Quote:
Originally Posted by Mr.BigBodyBenz
What about how the pin closer to the radiator on the temperature sensor is only reading 4 ohms which is way out of tolerance according to what it was said it should be. Could the idle control module think the engine is cold the entire time it is running and just be keeping the idle that high? Oh and by the way I did another check. I checked how much voltage the idle control valve is getting when the engine is at 1500 rpm and it is receiving about 4 volts.
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The temp sensor can be a problem or another problem - do check that.
Then the actual test with factory specs for the ICV is amperage or mA, but that is difficult to do. Easier to pull the plug out a little and read voltage - see if that is changing or not.
But I don't think the Factory Service Manual has any specification for voltage? So don't know if 4 volts indicates anything.
Anyway in this case, a change in voltage/current might indicate the electronic Idle Control Unit is making the idle go up. No or little change might mean the valve itself is faulty.
I had a similar problem and wound up replacing the ICV. That fixed my idle.