94camm

hey everyone, seems like since i have replaced the exhaust manifolds with headers my O2's keep going bad, i have replaced each side twice which is 4 senors in the last 2 months, getting kinda of expensive. Is there any reasons for this, also have replaced the spark plugs twice. If anybody could help me out or have any ideas please let me know. Thanks

staringback05

iTrader: (8)

check and make sure you dont have any exhaust leaks, thats letting unmetered air in....check the fitment and make sure their not banging around, and lastly check the wires themselves

01Z28M6

The ceramic coating on your pacesetters will initially damage O2 sensors. It is recommended to either plug the sensor holes or use old sensors for a while. Obviously you will get a DTC while the O2 sensors are out and/or disconnected with the first option. The good news is the problem should go away after a while because the ceramic inside the headers apparently doesn't out-gas for long. Disclaimer: I am just repeating what I have read from other posts regarding this problem.

jimmyblue

iTrader: (11)

If you're replacing them based on heater codes, that's
just bitching; don't encourage it. If you are seeing
real low-RPM, low-throttle mixture problems from it
then that's another story.

Look at modifying the present set as I've seen here
recently, opening up the slots in the sensor to let
more gas through and gain heat in the element.
Also consider wrapping the lower part of the header,
the collector at least, for a little more help. Too much
surface area cooling the gas, not enough gas heat and
not enough heater power.

94camm

the fitment of the y-pipe isn't the best, its bangs around underneath under acceleration, could that be damaging to the O2's when they are banged around a little?

orangeapeel

iTrader: (18)

Sounds like it is time for a poly mount or 2.

98Camarod

iTrader: (43)

Did you use extensions or did you make your own? That y pipe banging makes the knock sensor go crazy. I got tired of it and bought td's. Made the extensions and have had no problems. As long as the connections are tight and heat shrinked there should not be a problem.

94camm

Yeah, I made my own extensions and did heat shrink them, but after replacing them every other week its a pain in the *** to keep doing it so my extensions from summit should be here by tomorrow, i'll see about fixing the y-pipe and hopefully I won't keep having this problem. Thanks everyone

MavrikTA

iTrader: (27)

Im having a problem with code P0135 for the heater circuit. Are you implicating that there is nothing actually mechanically/electrically wrong with the sensor, just that it needs to be "opened" as you put it? If so, Im taking the sensor I just boutght back!