Check Engine Light issue

[JFP in PA]

As long as the CEL is not flashing, it is safe to drive, but I would not be flogging the car until the issue was corrected.

[stateofidleness]

JFP I completely agree with the vacuum leak theory, but in my case it COMPLETELY fixed these codes. A failed MAF can cause bad readings and make the car adjust improperly, which may lead to odd codes (rich, lean, etc).

I know it seems unlikely, but maybe that's why the people posting these codes on the Internet usually never report back.. they may be chasing the wrong thing.

In my case (only offering suggestions here) is the MAF completely fixed my problem and even fixed my cold start "hunt". Car runs 10x better with the new MAF.

While it's not a cheap part per se, the amount of time, effort, lost weekends, owing friends favors, etc that I put into checking "everything else", I would have much rather spent the $250 up front and chased from there.

[JFP in PA]

I completely understand your position. I have to go by what I’ve seen and learned personally, and as such have not encountered what you did. We have had several cars in the shop that threw these codes and the owners replaced the MAF only to have the codes come back. When we looked at them, we found air leaks and the codes did not return. But based upon your and other’s experiences, I will have to open up to the possibility that a dying MAF can apparently cause the fuel adaption to change, which can definitely lead to the lean condition triggering the codes.

You live and you learn…………..

[Jager]

I had these same alarm codes not too long ago... Bad AOS.

Fullthrottle52,
Remove your oil fill cap while the motor is running (after it's warmed-up), what happens? Is the cap hard to remove? Does the idle drop (almost stall) after removing the cap?

[fullthrottle52]

Jager,

No it does not. I already removed the cap and had normal results, no problem at idle.

Im beginning to think it is a MAF or small vaccum leak.

I'll keep you informed as I get it checked.

Thanks for all the answers.

Thought I would send a pic of my new (used) boxster.