986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Need 2nd opinion on P1128 mass air flow sensor diagnosis

Douge1 · 06-13-2010, 11:18 AM

So I opened it again today and put a new air filter in and I actually pulled the MAF out of the intake and cleaned it again, no change but wanted to comment that the MAF looked very clean, neither the enclosed wire or the one on the side had a spec of dirt on it, albeit I hosed it down a few days ago. I guess I am expecting some obvious sign that it has failed. I can't order the part until tomorrow so still fiddling with it. Should I unplug it and drive it around the block? Also, it is throwing a P1133 now instead of the P1128 the first two times I scanned it. The car still runs pretty well minus the flat spot and occasional surging idle.

06-13-2010, 11:18 AM	#5
Douge1 Registered User Join Date: Jun 2010 Location: Chandler AZ Posts: 7	So I opened it again today and put a new air filter in and I actually pulled the MAF out of the intake and cleaned it again, no change but wanted to comment that the MAF looked very clean, neither the enclosed wire or the one on the side had a spec of dirt on it, albeit I hosed it down a few days ago. I guess I am expecting some obvious sign that it has failed. I can't order the part until tomorrow so still fiddling with it. Should I unplug it and drive it around the block? Also, it is throwing a P1133 now instead of the P1128 the first two times I scanned it. The car still runs pretty well minus the flat spot and occasional surging idle. Last edited by Douge1; 06-13-2010 at 11:20 AM.