95 4cyl, just bought it but when it’s cold starts good with 1000 rpm but within minutes the idle rpm rises to around 1500 rpm. Throttle cable is adjusted correctly. Any ideas what this problem might be.
No it stays around 1500.Does it ever come back down from the 1500 rpm?
^^This.^^Id start with pulling the Idle air control, cleaning the port and probably installing a new IAC. Once installed typically one will have already disconnected the neg on the battery and let your jeep it sit with the battery disco'ed for a couple hours. The ecm needs to be "reset" so to say.