Clean your MAF now!

[kc944]

Hi,

Just thought I'd share my experience...

ever since I first got my '98 996 C2 I've felt that although acceleration was very strong up to about 4500 rpm, after this point accelearation dropped off as the revs increased. The effect was always very smooth no spluttereing, no CEL light, just a steady drop in acceleration as the revs climb.As time has gone on it has gradually got worse, this morning I went for a test run, foot to the floor in third gear, as the revs climbed the acceleration began to drop off as usual but for the first time the revs would not pass 5000 even with my foot buried in the carpet!!!

I had changed the fuel filter recently which hadn't helped so today I decide to try cleaning the MAF. I simply removed it, gave it a good spray with electrical contact cleaner (not proper MAF cleaner) let it dry and put it back in. I can honestly say the result is amazing! the drop off in power at high revs is COMPLETELY gone. The car now pulls like mad all the way from 1000 rpm to the red line with no hesitation. Throttle repsonse at low revs seems crisper also. The MAF didn't even look dirty, the wire inside the MAF (visible through the slot) was however slightly dull compared to being shiny after I cleaned it.

So this is what a 911 is supposed to be like! My car has NEVER driven as well as this, I wish I'd tried it alot earlier!

[wyovino]

Sounds like a good idea. Is there a DIY here somewhere?

[belleriver]

yes, RennTech.org Forums _ 996 (Carrera) - DIY _ Mass Air Flow Sensor

You should clean your idle control valve once you are in there. check out the thread "996 Stalling after start-up"

I cleaned both last time mine started idling rough and it does help.