1993 Jeep Cherokee 6 cyl Four Wheel Drive Automatic 285000 miles
My 93 4.0L jeep 's check engine light comes on about every other time I start it. When this happens the volt meter reads low voltage and the alternator is not charging. Sometimes the alternator starts charging after 15-20 seconds but check engine light does not go out. I am using a clamp around amp meter on the battery wire on the alternator to check for output. The check enginge light will go out if I shut off the engine and start it again. The never comes on if the alternator is charging at start up. Is it the regulator in the alternator or the ECM. I have had to replace the ECM twice already for other reasons and don't want to do it again. Thanks Rusty Mule.
have the same problem?
Sunday, October 24th, 2010 AT 3:35 PM