A damaged or stuck-open PCV valve will allow too much air to go into the intake manifold, resulting in a faulty fuel-air mixture idling and a build-up of pressure in the crankcase, creating various types of oil leaks. And this, in turn, can lead to a host of other problems, includin...
An example of an Idle Air Control (IAC) valve: The IAC is seldom completely open or closed but remains constantly in motion; controlled by the PCM. The PCM uses input signals from the oxygen sensors, the throttle position sensor, and various other sensors to determine how much air should b...
P2104--2005 F250 SD 4X4 5.4 Triton 3 ValveTruck went into limp mode last week. Replace Throttle Body with new Throttle Control Actuator. I have had this issue every 2 years since 2010. It seemed in the past to be tied to the Throttle Actuator Control Valve on the Throttle Body. It di...