Problem overview
A Check Engine Light may illuminate indicating a "Cylinder #3 Misfire." This normally occurs in hot weather after the vehicle has been driven, parked for ten to twenty minutes, and then restarted. Heat from the exhaust vaporizes fuel inside the #3 fuel injector and causes the misfire. Installing an insulator sleeve normally lowers the temperature enough so the fuel will not vaporize.
108 people reported this problem
29 commentsJeep Grand Cherokee vehicles with this problem
16 model years affected
Average mileage: 144,498 miles
(46,000 - 254,742)
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