icv???

[325guy]

I just got the car so nothing has been done to it. I haven't really drove it but home so I don't know the history on the car....

My car is idling around 1100-1200 rpm's but when I disconnect the 3-wire connector from my icv, the car dies. I thought it was suppose to idle up higher than normal.

I checked the 3-wire plug, with the key on, with an volt meter and I am getting full voltage on the middle wire and half voltage on the one side but only 1.6volts on the other side. I checked the ohms on the icv itself and it seems fine (36 ohms on the middle and 18ohms on the outside pins)

I was thinking my old Mercedes jumped up when I disconnected its icv ??????

[k.sidlosky]

no bmws just die or atleast the older ones same goes for the old vw's check the voltage to you tps see if it varies when you open the throttle(.5-5v) or vise-versa

[325guy]

Let me ask you this, with the car running, what should happen to the idle when you remove the oil filler cap???

The rpms on this car drop down to barely running. I dont think this is right??????????

[94BMW325i]

Why wouldn't the rpm's go down? I thought it would cause a vacuum leak.

[k.sidlosky]

I think I may be confused for the acronym icv do you mean idle control valve or intake control valve?

[325guy]

idle control valve

[k.sidlosky]

spray some eather in the intake and see if the idle returns to normal for a moment if so you have a vaccum leak somewhere if not then I'm stumped for now

[silversled]

probably the accelerator pedal or the linkage assembly is binding/stuck...grab the throttle linkage in the engine compartment with the engine running and operate it manually...see if something doesn't change. You know, try to rev the engine by hand inside the engine compartment and see....could be nothing more than some WD-40 and a rag...

[AlpineSixAndSeven]

Originally Posted by k.sidlosky

spray some eather in the intake and see if the idle returns to normal for a moment if so you have a vaccum leak somewhere if not then I'm stumped for now

... never heard of THAT method... easyer way is to take a can of carb cleaner and spray around all the vacuum lines(WITH the engine running) and around all the intake hoses if the RPMs rise you found your leak!

[325guy]

How many vac. lines would there be? .....I dont have a manual yet !!!

[k.sidlosky]

hit up autozone and get one I always thought eather was the same thing as carb cleaner/starterfluid oh well just spray the small hoses coming off the intake manifold