There is no control valve temp is set by a blend door.
To connect a heater control valve on a mark 5 fiesta all the terminals must be correctly connected. The color coding is used to ensure that the terminals are correctly connected.
I have a 94 Astro but the heater control valve should be in the same location. Look under the hood on the passenger side. There are two heater hoses behind the coolant reservoir and windshield washer reservoir. The hoses attach to the heater control valve. The valve has a round vacuum actuator on the side, and two more heater hoses leave the control valve and go into the heater core housing. Cost for the valve will probably be somewhere between $50 & $70 To replace it, remove the coolant reservoir and the windshield washer reservoir. Remember, or mark, the hoses for the washer if you have a rear washer. The electrical connections only go on one way. Remove the clamps securing the front heater hoses and remove the hoses from the valve. Remove the clamps holding the heater hoses coming off the back of the valve where they are attached to the heater core. These two hoses are factory attached to the valve and the new valve (from the dealer) comes with the hoses attached to the rear of the valve. The clamps are back in a small space behind the valve, rather hard to get to. We pulled the bracket with the three square relays situated above the hoses to allow easier access. Install in reverse order. Good luck.
No
No
No automatic choke, has fuel injection. IAC valve (Idle Air Control) valve controls that
Do you mean that it doesn't idle good? If you are having idle problems and everything else checks out, then I'd say it's the IAC valve (IDLE AIR CONTROL) valve which is easy to change on the second generation Marks, on the top of the intake drivers side.
On the driver's side valve cover towards the back of the engine, on top.
May be the proportioning valve by the master cylinder
Follow the tubing from the master cylinder and it runs into the proportioning valve.
cruise control switch
Malfunction with the Idle Air Control valve.
Hope you have small hands and the right tools.