Quote:
Originally Posted by racepar1
Those sensors should have a constant ground, not something that is switched by the computer. If you wanna be sure and don't believe me then do an ohm test with the car off and the key out. If there is continuity to ground then I am right. Just because the wires run to the computer does not mean that the computer is actually controlling it. By adding an external ground the sensors can send more accurate signals and respond faster. The IACV and AAC valves are grounded to the intake mani throught their cases.
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I wonder why they get ground from the computer and not chasis then. The ones I can think of do have constant ground with ignition off because that is part of the trouble shooting check in fsm.The IACV is controlled by ground impulses from computer so a constant ground would mean it is on constantly. improving the computers ground might help also.
08-20-2008, 12:06 PM
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