Why is my truck idling fast?
Why is my truck idling fast? In modern vehicles, engine idle speed is most often controlled by the idle air control (IAC) motor. When your car's throttle is malfunctioning, this can cause your car to stall or idle high. Often this is a result of dirt buildup in the air intake. Other times it can be a problem with a cracked intake tube. Why is my Ford F150 running rough at idle? Really, your F150 will be running rougher at any RPM, but a misfire will be most pronounced at idle. Spark Plug Wires – While not every model and...