900 labor or try the additive....... okay try the sticky stuff. Thanks for your help.
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