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Vibration during initial idle only


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My 2006 C2S has a vibration during the intital high idle period at startup. I always wait for the high idle to go down to normal before driving the car. As soon as it kicks down to its normal idle the vibration is gone. The car has been like this since I've owned it, but it did seem more noticeable the last time I started it. Is this normal? If not, what could it be? There are no fault codes present. I haven't used Techron (not sure if I can get it locally) but, if I can find some, I might put it in the last tank of gas of the season before I change the oil. Additional information, in case it makes a difference: the car is a garage queen with less than 16,000kms.

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  • 2 weeks later...

My 2006 C2S has a vibration during the intital high idle period at startup. I always wait for the high idle to go down to normal before driving the car. As soon as it kicks down to its normal idle the vibration is gone. The car has been like this since I've owned it, but it did seem more noticeable the last time I started it. Is this normal? If not, what could it be? There are no fault codes present. I haven't used Techron (not sure if I can get it locally) but, if I can find some, I might put it in the last tank of gas of the season before I change the oil. Additional information, in case it makes a difference: the car is a garage queen with less than 16,000kms.

Things I would look at if it's not just a cold engine warming up. My car stumbles a little when cold so if that's all it is not to worry. If the car isn't hesitating when you accelerate not sure you have any problem. Beyond that you might try cleaning the MAF with a can of MAF cleaner and clean it. .... I use the CRC stuff. Computer....disconnect negative battery cable for 2 minutes and reconnect. (reboots the cars computer).....I suspect a little cleaning and/or battery disconnect will solve your problem it you really have one. There are some good DIY's on the MAF removal and cleaning procedure so if you have never done it I suggest you read them. .

Edited by dphatch
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This is absolutely normal. My car does the same thing. It depends on how cold the car is when you start it. Porsches like to be driven!

I think 3000 miles per year is the minimum. All sorts of funny stuff happens to these cars when they sit from moldy air conditioning to ruined wheel bearings to flat spotted tires which shake the crap out of everything. If these cars are well maintained they can literally go for ever. It is just not cheap. However, I am beginning to think that in the long run the cost is less if they are driven. With modern lubricants, paints, paint protection film and detailed maintenance which most of us do ourselves because it is FUN, 911s weather beautifully. People are always surprised when I tell them my car is an 06. Every last one of them (except 911 experts) think it is brand new. If you do not love driving these cars I'm not sure why you would own one. Magnus Walker has absolutely the right attitude. (a Brit by the way)

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