I have a 2002 QX4 that threw a P0506 error code. I changed the IACV and the problem went away initially while the car was warm. The initial problem was stalling at start and in gear while cold, rough idle etc... Now it is still stalling at start up but goes away when warmed up. Any ideas? Thanx
P0506 Idle control is lower than expected
The MAF (mass air flow)has been known to cause driveabilty problems,this has to deal with a poor ground at the MAF, you can repair by soldering a wire to ground at the terminal of the MAF.
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