2006 jeep cherokee 4.7 . When in open loop engine runs fine ,Cylinders1,3,5,7, go dead in close loop.

2006 JEEP GRAND CHEROKEE
85,000 MILES
Avatar
CURTIS78
  • MEMBER
  • 1 POST
Cylinders 1,3,5,7,go dead when engine goes into close loop . Replaced o2 sensor bank 1 sensor 1. When engine is warm you can unplug overhead coils for 1,3,5,7 and no change .
Apr 16, 2012 at 11:37 PM
Advertisement
Avatar
ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
i would be looking at a possible pcm. before doing this, get a real shop with the ability to diag this correctly.

make sure they do a compression test and check all the basics.


Roy
Apr 16, 2012 at 11:55 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.