With the cam,heads, blower and all that mess I have, my 92 coupe has always idled its best at right at 1000 or a hair under. If I would let the car idle for a long while it would eventually drop to around 600 rpms like I flipped a switch and would stay there until I would drive it around and then it would be good back at around 1000.
Now I can almost anticipate the drop. Like pulling up to a red light it will idle just fine until the motor reaches around 160 degrees then it's like a switch is flipped and it drops down to around 600. Light turns green I go and stop at the next red light idles fine around 1000 and again after a few minutes it's like a switch is flipped and it drops to around 600. Any ideas and input on how to fix this annoying issue would be appreciated!!!
Now I can almost anticipate the drop. Like pulling up to a red light it will idle just fine until the motor reaches around 160 degrees then it's like a switch is flipped and it drops down to around 600. Light turns green I go and stop at the next red light idles fine around 1000 and again after a few minutes it's like a switch is flipped and it drops to around 600. Any ideas and input on how to fix this annoying issue would be appreciated!!!