Yesterday on my way home from a quick errand, I threw a CEL and the flashing cruise light. When I got home, I read the codes via my Cobb AP. There were a lot of codes, mostly having to do w/ the o2 senser reading too low or too high. I cleared the codes and reset the ECU. No CEL's since yesterday afternoon.

The car drives beautifully, but struggles w/ idling ESPECIALLY when cold. A cold start and the whole car is shaking (feels like it's going to stall) but the tach doesn't show erratic RPM's??

I think I'm running very rich (have DW 750's--see sig.), but otherwise I don't have a clue. Thanks guys!

 

Do you have the exact codes it threw? From your post I would guess that your front O2 sensor is going out.

 

definitely sounds like the o2 sensor is pooping out

 

Always post what codes you threw. Will make the resolution come much quicker. But if its an o2 sensor, SUCKS TO BE YOU! Jk, I've through plenty myself.

 

Yeah, I wish I had saved the codes. I checked my Cobb AP to see if it stored them (it doesn't) but the next CEL that comes up I will write EVERYTHING down!

Ok, so if it's the o2 sensor...what do I need to do? Is that just getting a new one and installing it?

 

Yep, pretty easy process. Make sure you talk to Manny at Mastro, not Joe. Joe tried selling me the sensor for $220. I got it for far less from Manny, but then again, I've got 5 from him lol.

 

After install, just reset the ecu again so it can reset the fuel trims and shtuuuff.

 

Ok, cool. I hope that's the issue.

 

this doesnt necessarily mean the sensor is bad it could mean it's out of it's range to rich/to lean. do you have a wide band in your car????

 

Nope, don't have a wideband. Obviously my car needs to be checked out and the o2 sensor tested. What's the best place to get this done?