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.
Check Engine Light due to cylinder #3 misfire on Jeep Wrangler
Average mileage: 82,483 (60,000–148,900)
Engine affected: 4.0L 6 Cylinder
8 people reported this problem
3 people shared problem details
2003 Jeep Wrangler- 4.0L 6 Cylinder63,000Visitor
Drove 200 miles in 85 degrees stopped for 10 minutes and had a misfire when started back up
2003 Jeep Wrangler- 4.0L 6 Cylinder99,000Visitor
Check engine light flashing with cylinder 3 misfire code
2013 Jeep Wrangler60,000Visitor
Cylinder # 3 missfire
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