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Misfire on 1 and 4

Tiny
CLOUWIEN
  • MEMBER
  • 2007 JEEP WRANGLER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 53,000 MILES
Has no spark for 1 and 4 cyl. Also scanner shows no pulse width for those cyl. Replaced coils, plugs and wires. Not sure where the coil gets its feed from or what voltage should I see at the plug in
Thursday, February 17th, 2011 AT 9:37 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,490 POSTS
Hello,

Yep no pulse width for individual coils means the PCM coil driver has gone out from those cylinders and the PCM needs to be replaced.

Here is a guide on misfires in general so you can check that out as well.

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

Please let us know if you need anything else to get the problem fixed.

Cheers, Ken
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Wednesday, June 21st, 2017 AT 7:12 PM

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