:huh:
I have an 89 302 efi BRONCO 90,000 MILES. My idle went up and recently will not come back down. It goes to 1800 RPM comes back to 1600 then goes back and forth. In drive it Idles at about 1200 RPM. I tried IAC changing that out, I tried a new TPS, and adjusting it, cleaned the whole trottle body liberaly, put a new throttle body gasket on, replaced a few qestionalbe vacum lines, PCV valve ....double triple checked vacum lines.......still same syptoms not a lick better. HELP!
I have an 89 302 efi BRONCO 90,000 MILES. My idle went up and recently will not come back down. It goes to 1800 RPM comes back to 1600 then goes back and forth. In drive it Idles at about 1200 RPM. I tried IAC changing that out, I tried a new TPS, and adjusting it, cleaned the whole trottle body liberaly, put a new throttle body gasket on, replaced a few qestionalbe vacum lines, PCV valve ....double triple checked vacum lines.......still same syptoms not a lick better. HELP!