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Hello
Well, long story short, there was more then one problem. This was my first post about it. I had a leak at the valve of the resonance tube, the second tube of the intake ( not sure you have that with a 2.5). This correct the high end power cut off. MAF was not good too, then not long after it, AOS blew. change that so no more smoke and no code of mixture treshold. Finaly, we find out that there was a short at the MAF ground. We try to squeeze the connector pin of the MAF for better connection. So no more rought idle and engine stall intermitently. All look good for about 10 months.
But last week, it happen again, low power, then Rought idle and engine stop. Look like the ground is acting again. This time I will ask the MAF plug to be change.
Hope it can direct you in some way to figure out your problem.
Later
Chris
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