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bgsdaddy 03-23-2012 07:35 PM

'00 TJ 4.0 L Check Engine Light
My '00 4.0 L check engine light was on a week ago, Auto Zone scanned it and it came back with a Throttle Position Sensor problem and a cylinder 1 misfire. Replaced the sensor and put all new spark plugs in. CEL back on again this afternoon, scan shows cylinder 1 misfire again! Do i need to replace the coil pack?? Any other ideas? Thanks.

CoyoteOn2 03-23-2012 07:38 PM

How old are the Wires ?

bgsdaddy 03-23-2012 07:48 PM

No Wires, It's got that big coil pack with the boots attached to it.

oIIIIIIo 03-23-2012 07:52 PM

That happened to me awhile back and I replaced the coil pack. This took care of the misfire code.

bgsdaddy 03-23-2012 08:05 PM

Thank you.

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