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Old 08-30-2011, 08:15   #1 (permalink)
TKO
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Help! A/c and heat trouble!

Ok I have a 1999 ford windstar lx with front and rear a/c and heat. My blend door itself has been discovered broken and the actuator was fine for the front. The blend door is still there but the connection between blend door and actuator is broke. My rear a/c does not work but my heat does. I tore the paneling off the rear a/c and heat and the blend doors and actuaries work fine. My evaporator coil does not get cold. My car holds freon and the pressures are fine. I've hears the orfice tube plugging. But the pressures are fine. I'm thinking either the control panel I bot working because from my understanding the coil does not get cold until the "a/c" button is pushed. I am looking for a ductwork schematic of my van, ways I can switch from front heat and a/c. And any reasons why my rear a/c does not work but the heat does. Thank you guys so much
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Old 08-30-2011, 21:26   #2 (permalink)
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Re: Help! A/c and heat trouble!

There's a blend door for the rear unit too. That's probably where the problem lies.
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Old 08-31-2011, 07:42   #3 (permalink)
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Re: Help! A/c and heat trouble!

i already checked the blend doors in the rear, they both open and close on command with the controls
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Old 08-31-2011, 21:26   #4 (permalink)
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Re: Help! A/c and heat trouble!

I read your post too fast to notice. Sorry about that. Since the rear evaporator isn't getting cold, There's likely a problem with the expansion valve. The pressure readings aren't easy to get to the rear. The front is combined with it and what you're reading is probably only the front system.
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Old 09-01-2011, 07:59   #5 (permalink)
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Re: Help! A/c and heat trouble!

Quote:
Originally Posted by Bert View Post
I read your post too fast to notice. Sorry about that. Since the rear evaporator isn't getting cold, There's likely a problem with the expansion valve. The pressure readings aren't easy to get to the rear. The front is combined with it and what you're reading is probably only the front system.
The compressor stays on, is that normal? And for the front a/c and heat which direction should the blend door be for a/c and which direction should It be for heat? Because I don't have front heat in the winter and it's really dangerous and hard to see
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Old 09-02-2011, 21:18   #6 (permalink)
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Re: Help! A/c and heat trouble!

I don't remember which direction for heat but if you can move it, you'll know what it's set at when you turn the system on.
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Old 09-06-2011, 08:18   #7 (permalink)
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Re: Help! A/c and heat trouble!

I a have tried to stick open and close the blend door to the front, I put a piece of sheetmetal to act like a blend door for the front and I have stuck it open. I don't see a change. Is it all the way open or all the way closed no in-between? Like it's not Galway open for all heat or all a/c?
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Old 09-06-2011, 19:18   #8 (permalink)
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Re: Help! A/c and heat trouble!

Have you taken the plenum out to put a piece of sheet metal inside?
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