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Search Auto Parts Search Misfire code Sign up here!   Email This Post Auto Repair Home>> Automotive Repair>> Engine ODB2 Fault Codes ledconcepts New User Dec 23, 2009, 2:12 PM Post #1 of 3 (4051 views) Misfire code Sign In I have a 2005 Saturn Vue with a 2.2 liter ecotech. Reading code P0300 random multiple misfire. Has new plugs and coil boots still reads code. Is the ignition module the next thing I should replace? steve01832 Veteran Dec 23, 2009, 7:51 PM Post #2 of 3 (4038 views) Re: Misfire code Sign In Check for spark on all cylinders with a spark tester. If you have good spark all the way around, coils and module are good at this point. Check all of the fuel injector connectors with a noid light to verify injector pulse at all cylinders. Saturns are having problems with crank and cam sensors. They also have a high failure rate with PCMs. Please perform the tests as I have mentioned and post back with the results before replacing anything. Steve Sidom Veteran / Moderator Dec 23, 2009, 9:15 PM Post #3 of 3 (4034 views) Re: Misfire code Sign In In addition to the tests that Steve has mentioned you may want to run a compression test. Run the test while the engine is warm. If your scanner has the ability to see a data stream, go into the misfire counter and see if one cyl is misfiring more than the rest. (This post was edited by Sidom on Dec 23, 2009, 9:15 PM)   Email This Post   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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