Codes P0171, P0174, Cleaned MAF, Still On!
10-25-2008, 09:26 AM
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Codes P0171, P0174, Cleaned MAF, Still On! Hey guys,
It turned out that there was a leaking pcv hose, its fixed now. Thanks
It turned out that there was a leaking pcv hose, its fixed now. Thanks
Last edited by Tuffguy610; 04-20-2012 at 09:55 AM. Reason: fixed
10-25-2008, 09:36 AM
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Those codes say you're running lean on both banks. Most likely cause is a vacuum leak or PCV issue. www.gearchatter.com/viewtopic8886.php
10-25-2008, 02:04 PM
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Chase, do you mean nitrous? Nah I haven't used any nitrous on this car. I have the printout from the gearchatter link already. I changed the PCV valve a year and a half ago. The funny thing is that I have been noticing a smell of gas when I take off from a stop. I know I'm not obviously running rich because of the codes set in the PCM and the car is actually running pretty efficient on gas now. Maybe the gas smell could indicate something?
10-25-2008, 02:13 PM
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Nah I didn't do that yet. I have heard of that trick. Its raining out today so maybe tomorrow I'll try that. I thought maybe he meant a wet shot of nitrous into the intake or something like that.
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10-25-2008, 03:14 PM
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Still could be a MAF problem - maybe the heater element took a dump. MAFs work by heating up an element. As incoming air comes in, it cools the element, more air = cooler element. Then it takes a reading based on how many amps it takes to keep that element 200 degrees above ambient air temperature. This is all done super fast. So your MAF still could be going out.
10-26-2008, 01:36 PM
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Yea, I changed it like 4,000 miles ago. Update: Did the intake spray test today with carb cleaner to see if it would raise the idle speed. It didn't. The light was still on when I left to go out for the day, I said the hell with it. To my delight, I was leaving my favorite pizza joint when I realized the SES light turned off! It does this sometimes, but I am thinking that maybe after cleaning the MAF it had enough clear drive cycles for it to clear the code. I had started and driven the car maybe 6-7 times since I cleaned the MAF. Anybody have any ideas for how many drive cycles it would take for that?
10-26-2008, 03:40 PM
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this might be a dumb question, but what kinda gas are you running? I bought my car it was hittin codes and thought it was the 02. The guy had mentioned he was running regular gas in it because he never drove it.
After bout 2 tanks of premium light is off and has not came back on.
After bout 2 tanks of premium light is off and has not came back on.
10-26-2008, 04:55 PM
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take it on the highway and do some driving. The tests have something to do with going 50 mph and decelerating to 30 or something like that. Don't quote me on that part.
