DomesticLS1

Hi just the other day I punched my 99 t/a and my ses light came on. I immediately took it autozone and they said that both bank 1 sensor 2 and bank to sensor 2 had low volts. I then bought 2 new bosch sensors and then when I punched it again my light came on. If I drive around for awhile my light will usually go back off. But once it came back on I took it back to autozone to see what it could be now. They said it was the same sensors with low voltage...so hmmm???? There new sensors still with low voltage...Does anyone know what this could be???

Shallow Bay

iTrader: (3)

Did you replace the front or rear O2 sensors?

DomesticLS1

the rear o2's.

2001NBMZ28

Can you post the codes?

Shallow Bay

iTrader: (3)

I'm guessing P0137 and P0157

DomesticLS1

yeah im pretty sure that was the codes. thanks

2001NBMZ28

I'd have the codes read again to be sure they told you the right bank(s)/sensor(s). That's why I asked about the codes - just to doublecheck.

DomesticLS1

I had it checked twice, it was sensor two in both banks. Thats what kind of confused me...so im just thinking if it keeps acting up im just gonna try to put mil illiminators on the rear when my ses light is off and see if that keeps it off.

2001NBMZ28

Look up the diagnostics for those codes at www.gearchatter.com too.

2K2WS6TA

iTrader: (2)

It's the rears, just slap in some sims and be done with it, if of course there are no other drivability problems.
If your state doesn't have emissions tests (visual or sniffer) then get rid of the cats, sounds like they are going bad, and aren't cleaning the exhaust like they should

DomesticLS1

Will the sims make my car run alot better? I live in fort worth, texas were its really hot and it seems on hot hot days my car dont run as good but once the weather starts cooling down I can tell a world of difference.

Shallow Bay

iTrader: (3)

No it will only get rid of the SES light. The rear O2 sensors only tell the pcm whether or not the cats are functioning properly.

Shallow Bay

iTrader: (3)

Also, is it possible you received two bad O2 sensors? I would take them back and have them replaced under warranty and then go from there.

DomesticLS1

I dont know whats goin on. This is the third day straight now and my ses light hasnt came back on and Ive been punchin it every where to see if I could get it to come on. I dont know what the deal is, im still gonna throw me some mil eliminators in the rear.

02 BLK WS6

iTrader: (11)

If you are still f'ing with this try cleaning the MAF with carb cleaner. PM for more details. I have p0137&p0157, cleaned the MAF and it runs like a raped ape.