dheck tention on drive chain, probable too tight
it will drive but when in reverse it wont move
If your Pontiac runs a 700r4 gm transmission you have stripped a reverse input shell. The transmission needs to come out for repair.
it sounds like you are having the same problems i am having you need to replace the drive belt mine slipped off the idler bearing and stuck in reverse and now i am trying to find out how the belt goes back on
I had that in a vehicle i used to drive, and they had to replace the whole wiring system inside the transmission
that sounds like your transsion you should have it looked at although you can drive it with out reverse for quite a while
Drive...
Carefully.
A transmission that is not engaging fully when in drive might need a new shift solenoid. There is also a chance that a band is stretched or broken inside the transmission.
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As fast as you can drive it in reverse.
if the generated emf in motor is greater than supply voltage means the drive will goes to reverse
I have a 1997 GMC 1500 4 Wheel Drive. When engaging 4 wheel drive there is a popping noise (different than and in addition to the normal sound of it engaging) and it does not always engage. Then it will even have a popping noise once engaged. Any ideas? Thank you for your input. Stan