90 4L60 Lock up issue

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Oct 12, 2005 | 12:05 AM

90IROC1

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Joined: Sep 2005

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From: Santa Rosa, CA

Car: 90 IROC-Z

Engine: LB9

Transmission: M5 5spd

Axle/Gears: 3.42 POSI

90 4L60 Lock up issue

My 90 4L60 trans has been locking and unlocking the converter wile at any cruise speed! It was un hooked and the car stoped. How can I fix this issue and still keep the converte lock up plugged in.

Thanks Mark

Oct 12, 2005 | 01:13 AM

3.8TransAM

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From: Schererville , IN

Car: 91 GTA, 91 Formula, 89 TTA

Engine: all 225+ RWHP

Transmission: all OD

Axle/Gears: Always the good ones

Possible 4th gear switch or tcc solenoid.

If it stalled with it unplugged i would say you have an issue with the actual lock up solenoid.

Could also be a short somewhere in the wiring too, but odds are heavily that it is the tcc solenoid

later
Jeremy