Quote:
Originally Posted by 88Racing
If you don't have any vacuum leaks and have changed out the maf the next two suspect are the forward o2 sensors and exhaust manifold leakage before the o2 sensors...
Also when's the last time the spark plugs were done?
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truck has 98,000 on it , plugs were done at roughly 83,000miles, wouldn't an o2 sensor and an exhaust manifold leak be biased to one bank, unless both senors went bad at the same time?? My fuel trims are even between banks all the way through the RPM range, but indicate lean off idle. and I don't hear an exhaust leak