Porsche Repair: porsche 944s2, air flow meter, rotary arm

Question
just wondering if you could give me any advise on my porsche 944s2 at 5000 revs it feels as if its starving for fuel doesnt do it when its cold the car splutters and feels like its going to die but then starts up again ive swapped the air flow meter with a second hand one and its still the same ive had a new oxygen sensor changed plugs leads cap rotary arm took it to garages fuel pressures are all right mixtures are right. running out of ideas cheers stuart

Answer
Hi Stuart,

I was just advised your question had been submitted but never answered.  Apparently, with the volume of questions, this happens sometimes.  Luckily, we don't have similarly unexplicable issues with our Porsches, right?  Oh yeah...your question...

I think you were on the right track with the air flow meter.  My experience is that the "meter", which is actually a doorway through which intake air passes and is measured, then metered...always gets it's share of crud and gunk accumulating on its parts, especially the hinges.  This causes the door to be hesitant or balky in its movements, which often translates to a feeling that the engine seems fuel-starved for a split second...just enough for your adrenalin to kick in...and then poof, all is well again.

Having changed the meter for another should at least have given you a slightly different outcome...and this is puzzling...but I'd re-focus on this at this juncture and see what I could see.

Dave