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