a loose belt or a seezed pully could do it or your ac pump could have seezed up that is common with fords and or the belt some belts just start squeeling for no reason
whats the problem for my 94 ford van engine high and low idle
does the engine have a carburetor or is it fuel injected? A carbed engine has mixture screws along with a base idle screw, a fuel injected engine the idle is computer controlled.
If your engine has a carburettor turn the idle adjust screw so the idle is at the proper speed. If your engine has fuel injection the ECM controls the idle.
The idle speed is computer controlled
throttle body or idle air control value
A bad IAC (Idle air control valve) or a vacuum leak or both.
The engine is EFI so the idle setting is computer generated. You'll need and engine programmer to change this setting.
The idle speed is controlled by the powertrain control module ( computer )
sounds like a bad idle control sensor
750 rpm
ford focus stalling at idle but not cutting off the check engine light is on please help so i dont get rip off thanks
engine idleing to slow turn up your idle to 1500 rpm at idle drive safe