P0172, P0175
97 stock Z28, driving home today my car started idling REAL rough. CEL came on shortly after, when i got home i ran the codes and P0172 and P0175 both banks running rich. the car will not start unless the pedal is floored and even then it takes a few seconds longer to start plus you can smell raw gas. fpr not leaking fuel, LT fuel trims are staying at 0 and the ST trims are going as high as -37 on both banks, also the temp sensor is reading fine. evap, egr, and rear o2 have all been removed and tuned out for a few years now. anyone have any clues as to where to look next?
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I would start by testing the fuel pressure and O2 readings.
I had a similar problem running extremely rich, turned out front O2s were toasted and pcm saw very lean exhaust |
badd 02 sensors
I would replace both 02,
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shazammmm
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Could be bad o2s. Try unplugging a front one see if it helps. Does the car run OK on a cold start?
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pull a plug and read it ? this is an old post tho hope you figured it out by now
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Sounds like the o2's are saying pull fuel? I would look elsewhere.
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god damnit chickenhawk bumping 2 month old posts lol
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Quote:
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0r this?????
you mite have too move your 02 sensors, back a little,
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Quote:
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02 sensors
move them back about 7to10 ins... try that that mite work??
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buk buk playazzzz
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