SERVICE ENGINE LIGHT CAME ON YESTERDAY

  • Tiny
  • Anonymous
  • 2003 Saturn L200
  • 227,000 miles

Service engine light came on yesterday. Car started running rough and seemed like it would die when pulling up to a stop. While stopped the light would stay solid, but while driving it would flash. Temp stayed normal and no other lights were on. Hooked up a scanner and it said random sparkplug misfire. In talking with people we have been told it could be a coil pack and also the computer. How do we know if it is computer w/o putting money out for parts that may not be defective? Funds are very limited and we are trying to repair effectively and as frugally as possible.

Wednesday, January 9th, 2013 AT 2:50 AM

1 Reply

  • Tiny
  • saturntech9
  • Expert
  • 29,299 posts

I would do a spark test and see if any of the spark plugs don't have a nice blue spark?I would say the coil pack is way more likely then the computer.

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Wednesday, January 9th, 2013 AT 2:55 AM

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