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Ford Fairlane AU heater not heating car 

 

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 Post subject: Ford Fairlane AU heater not heating car
Posted: Sat Aug 13, 2016 10:32 am 
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Location: wauchope
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Hi there need some help with this issue. (Heater) These are the things I've done ...... changed the thermostat -Heater tap- super flush with new coolant. Problem still there.... Fan speed works fine low - high (fan inside the car) won't change between temperature cold 16c to hot 32c the numbers change but not temperature. ....so I've removed the dash ..... it seems it might be the flap on the box that closes when you change temperatures.... would there be any other isues that might be the problem. ..thanks Terry help
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 Post subject: Re: Ford Fairlane AU heater not heating car
Posted: Sat Aug 13, 2016 10:02 pm 
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blocked heater core??

 

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 Post subject: Re: Ford Fairlane AU heater not heating car
Posted: Sun Aug 14, 2016 12:06 am 
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Make sure the vaccum hose is firmly attached to the heater tap. Does it get any warmth or completely stone cold? If completely cold, would expect a blockage somewhere in system stopping the coolant flowing into core.
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 Post subject: Re: Ford Fairlane AU heater not heating car
Posted: Mon Aug 15, 2016 3:06 am 
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I also forgot to mention that i also flushed the aircon systerm and it came out clear running water (as i flushed it by conecting the garden hose and ran it slow) also the heater tap hoses that conect to aircon run hot (in and out)so does that mean there would be no blockage in the heater core? Thanks Terry
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 Post subject: Re: Ford Fairlane AU heater not heating car
Posted: Mon Aug 15, 2016 4:21 am 
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You can't flush the aircon system with the hose, completely different. If you have flushed the coolant with the garden hose you want it to run at flat out, to flush the system. Turn heater on 32 degrees & run hose flat out while engine idling(start engine from cold) till old coolant removed, then refill. If heater still not functioning after that, you must have some other issue. If vehicle is on LPG hoses are not routed correctly.
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 Post subject: Re: Ford Fairlane AU heater not heating car
Posted: Mon Aug 15, 2016 8:18 pm 
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Some good clues here:
pantherman70 wrote:
also the heater tap hoses that conect to aircon run hot (in and out)
pantherman70 wrote:
it seems it might be the flap on the box that closes when you change temperatures

 

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 Post subject: Re: Ford Fairlane AU heater not heating car
Posted: Wed Aug 17, 2016 7:50 pm 
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Thanks to everyone who helped.... found the problem as I thought it is the powered mechanism that turns the flap from cold to hot. Does any one know if you can just purchase that part or do I need the hole box. Thanks again this is the best sight for us Ford fans.
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 Post subject: Re: Ford Fairlane AU heater not heating car
Posted: Wed Aug 17, 2016 8:21 pm 
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Blend door motor. Possibly can still get but i suspect they may be discontinued so id be guessing second hand parts.
Sometimes the flap that directs the air temp can break from the blend door motor itself so you wont know 100% until you de gas the system, pull out the dash and heater box and have a look inside. This happened on my EB.
Its a prick of a job.
Whilst its out if you can you may as well look at replacing the heater core and evaparator as they may be getting fatigued with age anyway.

 

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 Post subject: Re: Ford Fairlane AU heater not heating car
Posted: Thu Aug 18, 2016 4:49 am 
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I did take the dash apart and I removed the blend door motor and I moved it back and fourth you could here the clonk noise so I thought that part was good ...so what I did is place it in the middle just to see if it would blow hot air and then conected the blend door motor and put the dash together and it blew hot air so I think I will need the blend door motor replaced everything else seems to be perfect. Thanks again everyone for your help .
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