Quote:
Originally Posted by JamesDean
The ICV mechanism can get gummed up over the years. Even cleaning the thing did not help. I hooked up the ICV to my bench power supply and could observe the shutter stuttering as I varied the voltage. A replacement unit was nice and smooth.
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Thanks!
If I have nothing better to do, maybe I will give my old ICV valve an "oven" bench test. That is warm it up in an oven a bit and then see if it starts to have "medical problems" with breathing and so forth (old age!)
That is... The problem could be due to the part itself warming up and not from the engine or an engine temperature sensor heating up - something I did not check.
Also now that I think of it... Perhaps at first cold air is entering the ICV... Then as the engine warms up, the air coming from the Air Meter could be warmed up and then you would get warmer and warmer air shooting into the intake of the ICV - Could cause the gradual warming problem with the part.
So an additional test might be to point a hair dryer into the ICV when bench testing. (Don't let the wife catch you borrowing the hair dryer of course
.)