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Unread 05-31-2012, 03:09 PM   #1
dread97
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Join Date: May 2012
Posts: 2
Code 0353 coil "c"

This has been happening for a couple weeks now. I have 2000 Cherokee lmtd 4.0 . When it is started and I take off with the engine cold it will misfire to the point of almost stalling, and the engine light will illuminate. Then if i turn the ignition off and then back on again the engine runs perfect,( no misfire) and will run fine from then on. If I allow the engine to warm up before I take off the misfire is not present, and it runs fine. And the engine light will go off after 3 or 4 warm starts. I replaced all the plugs, and the same cold temp misfire occurred. Had code read 0353 coil c. Wondering if replacing the number 3 boot of the coil rail will fix this or if anyone else has had same issue.

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Unread 06-01-2012, 12:43 AM   #2
jnicewan
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1995 ZJ 
 
Join Date: Dec 2010
Location: Norman, OK
Posts: 2,082
That code is pretty specific to the electrical circuits of coil #3 or "c". If you had a problem on the secondary side (boot, wire, plug ) you would get a misfire code. You might check the circuit wiring, connectors and pins associated with that coil. Maybe give the connector and circuits a wiggle when the engine is running to see if you can duplicate the problem.
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Unread 06-01-2012, 11:15 AM   #3
dread97
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Yeah good advice, it just seems strange that this only happens if the vehicle is driven before temp reaches about 100. And it won't happen while vehicle is at idle as it warms up.
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Unread 06-04-2012, 03:55 AM   #4
CJ7-Tim
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2000 XJ Cherokee 
 
Join Date: Apr 2002
Location: out in the garage - Minneapolis, Minnesota
Posts: 22,102
What brand and what part number spark plugs ? Are the spark plug boots correctly installed on the plugs ?

2000-01 XJ Cherokee have coil on spark plug ignition, so there is no distributor or spark plug wires. If the spark plugs are fresh and are the correct type/number, the code probably indicates a faulty coil rail. The coil rail should be tested.

P0353 JEEP - Ignition Coil 3 Circuit

Possible causes
- Ignition Coil harness is open or shorted
- Ignition Coil circuit poor electrical connection
- Faulty Ignition Coil
- Faulty Engine Control Module (ECM)

When is the code detected?
Each ignition circuit is continuously monitored by the Engine Control Module (ECM). The test fails when the ECM does not receive a valid pulse signal from the ignition coil.

Symptoms
- Check Engine Light ON
- Lack/Loss of Power
- Engine may be harder to start
- Engine hesitation
- Rough engine idle
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