First Cel Codes

[jibbles44]

So for the first time i got a cel on my 98' 986. I went to a dealer and they read codes 1127 / 1129 which state the fuel air mix is to rich.

The past few times I've started the car up , I have noticed that there was a slight hesitation when tapping the gas in neutral, but after no more than 5 mins of running, any hesitation went away. I had them clear the codes, and am awaiting to see if he light comes back on.

I have done some searches and find people replacing MAF and fuel pressure regulators / injectors, is there a best plan of attack when faced with this problem?

*Update* - After about 30 miles driving it after the codes were cleared the cel came back on. I am guessing it isn't a single fuel injector problem due to both cylinder banks reporting a rich air/fuel mixture. What is more likely, a MAF or fuel pressure regulator? Any Input?

Edited June 10, 2010 by jibbles44

[jibbles44]

Well even though no one has responded here is another update, I unhooked the MAF and ran it for 10 mins, and it ran very very well. BUT after hooking the MAF back up, and starting it and then letting it sit, the next time i started it up , the hesitations resumed. SO i am assuming a bad MAF, and from the looks of it the part isnt cheap so i will attempt to clean it first, then fork over cash for a new one.

*UPDATE* - Cleaned the MAF, and no CEL for over 75 miles, no hesitations, etc. Maybe if anyone else has an 1127 and 1129 this will help solve their problem.

Edited June 14, 2010 by jibbles44