I have taken apart the throttle body, disassembled it and cleaned it. I have taken off the Throttle Position sensor from the throttle body while it is still connected to the ECM and the check engine light comes on (so I think the sensor is working, could still be bad though) I have done the same with the MAS and with the Idle Air Control Valve that is located on the throttle body. The Check engine light will come on when I disconnect them all and the engine will still be idling high. So I think the sensors appear to be good to the computer, but im thinking one is bad. The MAS will effect the idle some when I pull it out or disconnect it, but I think that’s normal. Its Hard to decide which one to buy fist considering there a couple hundred a piece. Thank you for your help.
have the same problem?
Thursday, January 8th, 2009 AT 4:09 PM