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check engine light code#p0302 Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> CarJunky>> Open Posting Guest Anonymous Poster snoe2006@yahoo.com Feb 14, 2008, 6:43 AM Post #1 of 5 (5602 views) check engine light code#p0302 Sign In Hi, I have a Mercury Grand Marquis 1997. Recently check engine light came on and through a live data scanner it showed p0302. I changed plugs a few months ago and wires last April. I decided to swap #1 and #2 plugs to see if that would help, but it still shows the same code. Could anyone direct me to what I might look at next. Thanks dave284 Enthusiast Feb 14, 2008, 8:06 AM Post #2 of 5 (5599 views) Re: check engine light code#p0302 Sign In Your code fault is within the coil way2old Veteran / Moderator Feb 14, 2008, 5:00 PM Post #3 of 5 (5596 views) Re: check engine light code#p0302 Sign In What kind of plugs and wires did you use? If you opted for the cheapest parts, that may be the problem. Being way2old is why I need help from younger minds Guest Anonymous Poster snoe2006@yahoo.com Feb 14, 2008, 6:15 PM Post #4 of 5 (5595 views) Re: check engine light code#p0302 Sign In I did use Motorcraft plugs, but used Autolite plug wires. I guess they may be inferior, and I did check the coils, they are 7 ohms which is less than specified , so would changing them also be in order? Thanks way2old Veteran / Moderator Feb 14, 2008, 6:32 PM Post #5 of 5 (5594 views) Re: check engine light code#p0302 Sign In Try changing the wires around to see if miss moves or stays on the same cylinder. If it moves, the wire is bad. If miss stays on same cylinder, either the coil or injector is probably the fault. Being way2old is why I need help from younger minds   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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