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I have a 2004 Porsche 996 C4S with Tiptronic and I live in the UAE where the summer temperatures are +40C for 4 to 5 months.


When I start the car from 'cold' bearing in mind the car bnever really cools down here even though the car is always parked in a basement car park, after I have engaged drive and started to move forwards, the car sometimes feels like it might stall and has a momentary 'flat spot', after a few minutes the car's fine......


I've already changed the MAF, and no difference, could it be spark plugs or ignition coils or a combination of both?


Any help would be greatly appreciated

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My 2003 does the same thing. Replace the coils/plugs because it was running very poorly in a rainstorm, and it still occasionally misses for a few seconds after startup. Cleaned throttle body, no change. Need to get Durametric or whatever Porsche software on it to see what's out of range during those few moments.

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In 40 degree heat and 100% humidity I removed the throttle body off the car.....


After a thorough cleaning, I then reinstalled it and sadly it has not made a jot of difference..... :angry:

Edited by jemi
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  • 6 months later...
  • 1 month later...

This is what the the Variocam solenoid looks like on a Porsche 996:





Not sure what they are in your photo

That's odd. The one in your link is from variocam 3.4L but you said you have an '04, which should be identical to AWDGuy's photo, which is a 3.6L variocam+.
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  • 3 years later...

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