Why does my truck rev on its own?
Why does my truck rev on its own? It sounds like you may have a dirty or failing idle air control valve. This valve is controlled by the vehicle's computer and will adjust idle speed based upon other measurements such as engine temperature, intake air temperature and electrical system load or voltage. Why is my Ford Transit van not running? It has a flat spot with every gear change, most noticable 1-2 and 2-3 as thats when … read more Proprieter / Diagnostic Tech... Proprieter / Diagnostic Tech... Ford Focus 1.8 Tdci 2004 110,000 miles. When started engine hunts at...