Need Help bad...SES Light is on...know codes....how do I fix it?
Thread Starter
Teching In
Joined: Mar 2002
Posts: 36
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From: Bristol, CT
Need Help bad...SES Light is on...know codes....how do I fix it? I'm getting Low circuit voltages on all O2 Sensors (P0131, P0137, P0151, P0157). I've replaced all but one O2 sensor (drivers rear) but nothing has helped. Any idea what may be causing these codes? I've run autotap and my O2's are running down in the range of .025 at wide open throttle.....I'm guessing that is way low. Any help on how to fix this thing would be much appreciated. Thanks!
Colin
1998 Z28
Colin
1998 Z28
Thread Starter
Teching In
Joined: Mar 2002
Posts: 36
Likes: 0
From: Bristol, CT
Re: Need Help bad...SES Light is on...know codes....how do I fix it? I checked the wires when I replaced the O2's. They seemed fine. Its acting like its starving for fuel. I was told the O2's need to be .9XX at WOT...anything lower means its running lean....I know they aren't 100% accurate but the .025 I'm getting is WAY below the .9XX. I tossed some injector cleaner in to see if that would help. I also replaced the fuel filter. What else could I look at to make sure I'm getting enough fuel into it? Is there something on Autotap I could look at to sort of narrow the problem down? Thanks for the help.
Colin
98 Z28
Colin
98 Z28
Thread Starter
Teching In
Joined: Mar 2002
Posts: 36
Likes: 0
From: Bristol, CT
Re: Need Help bad...SES Light is on...know codes....how do I fix it? I think I fixed my problem! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> I took the MAF off and saw that the little wires had a nice black coating on them so I cleaned them up gently. Now when I'm at WOT the O2's are reading around .900 and I haven't set off the SES light yet! Thanks for all the help guys!
Colin
98 Z28
Colin
98 Z28
