CYLINDERS 1 AND 4 NOT FIRING

  • Tiny
  • myself1168
  • 1999 Saturn SL2
  • 150,000 miles

Okay so I'm having an issue with the cylinders 1 and 4 not firing, they are on the same coil. I've switch coils and they still don't fire. I've also switched out the ignition control module, and still 1 and 4 are not firing. I am at a loss for what should be checked next. Thanks in advance.

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Wednesday, May 8th, 2013 AT 7:42 PM

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  • Tiny
  • myself1168
  • Member

Also it is not sparking from/at the coil so its not wires or spark plugs.

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Wednesday, May 8th, 2013 AT 7:51 PM
  • Tiny
  • mhpautos
  • Expert
  • 30,587 posts

Scan for a crank angle sensor fault check for power at the coils.

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Thursday, May 9th, 2013 AT 3:19 AM

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