90 L98 Auto Trans Shudder

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Sep 19, 2004 | 10:44 PM

90Indy

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Pro

Joined: Jan 2004

Posts: 503

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From: Forney Texas

90 L98 Auto Trans Shudder

I have a 90 Auto Vert with 45,000 miles and lately I have been experiencing a shutter when the car is in overdrive and the throttle is lightly depressed. If the pedal is pushed to the point of downshifting, no shutter is experienced. No other problems have been encountered.

I suspect this has something to do with the torque converter locking up and not releasing but I don't know how to troubleshoot this problem.

Any hints at what to do to narrow down the possibilities would be much appreciated.

90Indy

Sep 20, 2004 | 07:02 AM

itsonlyairandfuel

Melting Slicks

Joined: Jun 2001

Posts: 2,266

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If your spark plugs or wires are failing it will show up in a part throttle high load situation,in top gear converter locked. If you ohm out your ignition wires it will tell you quickly. Just a thought sometimes it isn't the transmission problem, but not being there I might be wrong. Good luck and let us know.

Ron B.

Sep 20, 2004 | 04:16 PM

jvette44

Instructor

Joined: Jul 2004

Posts: 203

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From: Kelowna B.C.

I had the exact symptoms with my 85 and all I did was adjust
the tv cable and the cars been great for 3 months now! Procedure
should be on this forum in tech tips

Make sure your
transmission fluid is good and also full

Sep 21, 2004 | 01:19 AM

Frizlefrak

Race Director

Joined: Dec 2000

Posts: 17,551

Likes: 26

From: El Paso Texas

Quote:

Originally Posted by 90Indy

I suspect this has something to do with the torque converter locking up and not releasing but I don't know how to troubleshoot this problem.

Any hints at what to do to narrow down the possibilities would be much appreciated.

90Indy

You suspect correctly. Your torque converter is going out.

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