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post #1 of 3 (permalink) Old 08-06-07, 03:57 AM Thread Starter
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confused Fairmont Ghia 1995 - Heater Problems?

Really hoping someone can help me with this most frustrating problem. Heater tap has been replaced with new one, line in and out flushed and flow appears ok. Vacuum to heater tap ok, operates open and shut. Car temperature at operating level, did check with a ford mechanic. All symptons lead to a flap blend motor, so a new one was purchased so we could dismantle dash and re assemble back in one day. The old flap blend motor tested open and shut ok. So we decided after all that we would put the new one in. I might add we tested the new one on before and after it was installed, and put dash back - still no heat. We then purchased the heater mode or dash digital read out, both unitstested ok. Both units put through the start up and fault finding mode. All this work carried out by two very compentant auto electricians. I might add that component is no longer available through Ford so it was purchased from wreckers. After a lot of testing the old one put back in - still no heat.
Is anyone able to offer any suggestions. It gets very cold in Tassie in winter!!!

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post #2 of 3 (permalink) Old 08-06-07, 04:51 AM
Join Date: Feb 2001
Location: Bibra Lake Western Australia
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Re: Fairmont Ghia 1995 - Heater Problems?

Some posibilities:

a) Dual acting thermostat stuck open so poppet valve is permanently shutting off bypass and heater system? Do hoses each side of tap get hot?

b) Coolant not replaced using correct bleed process so their is an air lock in heater radiator.

Regards Blue
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post #3 of 3 (permalink) Old 08-07-07, 04:37 AM
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Location: NSW Australia
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Re: Fairmont Ghia 1995 - Heater Problems?

Hi Ronnie
Is the actual door that connects to the blend door motor ok? I've seen these doors dislodge and/or the plastic shaft it pivots around break or fall down inside the heater box in a number of different Ford models. This causes the door to stay in the same position even though everything else works fine.
I will also add that if your recir/fresh air door shaft is broken (which happens in 9 out of 10 Falcons) it will take forever to blow hot air in winter because it will constantly be drawing fresh cold air from outside. The default position when they break is fresh (outside) air. In summer it will also take forever to cool down the cabin. cheers
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