SR oxygen sensor problems

[90sr]

i am having the same problem, 90 240 with redtop sr, my a/f gauge is all hooked up properly lights up n everything, mine reads really rich tho, im not sure but i heard it might be cause of my cat, i had custom exhaust built 2 1/2 from downpipe back but i kept the old cat on there cuz im yet to get my high flow cat and i heard it might cuz the cat might be shit but i dont no.

chris

[MeltedMonitor]

Hmmm... the o2 sensor diagnostic?

The first thing I did was hooked the air/fuel gauge to the wire at the ECU and got the strange reading.

Secondly I verified that the wire I was connected to was the same as the one at the o2 sensor using the ohmmeter. Check.

Next I ran a wire directly to the o2 sensor to a voltmeter in the car. Same result.

What diagnostic are you refering to?

Darren

[MeltedMonitor]

Originally Posted by 90sr

i am having the same problem, 90 240 with redtop sr, my a/f gauge is all hooked up properly lights up n everything, mine reads really rich tho, im not sure but i heard it might be cause of my cat, i had custom exhaust built 2 1/2 from downpipe back but i kept the old cat on there cuz im yet to get my high flow cat and i heard it might cuz the cat might be shit but i dont no.

You say you are having the same problem, but that it is indicating a rich mixture. Is it changing at all when you drive the car? If it isn't then it does sound like the same problem... if it is changing then it would seem that the gauge is working and it isn't the same problem.

Darren

[90sr]

no it doesnt move at all, it just sits all the way rich, i dont understand it at all.

chris

[MeltedMonitor]

Well, I am on the lookout for another o2 sensor to try... I will let you know the results.

Darren