OK, so i replaced my o2 sensor with one of those universal 4 wire one and its working perfectly a few weeks ago. Now i go to hook up my air/fuel gauge and it stays on rich. when i touch the signal wire and the tb butteryfly with my finger it reads correctly. WTF is goin on with my car? anyone ever had a similar problem?

 

If you're talking about a narrowband hooked up to your stock o2 sensor,
then it was never working right in the first place, other then flashing lights.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CleanLikeJdm &raquo;</TD></TR><TR><TD CLASS="quote">If you're talking about a narrowband hooked up to your stock o2 sensor,
then it was never working right in the first place, other then flashing lights.</TD></TR></TABLE>

..that get really annoying at night

 

its a regular autometer air/fuel gauge

 

Test each of the wires with a voltmeter. The new O2 sensor could have the wires pinned differently.

How is your gauge wired up? Check all those connections. You might have messed them up inadvertently.

 

the wires are correct, i checked them already, ill test the wires with a voltmeter, what am i looking for when i test them?

 

throw it away. it tells you nothing useful anyway.