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Jeep Wrangler Problems

Check Engine Light due to cylinder #3 misfire on Jeep Wrangler

Problem Description and Possible Solution

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.

(13 people reported this problem)

Jeep Wrangler Vehicles With This Problem

RepairPal Verified
Average mileage: 81,557 (60,000–148,900)
Engine affected: 4.0L 6 Cylinder
3 model years affected: 2003, 2004, 2013
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Viewing 1-4 of 4 comments
#3 cyl missed fired drove to OH and home every time I stoped to get fuel eng would run rough until I was rolling about10 mph then it was ok . no code present taken to different shops no display of cone what is the sleeve on # 3 injector and where do you fet one?
Drove 200 miles in 85 degrees stopped for 10 minutes and had a misfire when started back up