lajeunesserick Posted October 8, 2009 Share Posted October 8, 2009 only when it rains or high moisture out side the car stutters and check enginlight comes on. we had the code read and it came up PO301 and PO303 and it says cylinder 1 and 3 misfire has any one heard of this . any suggestions?????? The car will stutter for a few min then i will use the auto shift and it will start to drive fine but the check engin light says on for days sometimes. but the car drives fine when no rain present? Link to comment Share on other sites More sharing options...
Legacy777 Posted October 8, 2009 Share Posted October 8, 2009 Welcome to the board. I would check the wiring around the coil pack which leads to the spark plugs Link to comment Share on other sites More sharing options...
Rooster2 Posted October 8, 2009 Share Posted October 8, 2009 may need to replace the coil pack, and or, spark plug wires. You prolly have a crack or split in one or both, so that water/moisture causes an electrical short. Suggest replacing your plug wires first, if they are your originals. Welcome to this forum, loads of friendly people here with good advise. Link to comment Share on other sites More sharing options...
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