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Showing results for tags 'running rich'.
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I have a 2003 Silverado 1500 with the 5.3 in it. For the past couple months the trucks been getting the p0172 and p0175 bank 1 and 2 running rich. I have clean the maf sensor and put a new air filter and spark plugs in and cleaned the pcv valve, throttlebody and map sensor too checked for leaks around the intake manifold and around the throttle body and found no leaks also put in new o2 sensors and the codes still come back up every time. Wondering if anyone else has had this problem or know what could be causing the codes? I’ll post a picture of the freeze frame data from the codes too.
