Verify that the idle micro switch is properly adjusted and that the throttle cable is not binding. It sounds like the throttle is not returning completly to the idle position and engaging the micro switch. You might have to either-both lubricate the throttle cable and spool, and readjust the idle micro. If it starts right up cold then the cold start valve and system would appear functional. It does not control idle speed directly. Another remote possibility is that the air flow sensor plate is not centered and is rubbing the side of the venturi. This is a delicate adjustment. To inspect remove the air filter and look for rub marks and GENTLY move the sensor with a finger. It should move smoothly without rubbing the sides. Do this with the motor off! Verify that the 3 brass adjusting screws are LIGHTLY seated closed, they are not used in this application, the idle speed motor contols idle air flow. David Teitelbaum vin 10757 --- In dmcnews@xxxx, debruin@xxxx wrote: > I'm looking for some advise on a small problem I have. Ever since I > bought my D in june last year it always starts at about 3000RPM when > the engine is hot. When I start him in the morning, everything is > fine. But when I drive to the gasstation ,for instance, and start him > up after I filled him up, it really makes a lot of noise. He does > that for a few seconds and then settles down at about 700RPM. > Can someone tell me what is causing this? A fellow DeLorean owner > said it could be my coldstart valve. Is there a way to test this? > Every advise is welcome! > > Mads de Bruin > VIN#06881 > > PS: Does anybody know something about the history of my VIN number?