Best Answer

Look near or behind the alternator. The valve that controls flow of coolant to the heater core on my 1987 Aerostar is located on the left wall of the engine compartment. I imagine the 1991 is similar. Trace the heater hoses from the engine/water pump and you will find it.

User Avatar

Wiki User

โˆ™ 2005-10-02 15:50:24
This answer is:
User Avatar

Add your answer:

Earn +5 pts
Q: Where is the heater control valve on a 1991 Ford Aerostar?
Write your answer...

Related Questions

Where heater control valve on a 1991 dodge dynasty?

There isn't a water control valve. The airflow is directed around the heater core by a door to control temp.

Where is the heater control valve located on a 1991 Plymouth Voyager?

The heater controlvalve is located on the firewall just to left of your powerbrake booster.It will have two hoses going to it,one goes directly into firewall and the othoier hose will be attached to your heater control valve,then spliced to your firewall! Hope this helps.

Why does the dual-zone front only heater only put out heat on the passenger side in a 1991 Buick Regal?

may be your heater control valve

What is the probable cause if a 1991 GMC pickup heater suddenly stopped blowing warm air?

Heater Control Valve IF there is Vaccume going 2 it.Butt feel both heater hoses & if the Valve is bad - only one hose will b HOT.

1991 Honda Accord SE The climate control only blows hot air even if you turn it to cold?

either your heater control valve is bad or you heater control switch on your dash is broken pull the knob of and see if it is cracked.

Where is the AC low side valve for a 1991 Ford Aerostar?

as far as i know it on the vac by the firewall left side

On 1991 acura integra were is idle air control valve located?

The 1991 Acura Integra idle air control valve can be found on the firewall. The valve will be on the drivers side of the firewall.

On a 1991 Ford Aerostar with Dual Heat why would you have water running on the ground on the passenger side?

This is an indication that your heater core is leaking. To stop the leaking you will have to replace the heater core or stop using your heater.

Where is the air control valve on a 1991 4.3 s10?

The air control valve on a 1991 4.3 S10 is on the engine. Kindly refer to your usual manual to see the exact point, where it is located. The Idle Air Control is attached to the base of the throttle body.

Where are the idle air control valve and the EGR valve on a 1991 Chevy Corsica 4-cylinder LS?

The idle air control valve is located on the throttle body, and the EGR valve is located on the intake manifold.

Where is the second heater core in a 1991 ford aerostar located - is the heater system a loop system?

remove the bench seat behind the drivers seat. remove the service panel from the interior panel on the drivers side.

Will the headlight from a 1991 aerostar fit a 1997 aerostar?

Too the best of my knowledge, no. The 1991 used a sealed beam and the 1997 used a halogen type.

Where is the idle air control valve on a Lincoln towne car 1991?

its on the trottle body

Why does the heat in 1991 Park Avenue function intermittently. When on it will sometimes blow hot but then cool down for no reason. Other times it will not come on at all in auto mode or otherwise?

1991 PA ???? Low coolant in the system,...... faulty vacuum door between the heater core and evaporator (A/C) core,..... bad heater control valve,.....

How do you fix the gas gauge on a 1991 Ford Aerostar?

how do you fix a gas guage on a 1989 ford aerostar

How do the hoses go on a heater control valveon a 1991 jeep Cherokee?

Hope this helps and is not to late.

What would cause no heater control or blower control on a 1991 Cadillac Fleetwood?

Check the A/C fuse, that's what happened on my '85.

Where is the idle control valve located on a Mazda mx6 1991?

The idle air control valve is located next to the throttle body. It is connected to the air cleaner hose on the top of the engine.

On a 1991 jaguar what is a code 89fuel?

Evaporative canister purge control valve circuit fault

Where is the idle control valve on a 1991 dodge caravan 3.3?

Inside the passenger side tire...

How do you make the heater warmer in a 1991 Honda Accord?

Make sure your heater control knob is not cracked, or it will just be slipping on the shaft. Also inspect the attachment where the control cable attaches to heater control valve (underhood). You can adjust the tension of the cable by pressing on the tin part that holds the cable sleeve in position. IF you have done the above, there are a couple of other possible faults: 1) Faulty thermostat (stuck open) 2) low coolant levels or other cooling system problem

Where do you find full engine schematics for a 93 Ford Aerostar van?

picture of engine of 1991 ford aerostar van

What is the fuel tank capacity of a 1991 aerostar?

21 gallons

Heater control does not work on 1991 Plymouth voyger. fan operates normally. control stays on defrost only will not switch to any other function?

can happen when vacuum line is disconnected . look under hood to right of heater hoses. one vacuum line goes to heater valve (gate)on heater hose ,the other should go past this to a small sized metal object the size of a small lemon. if this is disconnected only defrost will work. I HOPE YOUR 91 IS SIMILAR TO MY 93.

No heat in a 1991 Chrysler LeBaron good blower?

If the blower is good then the problem is coolant. Something is stopping the warm coolant from the engine from reaching the heater core inside the car. This might be thermostat, heater control valve, blocked heater hose or a blocked heater core. I would suggest letting the car warm up and checking the heater hoses (2) by hand to see where the hot water stops. If there is no hot water at all it is probably a thermostat problem.