89 chev trk idles too fast about 2000 rpms?
all the time . what could cause this ?
- DavidLv 68 years agoFavorite Answer
adjust idol if carberated. if fuel injected, throttle body positioner may be bad. timing may be advanced.
- 3 years ago
seek for any glaring intake air leaks from broken hoses, lacking vacuum caps, and so on. faucet gently on the idle air bypass valve with a small hammer or different blunt merchandise and if it idles down, replace the valve. If no longer, unplug the wiring connector from it. If the idle continues to be severe do away with it and block or plug the ports that are uncovered, hermetic. If the engine nonetheless idles severe, there is an air leak someplace. If no longer, the IABPV continues to be the main probable suspect, even though it could additionally be a project with the computer or the wiring in between. bypass much low-priced and attempt a used valve as they do no longer bypass undesirable that in many situations.
- Anonymous8 years ago
just adjust the carb idle speed