Question about 1999 Mercury Grand Marquis
I just got the diagnosis on our 99 grand marquis and it says i have a bad ignition coil or coils 4 and 6 . Is this type of job that i have to take to a mechanic or is it a simple tune up?
The last number in a po30 code is the cylender with the missfire. you say you have po306 and po302 which means #6 and#2 are missfiring. if you stand in front of car the passenger side has 1 through 4 cylenders starting with # 1 in front and # 4 in rear and driver side has 5 through 8 starting with # 5 in front and # 8 in rear. passenger side 1 2 3 4 - driver side 5 6 7 8. if you have indavidual coils on each plug then just unplug the coil and take the single 7mm screw out that holds it in place and the coil will come straight up off the plug
Posted on Feb 20, 2009
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Posted on Jan 02, 2017
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