You need a Ford heater hose disconnect tool. You need the one with a handle to get back into the tight area. You slip the U shape end of the tool into the matching grove of the heater hose and push and pull back and forth and it'll come loose. I'ld replace the O rings will I had it apart. When you put it back together, you just have to push it back on. Make sure it locks into place. Or you can do it without the tool..The best way, if you're sure the heater core is gone and you are replacing it, is to cut the tubes just on the outside of the firewall or just inside whichever gives you best access. The hoses are connected to the heater with special clips which makes connection easy but disconnection almost impossible. When removing hoses make sure to mark the hoses (which goes on top) for proper replacement. be sure to use new plastic inserts available at the dealer. Use a little Vaseline or liquid soap to lubricate the rubber rings so as not to damage them and allow them to slip on easily. Cutting the heater tubes will save you a bundle in not buying the special tool.
1997 van aerostar front heater blower guide
Before CHanging the Heater Core, have you tried flushing it? I have a 99' Jimmy and have to do this every year to get my heater to work.
bIG JOB Get a manual on your car from DISCOUNTAUTOREPAIRMANUALS.COM and see if you want to go to that much trouble.
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.
The heater core will have to be replace, it is not hard to do and the Heater Core is about $35 at the auto parts store. Good Luck
See previous question of same nature.
Misting of a windshield usually indicates a leak in the heater core.
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.
Sometimes changing a heater core can be a very big job. It is not changing the core that is hard, rather getting to it. Good luck.
you need a new car
how do you change heater matrix on fiesta
I am in the middle of changing a heater core trust me just get a new car cause it is a pain in the but and time consuming like hell.
(NO) that sez you can add a valve on the pump side.
resister is located on the plenum next to the blower motor under the hood
Heater Airbound? Heater control cable not working? Heater core plugged?
Yes, that would be a good idea given the age of the truck.
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Talk2DIY Automotive - 1986 Tires and Changing Heater Core was released on: USA: 14 August 2004
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