Check engine light
06-04-2013, 12:51 PM
#1
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Model: Cherokee
Check engine light
1999 Jeep Grand Cherokee 4.0 .
Check engine light will not go off?
Took to Autozone , Orileys , and Jeep Dealer,
no codes scanned.
Tried myself to delete light, by disconneting batt. cables
10 min. 30 min. and all other methods, no luck.
Replaced cooling fan relay, when light first came on.
Everthing works fine.
I even traced wire from relay, to PCM all OK.
Any help. Thanks.
Check engine light will not go off?
Took to Autozone , Orileys , and Jeep Dealer,
no codes scanned.
Tried myself to delete light, by disconneting batt. cables
10 min. 30 min. and all other methods, no luck.
Replaced cooling fan relay, when light first came on.
Everthing works fine.
I even traced wire from relay, to PCM all OK.
Any help. Thanks.
06-04-2013, 01:22 PM
#2
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Join Date: Jun 2013
Location: Vermont
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Year: 1997
Model: Cherokee
Engine: 4.0L
Mine is having the same problem, I believe it is the OT sensor according to another jeep person I know thats what it should be, Google How to replace OT sensor in jeep.
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06-06-2013, 10:36 AM
#9
Old fart with a wrench
You DO know there are 2 fuse panels, right? One above the brake pedal and one under the hood?
06-07-2013, 04:01 AM
#12
Old fart with a wrench
Put a code reader on it while it's running. It may be something that isn't setting a code.
I've had a technition tell me, if in doubt, replace the 02.
I've had a technition tell me, if in doubt, replace the 02.
Last edited by dave1123; 06-07-2013 at 04:04 AM.
06-07-2013, 11:52 AM
#14
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Location: Canastota, New York
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Year: 2015
Model: Cherokee (KL)
Engine: 3.2l
Have you tried tracing the wire back to the actual bulb? You could have a funky connection causing the bulb to be on constantly.
06-07-2013, 02:04 PM
#15
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Model: Cherokee
check engine light
All the dash warning light bulbs, including check engine light,
are all mounted in a circuit board, the socket and bulb unit,
twist in to the circuit board.
I guess I could see if the wiring harness that plugs in to
the dash circuit board, and find the right wire to the check engine light socket, but I don't know what color wire that would be?
Any help on that?
are all mounted in a circuit board, the socket and bulb unit,
twist in to the circuit board.
I guess I could see if the wiring harness that plugs in to
the dash circuit board, and find the right wire to the check engine light socket, but I don't know what color wire that would be?
Any help on that?