Check Engine Light due to cylinder #3 misfire on Jeep Grand Cherokee
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.
107 people reported this problem
28 commentsJeep Grand Cherokee vehicles with this problem
15 model years affected
Average mileage: 142,981 miles
(46,000 - 254,742)
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