Okay a couple months ago i installed long tube headers and exhaust. I used my old O2 sensors with home made extentions it ran fine for a month or so and then started to get misfires and sputtering at stop lights and under loads and the SES lights would turn on and off after a few blocks and was getting on 15mpg. I checked my wires and connections i burnt through two spark plug wires and melted a connector on my o2 sensor on my right side so i replaced spark plug wires and got extentions for headers and new o2 sensors i even replaced spark plugs, SO new spark plugs and wires with heat shield boots and new extentions and o2 sensors, been driving around for a two weeks with no SES lights or misfires and got upto 22mpg, and then just this week got an SES light on and these two codes came up (13) left oxgyen sensor Fault, and code (63) right oxygen sensor ERROR, and the ses light comes on just for a moment and then turns off and the engine starts to sputter when getting up to 30 mph but then get smooth and runs fine.

Also replaced the fuel pump and filter so great fuel pressure

**any suggestions will help**

 

so you got NEW o2 sensors? did you burn through them again? make sure you didn't burn through your plug wires again too.

what brand of o2 sensors are you getting?

 

I baught new Bosch o2 sensors from Oriely's, and no it didn't burn through them and my wires are fine

 

that could be the problem...i installed bosch's on my car and she didn't like it too much, lol. i emailed bryan and pcmforless.com and he told me our cars just don't like bosch O2 sensors and that i should go with replacements from GM. did that and haven't had an issue since.

to check it, unplug your o2 sensors and see if it runs a little better

 

ok will check it out i'll let you know this weekend

 

Hello, I also had some problems today with my camaro, it studders and has no power undtil you step 3/4 throttle and up then it pops and pulls fine, but under low load it studders. No lights or codes have come up, but when you stand behind the car it sounds like it has a pretty lumpy cam and smells ritch. Would this probably come from a o2 sensor stuck wide open? The car has new plugs and wires.

 

Solomon at lt1pcmtuning.com also said to stay away from bosch o2 sensors. I've had good luck with denso

 

this is an old thread. should have started another with your issue. check your fuel pressure. low fuel pressure can cause a rich condition. pull plugs and see if they are fouled.