After replacing the IAC and driving the for about two weeks, it began to idle very rough, (down to 200 rpm) but not stalling.
I rechecked the IAC and timing.They tested good. no codes present. I am leaning towards the EGR valve. How can I test it with a multi-meter?
I rechecked the IAC and timing.They tested good. no codes present. I am leaning towards the EGR valve. How can I test it with a multi-meter?
Sep 3, 2017 at 4:20 PM


