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4t65 wont hold back on hill

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David440

New member
Hello all, I am new to this Forum and hoping for some good advice. I have a 1998 Grand Prix GTP Daytona 500 pace car. It will hold back on a hill for a short distance , then kick out as if to nuetral or shifting to a higher gear. I can engage the throttle slightly and the transmission holds back again for a while. I changed the fluid and filter, and also installed a transgo shift kit while I was in there but it did not seem to help much. I suspect some electrical problem. The trans does not slip in any gear under hard throttle, but I did notice the performance shift light will no longer come on. Any Ideas?
 


What do you mean by hold back?

Are you talking about sitting at a light and letting your foot off the brake, then the car rolls back a little.
 
David440 said:
Hello all, I am new to this Forum and hoping for some good advice. I have a 1998 Grand Prix GTP Daytona 500 pace car. It will hold back on a hill for a short distance , then kick out as if to nuetral or shifting to a higher gear. I can engage the throttle slightly and the transmission holds back again for a while. I changed the fluid and filter, and also installed a transgo shift kit while I was in there but it did not seem to help much. I suspect some electrical problem. The trans does not slip in any gear under hard throttle, but I did notice the performance shift light will no longer come on. Any Ideas?
Click to expand...

Irrelevant highlighted.

These cars do not hold on hills for the most part on the stock tune.
 
When I pull the trans back into second on a long incline to maintain a lower speed without riding the brakes, it will engine brake the car for a short distance then drop to around 1100 rpms as if the transmission has disengaged. a quick blip on the throttle restores the engine braking for a short time then it will disengage again. Not sure what is going on as I have not worked on too many new style automatics.
 
David440 said:
When I pull the trans back into second on a long incline to maintain a lower speed without riding the brakes, it will engine brake the car for a short distance then drop to around 1100 rpms as if the transmission has disengaged. a quick blip on the throttle restores the engine braking for a short time then it will disengage again. Not sure what is going on as I have not worked on too many new style automatics.
Click to expand...

You REALLY shouldn't do that. -- Our transmissions don't like it...Just use the brakes.
 


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