My 91 DX wont idle while in drive when stopping at a light. I have to shift it from drive to neutal or park. Once I shift from drive to neutral or park it will idle normally and stay normal when I shift it to drive again. Once I apply power it will drive normally, but when I come to a stop it will again idle high. It does this hot or cold. I have changed the IACV and FITV with new parts. I need help. Killing me in brakes and very annoying. Had a problem here in the snow, just would drag the rear tires with the brakes locked.

 

not sure with your car but try the tps(throttle position sensor)could be that...............???????

 

I'll look at that. Thanks for the help

 

The car will start normally and idle and rev just fine. When you put it in D and drive it will drive normally, but when you let off the gas it will stay up in RPM's and stay there. You have to shift it in N or P. Could the re be a problem with the tranny computer or sensors? Just a thought.

 

all tranny signals go to the computer.....so i dont think so .....definately one of throttle sensors.......try tps

 

OK, but why only in a drive gear, fwd or rev and not in N or P?

 

tps also senses a load on the engine and will ajust

 

hope i was some help......good luck!!!!!!

 

Have you checked the throttle cable for binding?