Questions & Answers for: fast idle only when cold

up and stick. What is wrong? May be normal. When cold ,the bike should idle fast for a few minutes. If started hot, will idle fast for a few seconds. Cold idle should not exceed approximately 1800 rpm

...a fast idle when cold. After 15 seconds, it does go to fast idle (750 rpms). Test both the manifold air temp sensor and the coolant sensor. If either are out of range it can alter the cold start

1985 trans am idles to fast cold cold idle speed too fast on passenger side, you can adjust the choke idle, it is a little screw underneath the choke base on the quadrajet...if it is a quadrajet car

...fast, but as I drive it and the engine warms up it will idle correctly. Is there a way to make it idle slower from a cold start? From a cold start my sami idles really fast, but as I drive it and the ...

...fast idle speed screw, works off the fast idle cam which the choke adjustment sets, it works together by linkages. This is the raised idle speed setting you need to keep a cold engine running. First ...

...fast How do I turn the idle down old post. too fast hot or cold., this car has a ECU, brain, the brain controls RPM full time hot, not you unless you step on the throttle. only IT does. the ECU. if ...

...fast idle when cold, or get stuck the other way, and have a too fast idle all the or regularly take its time slowing down after you take your foot off the gas. An engine temp sensor can also cause a ...

...idle fast while cold but , 2000 rpms is a little higher than normal. May want to check the engine coolant temperature sensor for proper voltage and the coolant level. Also, check for small vacuum ...

fast idle when starting cold engine Should idle fast when cold for around 60 seconds. Does it stay idling high ?

FAST IDLE SPEED ADJUSTMENT ON A 1985 MERCURY GRAND MARQUIS COLD IDLE SPEED IS VERY FAST AND WARM IDLE SPEED IS SLIGHTLY FAST COLD IDLE SPEED IS VERY FAST Do you have any codes? Did you change an air ...