Quote:
Originally Posted by 1boxsterjim
I tried the cigar trick and seemed to find a leak from the throttle body gasket. Replaced the gasket but still have issue. Took to a shop and had a smoke test, unfortunately it passed with flying colors. One of the mechanics thought he heard an exhaust leak and said the gasket on the manifold to cat sometimes goes, does that sound like a possible solution?
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P1126 is on bank 1 normally for:
1. Intake system is leaking
2. Fuel pressure is too low
3. One or more injectors is failing
4. Volume of fuel delivery is low
I would suggest running fuel trims, check fuel pump for correct delivery pressure and volume. I would also pull the plugs on bank 1 looking for one that is sooty or black and wet.