cheapcherokee93
<----boat-manche
- Location
- Guadalahabra, CA
so i replaced my valve cover gasket on my 88 MJ because it was leaking. so i do the change, whatever. hook everything back up, and now i have a higher idle of 1200 rpms. WTF :flamemad: those of you might have already seen my other thread where it was just at 1000 rpms and i was trying to solve that, but now its obviously gotten worse for no apparent reason. i've already tried different IACs with no change, also tried a different IAT with no luck either. TPS is calibrated, less than 1 OHM resistance to the sensor grounds. next on the list is the O2 sensor, will see what that does but in the mean time, any ideas? i didn't think a valve cover gasket would have anything to do with my idle :dunno: