Question about 1998 Jeep Cherokee
I have a 1998 Jeep Cherokee. The Genorator Guage goes on about 30 seconds after starting the car and reving it up to a few thousand RPM. At first I thought it was the alternator, so I replaced that which didn't solve the problem. I changed out the battery which was old, but the light still comes on. I'm thinking now that it is the voltage regulator. Is there any way to check this, and what is the solution?
The voltage regulator for the alternator is internal to the powertrain control module (PCM) and the PCM is located on the passenger's side under the hood on the fire wall; HERE diagram.
If you can't get to the wires with it running check the wires with an ohm meter to make sure there are no bad wires. HERE is a diagram to help.
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Posted on Nov 12, 2012
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Posted on Jan 02, 2017
I had the same issue with my 4.0, I went through all the same BS you did and in the end it was a faulty fuel pump. Pricy i know but im sure thats your problem
Posted on Nov 15, 2009
Check the connections at the alternator and battery. If they test out OK it does sound like the alternator is on it's way out. The regulator is built into the alternator on your vehicle.
Posted on Nov 29, 2009
Testimonial: "Thank you for your help. Your answer confirms just what I was afraid of... new alternator. $$$. Early Xmas present for you, good ol'Cherokee..."
SOURCE: I have a 1993 jeep
How can the Alt and Battery be good, but not charging? The Voltage Regulator is inside the alternator. Keep out of the Parts Store and take it to a shop and have it checked on the truck. you may have wiring issues.
Posted on May 14, 2010
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