Mood Swings
March 16th, 2011, 3:53 PM
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Mood Swings
Ok guys, a week ago or so i posted about my truck throwing the p0172 and p0175 "too rich" codes. As basic maintenance and also to maybe correct the issues, i replaced my (original GM) air filter. Now, I'm getting p0171 and p0174 too lean! Could it have been not sucking enough air and have had a fuel blockage? I didn't notice any crazy power gains after the air filter, but now I'm guessing it's a fuel filter? I have yet to test my fuel pressure but i"m assuming if the air filter was stock at 155k, so is the fuel filter. Any other ideas? Thanks!
March 17th, 2011, 9:26 AM
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Sorry, forgot to mention that. It's a 97 k1500 5.7 vortec. I took the MAF off, but it was sparkly clean to the eye. Is it still worth a cleaning? Also, I cleared the codes after the air filter, so they came back after that. Also, no problems whatsoever with hesitation missing. Thanks for the replies!
March 18th, 2011, 5:36 AM
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The truck runs fine, nice smooth idle (650ish) and no bogs/hesitation etc. I just got the truck so I don't know about the fuel filter. I'll probably do that even though it's too rich
