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Old 06-18-2015, 03:30 AM   #6
Hummer-addict
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Join Date: May 2015
Location: Connecticut
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Quote:
Originally Posted by barks View Post
i cant believe that if the timing was out on bank 2 it wouldnt tell me?
but if thats true then the same issue could be with bank 2 and both caused by o2 sensors.

unplugged maf seams a bit better,

i looked to see if i could swap the front and rear o2 sensors and they look the same.
looking under the car i only have 2 rear cats?

manifold-curved straight through pipe with an o2 sensor in it-rear cat with o2 after it-silencer

ive read that faults codes can differ with dme revision so checking that to make sure.

if the mechanic that did the compresion test didnt dissable the ignition system would it be possible that an arcking coil pack could have trashed the dme ?

regards
barks
If you unplugged the mass air flow sensor and it runs better doesn't that mean the mass air flow sensor is the issue? Did you try cleaning it?
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