1996 Isuzu Bighorn 3.1 diesel auto When driving up long steep hills where the transmission is in a low gear for more than a few seconds it will not change back into top gear after reaching the top of the hill.Even after driving down the hill & along the flat for some time its still in the lower gear.Stopping & switching off & immediately restarting the engine resets it & on driving off it changes into top gear as normal
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the oD lamp doing that means scan me. on all cars..... use any scan tool of 1996 or newer. if not ,use the flash codes... ask.
no year stated! and FAILS
older post.
When this light blinks it indicates a problem exists with the electronically controlled transmission, have it scanned for the fault code that is store in the control module.
This is the classic symptom of a vehicle with a failed torque converter lockup solenoid. The lockup solenoid "locks up" the transmission to the drivetrain but only operates when the transmission progresses from first gear to second gear.
Problem is the detent springs for 4/5 gear have gone weak .
If you are handy its take the top off the gearbox from inside the car and you will see the plug then the springs and balls .
If not its a transmission shop job.
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