The bad idling may be due to a faulty Throttle Position Sensor (TPS). Have the computer scanned for trouble codes to confirm before replacing.
Possible bad ignition switch
sounds like a bad thermostat even though it is replaced
want to know if my starter is going bad if
You probably have a bad alternator or bad wiring.
The most likely cause of a 1992 Ford Aerostar stalling while idling is bad spark plugs. The plugs should be changed and the timing checked to resolve the problem.
1995 ford ranger back-up lights stay on, replaced switch, how do you check for a bad switch
Code P0304 on 2000 Ford Ranger is: Misfire at cylinder 4 detected. May be cause by a bad spark plug.
Bad fuse?
The most classic symptom is erratic or rough idling.
Bad Starter....
Quit trying to start my Ford Ranger! Is your Ranger cranking slow (low battery), not cranking (dead battery, bad starter), cranking good but not getting gas (clogs, no gas in tank, bad fuel pump), not getting spark (plugs, wires, coil), or what?
had to replace mine on my 96 explorer ,it will start for a second then stop,rough idling,thought it was my timiing replaced it now it runs great. ----------------- Check the fuel pressure also.