stevew30

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About stevew30

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    Shank's Pony

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  • Car Make
    porsche cayenne
  1. cold start problems 2004 cayenne s

    Thanks TD. It is a 4.5 v8 engine. thanks for the advice, will get the garage to check it out. Cheers, Steve
  2. I have a 2004 Cayenne S which has a number of problems when startingon cold. All the garages I take it to just plug in the computer and say it is reporting no faults, so therefore there is no problem !! The problems are: 1) sometimes it just will not start. I turn the key and the engine turns but it will not fire. It takes about 5 - 10 attempts to start it, and when it does, massive amounts of smoke come out and it smells of petrol 2) there is a problem with the cold idle speed. It starts at 1000rpm and then settles at 600rpm. however sometimes it wil drop and bounce between 200rpm and 400rpm. This causes it to stall in slow moving traffic...but it is an auto !! 3) the engine runs very lumpy when it is cold - almost like a misfire. I have had the coil packs replaced which seems to fix it for a short while, but then it starts again. When the engine is warm, it runs very smoothly and is just fine. It is just the first 10 mins or so that are a problem. Any help appreciated ! Steve