924Board.org

[Blue]

My 924S always judders and shakes when cold


it only happens below 3000RPM, no smoke no nothing

only judders abit and holds back abit, then when it's warm its perfect again
used it on a circuit the other day for 3-5 hours and it worked fine, using only 1l of oil in hot circumstances.... so th engine is ok

any one know what this juddering when cold might be?

thanks in advance
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If you don't succeed at first, skydiving is not for you

[ZV]

I'm not really sure, but my 924S is the same way during the winter. If it's below 40 degrees (Fahrenheit) then the car needs to be allowed to warm up or it doesn't have power. Once it warms up it's fine. You might want to look at the air temperature sensor(s). I'm not sure how to check them, but it does feel to me as though my car isn't running rich enough on a really cold start. (Like starting a carbbed car without using the choke.)

Aaron
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Shifting is an art, learn it, love it, live it.

1976 Porsche 914 2.0 - Driving Restoration.
1987 Porsche 924S - Daily Driver

[Porschephile]

ditto
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werd B.