Rick's Free Auto Repair Advice

Posts Tagged: Duratec

Fix code P1506 on Ford

Fix code P1506 – Idle Air Control System Over speed Error If you get this P1506 – Idle Air Control System Over speed Error code on a Ford vehicle with the Duratec engine, don’t start with an idle air controller valve (IAC) replacement. This vehicle has a LOT of vacuum leaks and that can cause serious idle problems. Air leaks into the engine AFTER the MAF has already metered the incoming air. So the oxygen sensor sees a very lean exhaust. Since the vehicle is at idle, the computer tries … Read More


Custom Wordpress Website created by Wizzy Wig Web Design, Minneapolis MN