Quote:
Originally Posted by tbrown5079
At this point I would find someone with a smoke machine to determine where all the vacuum leaks are and repair them before you replace anything else. I fought the PO171 and PO174 codes until I finally borrowed a smoke machine and found a gasket out of place on the right bank valve cover (the side the donor vehicle was hit on. The stud on the valve cover was even bent). I know this can be very frustrating. Tbrown
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Hey Tbrown, thanks for the suggestion but I seriously do not think it is a vacuum leak. I put a code reader on it with "live data" enabled and watched my fuel trims. When you come off idle and go to about 2000 rpm, the short term fuel trims should get better if your problem is a vacuum leak. My numbers did not change at all. At this point I am thinking it is tied to the other fault codes I am getting (P0053/P0059) O2 heater resistance banks 1&2 sensor 1.
Still looking for ideas!!