p0131 and p0151
09-09-2010, 06:40 AM
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Staging Lane
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p0131 and p0151 Just bought my first trans am 2 days ago (98 trans am a4 82000 miles) so I am a nebie. Anyways I already got a check engine light, got it checked and was p0131 and p0151. I know its the 1st o2 sensors before cat both banks. Going to check maf and clean it also. Need some more help please. Car idles fine and revs fine. Seems like its not pulling and missing when I get on it. Read something about a fuse to check and also injectors....?
09-12-2010, 07:41 PM
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Got this all figured out...I think. Maf was very very(don't know how it got anything) dirty! Also just for the hell of it I changed the o2's,fuel filter,theramastat, and engine coolant temp sensor. Engine still runs at 170-180? But I am not concerned. Had a race for the 1st time 05 gt...I think and I walked him easily.
09-24-2010, 09:07 AM
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Damn codes came back! Checked the fuel pressure at the fuel rails and it was 49psi. So I changed the fuel pump(whole assembly) and now at 60psi. So I went for a drive and what do you know, as soon as I get on it the check engine light again. p0131,p0151. hmmmmmm.....
05-28-2011, 11:30 AM
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Did you ever find out what caused the problem? Im having the same issue but only at WOT, it throws P0131 and P0151. I changed the TPS sensor 3 months ago which seemed to fix the problem, the codes never came back. Now today they came back, going to change the fuel filter today to see if it helps. My car is a 98 with only 51k miles so it sits ALOT which makes me think im having a fuel pressure problem ie clogged filter, bad regulator, or pump. I have a scan tool with live data but all the data seems to be fine.
