my mac headers are burring up the drivers side 02 sesnor ever 3 months. and i am starting to get a little pissed about it. What can i do to stop it from burning it up. Can i simualte it. i dont know what to do

 

If its the pre-cat sensor, you can't "simulate" it.... the PCM needs the pre-cat sensors to control the engine's A/F ratio. If its the after-cat sensor, you can replace it with a simulator.

How are you "burning" it up? You mean the wires are burned? Or is the sensor itself failing in some way?

 

its the pre cats. the sensor itself failing. like it will just go bad put up a ses light and the car will run like total utter crap till i put a new one in

 

r they ACDelco's? heated 02's? i have mac headers and the HTS coat and they get damn hot but never had a problem like what ur talking about? what kind of SES light and how do u know they r really burning up?

 

they are the 02's str8 from gm. The code is left 02 sesnor. may i just have it in the wrong place? There is another hole with a cap in it right under the oil pan.

 

huh? r u talking about where is the 02 sensor supposed to go? at the end of the headers right before the ypipe..on the headers

 

thats where i got it. right after the header meets the hpipe the right side i have never had a problem with


and no one at gm can tell me y its doin it. it happens evey 3-4 months

 

are your running an off road y-pipe or cats?

Have you checked your plugs to see if your running too lean?

Mike

 

one cat. stock h pipe and the plugs are perfitic

 

I wonder if your cat is clogged, and is causing in increase in heat.

Well you can get some o2 exstenshions and have your shop weld a new o2 bung(s) farther down the pipe if it keeps it up (but it would interfear with your readings). But this don't sound right.

 

yea tell me about it

 

What is the EXACT trouble code? There are several codes for each sensor, some dealing with the heater element, some dealing with how fast the sensor switches, etc. If you give us the EXACT code, we might be able to help you. There is no code with the description "left 02 sesnor".... they all include more info than that.

 

left 02 lean

 

see if you keep burning up that left o2 sensor, and its getting that code, Im going to trust the PCM and say your car is running to lean. It would really increase the heat going into the exhaust. Which could lead to this freak issue your having. now the issue is tracking down if this is a bad injector or a simple fix.

Mike

 

best way to check injectors?