I had my car scanned to check out the codes that it was pulling. Just a standard scan from Auto Zone. Not very detailed.

Again my car is running terrible. Sputtering under load, misfiring, just running like a POS. My car has no cats or rear 02 Sensors. I just changed the plugs last week.

If you have any experience with these, give me some input.

Here are the codes:

P0412

P1642

P1641

P1133

P1441

Thanks men!

 

ok well 0412 is secondary air injection solenoid control circuit
and 1441 is evap emission control sytem incorrect purge flow. p1641 and p1462 fan circuit controls.P1144 HO2S Bank 1 Sensor 3 Rich or High Voltage
1441 is the most annoying code and most of the time the charcoal canister behind the left wheel well starts to break up and get little bits into the lines that go straight through the evap control valve and evap emmisssion canister purge solenoid valve. i will write more later.

 

Ok this is going to sound weird but have your tried changing out your gas cap, I actually had sorta similar issues where I had a very weird miss/sputter above 5500 rpm and the car would just fall on it's face and I checked every single electronic part related that I could get my hands on and it turns out my gas cap was just old and leaking pressure out under high load, and it was affecting performance on the top end.

Who would of thought, and after changing it out I noticed the car really came back to life and there were gains all around the power band, not to mention my mileage lol..

Good luck!

EDIT: Oh, I should mention leaking gas caps throw a lot of Evap codes here in Tucson, we get like 10 customers a day at Autozone with Evap codes and it's just a leaking cap..

 

Autozone has the capability of giving a readout of the codes pulled, and the possible causes and repair procedures. You'll have to ask for it.

 

I dunno about other Camaro's, but my car never sees over 5000 rpm. It's an A4, so maybe that's why. Plus I never beat on it that hard. But the gas cap still could be an issue.

They gave me the printed out defintions of each code. But it wasn't a very detailed explanation.

I'm hoping that someone can link one of the codes to my problem of the sputtering/missing. Also, what I need to do to fix the problem.

I remember them telling me about the pre-Cat O2 sensors. One wasn't working and the other was malfunctioning. Could this be the cause of my problem?

 

Here is the GM code chart: http://service.gm.com/gmspo/mode6/pd...c57P_FY_yE.pdf

I'd start with the O2 sensors.

 

Yeah I 2nd that suggestion, I'd definitely replace that O2 sensor for sure. I can get you the full info on those codes from my work (Autozone) if you want but they're usually very broad and cover multiple vehicles.

However I've never seen a bad O2 sensor make it impossible to rev past 5000 rpm, that leads me to believe you may possibly have either a really bad intake/vacuum leak somewhere, very worn spark plugs/fouled plugs, clogged injectors, or maybe an badly worn Optispark..

At this point I'm guessing but if I were you I'd grab a can of carb cleaner and spray around your intake and vacuum hoses with it running just to rule that out, if the motor surges at all you know you have a leak for sure.

I always start with the cheap and easy tests first, unfortunately I'm on my 2nd Opti and 2nd 4L60E lol..

 

Saturday I bought new O2 sensors and put them in. However, when I was under there I noticed that a spark plug wire was touching the header. The wire was white where it had been touching. So I think that wire was probably arching (sp). I tied that one back, changed my oil and let the car down off the rack.

2 days later and it runs better than ever. It hasn't missed one time since changing the O2 sensors and tying back that wire.

Thanks for all your help guys!

 

Might want to replace the plug wire that was resting on the headers. Once it burns, the insulation isn't any good. Eventually, its just going to find something else to arc against.... even moisture will have spark tracking all over the wire, from the burned spot.