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Does your A/T light stay on or blink intermittently. if it stays on it is due to overheating of the fluid or overall transmission temp. if it blinks it is due to an electrical issue like a faulty speed sensor. this applies to my monty it may not apply to yours.

if its overheating best bet is full flush including secondary cooler and if it doesn't have one consider getting one.


I'll probably do another flush to be safe. It does flicker a bit, but then stays on, like the temp is "tickling" (can I use that word on a truck forum?) the threshold before it comes on solid. Then it goes off after sitting in idle for a few mins.

I hate opening transmissions. I feel like I'm opening a demon portal...

1991 Montero LS (LWB) 3.0L V6 Stock 205K Miles