Advanced YJ Jeep Wrangler Forum
I have trouble with my jeep wrangler (1987) idle speed.
I have replaced my 4.2 engine with a 4.0HO from a cherokee XJ donor including the AX15 transfercase and all the wiring. ( engin and dash )
When I start my engine it runs over 2000 rpm.
When I disconnect the airtube from the map...