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Originally Posted by xeroinfinity
Cheap o2 sensors dont last ling, you get what you pay for.
btw Bosch O2's are crap!
I've never seen that in any of my GM tech manuals.
The car should die when the MAF is disconected.
I think your guys problem, is the scan tool
Or you both have a Bad PCM/ECU, this shouldnt be that much of a mystery to solve....
Maybe you two should test the circuits with a volt/ohm meter, not that GENISYS scann tool.
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Yes, almost all of my checks have been done with my mutimeter. However. I just started using my Genisys scanner to learn all of the features it has. I do need the Genisys scanner to do the Case Learn procedure, but before I do that, the problems have to be resolved and the DTC's have to been cleared. It is very interesting that aki334 and I have the same symptoms with the P0300 DTC setting and no other code setting for the EGR valve. The unmetered air coming in may be something we should check on. Thanks for your support, Tommy.