Car Problem Reports

Saturn L300 Ignition Module or Coil May Fail Causing Engine Misfire

Saturn L300 Problem
12 Reports
Me Too

Model Years Affected: 2002, 2003, 2004, 2005

Engines Affected: 2.2L 4 Cylinder, 3.0L V6

Average Mileage: 82,750 mi (48,000 mi - 140,000 mi)


The ignition module or an ignition coil may fail causing the engine to misfire which can cause the Check Engine Light to illuminate or begin flashing.

  • Visitor, , 3.0L V6

    Car intermittently will not start. At first thought it was the fuel pump. Had it replaced, problem still occurred. I had the car checked out at another service center. They say the coils need to be replaced. I also was told by another source that it also may be the camshaft sensor. I may have both replaced.

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  • Visitor, , 3.0L V6, 90,000 mi

    Have had this problem multiple times. 4 in the past 3 years. They replace the spark plugs for around $400 and call it good. I'm thinking there is more to it than that at this point.

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  • Visitor, , 3.0L V6, 140,000 mi

    Got a diagnostic done and found an error that the "2 4 6 ignition coil" is misfiring.

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  • Visitor, , 3.0L V6, 48,000 mi

    When starting engine, the idol goes high low. Have to keep restarting or pop the hood and play with the wires kind of up near the windshield, passenger side. Engine not getting enough power. Sounds like its misfiring

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  • Visitor, , 3.0L V6, 85,000 mi

    service engine light came on, and they started mis-firing. diagnosed as failure on plugs 1,3,5.

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  • Turp, , 3.0L V6, 68,000 mi

    I have a 3.0 6 cyl LW300. Several times in past month, engine would run rough and shake when first starting up. Sometimes, when I shut it down then, re-started it, the problem was gone. Sometimes, "service engine soon" light would stay on, even though the engine ran fine. Had a shop hook it up to a diagnosis machine that should the number 6 cylinder misfired 477 times.....but the engine ran fine. They cleared the error and service engine light went out, and vehicle runs fine. Mechanic said if it happens again, he may need to replace the coil wiring.

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