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Oxygen Sensor O2
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
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.
Monday, April 16th, 2012 AT 11:37 PM
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.
Monday, April 16th, 2012 AT 11:55 PM
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