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Climate Control Problems (Air Conditioning, Heat) - All Cars

791 messages,  Last post on Aug 12, 2009 at 12:55 PM

You are in the Maintenance & Repair Forum. Your Host is mr_shiftright

What is this discussion about? Heating / Cooling


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#725 of 791
Re: 1994 chrysler lhs [bullman1] by nbelt
Nov 24, 2008 (6:28 am)
Reply

Replying to: bullman1 (Oct 26, 2008 2:13 pm)

found a new heater control on ebay for $40 put it in and it works. but now it wont blow hot air. guys at the dealer tell me theres a door behind the dash that opens and closes to allow the hot air to come through. they said $900 to $1000 to reair that because they would have to take the whole dashboard assy out. good thing i didnt blow $573 on that heater control!! i gotta guy working on this door thing but i dont know if that will work. i guess well see
#726 of 791
AC Compressor not engaging when switched to AC by fordf250xlt4x4
Nov 24, 2008 (12:06 pm)
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Hi anyone,
 
When I put the lever to MAX AC or AC it does not engage the compressor. It acts as if it's not getting electricity to the compressor. Is there a fuse I don't know about?
 
1990
XLT Bronco
351 V8
 
Thanks
#727 of 791
Re: 1995 Camry , expansion valve & dryer [roadszx] by securitya8
Nov 30, 2008 (10:14 pm)
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Replying to: roadszx (Aug 10, 2008 9:01 am)

yes i agree to you and the best thing is to charge the http://www.buildingregister.com as soon as possible
#728 of 791
Re: 1995 Camry , expansion valve & dryer [securitya8] by Mr_Shiftright HOST
Dec 01, 2008 (8:30 am)
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Replying to: securitya8 (Nov 30, 2008 10:14 pm)

That's a busted link and not an automotive one either, so I don't know what you're trying to do----hopefully not advertise something.
#729 of 791
heater goes on and off by astroman3
Jan 15, 2009 (5:21 am)
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hello i have a 96 astro that heat works well,the front heat i guess blower will come on and off at will,the rear works perfect,,,when the front heat comes on it works great,then will just go out at will,,now that its freezing out,you really notice it,,any idea were to start,to find the issue??
#730 of 791
Re: heater goes on and off [astroman3] by kiawah
Jan 15, 2009 (6:28 am)
Reply

Replying to: astroman3 (Jan 15, 2009 5:21 am)

Is it the heat (temperature hot vs. cold), or the blower (fan speed)?
 
If it is the latter, the blower fan speed, then check the blower resistor bank which is usually in the air plenum, right at the output of the blower fan. The design typically uses the air from the blower fan, to cool the resistors which get hot. That resistor bank is what gives you the different blower speeds (controlled of course by the blower switch). If one of those resistor wires burns out, you'll get weird motor speed problems.
#731 of 791
Re: heater goes on and off [kiawah] by astroman3
Jan 15, 2009 (9:55 am)
Reply

Replying to: kiawah (Jan 15, 2009 6:28 am)

sorry i wasnt more clear,the heat is fine its the blower that stops n starts at will,it just kicks on when it wants to or i hit a bump? its intermitent,its on one minute and off the next,not sure if a short or lose connection???
#732 of 791
Re: heater goes on and off [astroman3] by kiawah
Jan 15, 2009 (10:17 am)
Reply

Replying to: astroman3 (Jan 15, 2009 9:55 am)

check the resistor bank
#733 of 791
Re: heater goes on and off [kiawah] by astroman3
Jan 15, 2009 (10:35 am)
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Replying to: kiawah (Jan 15, 2009 10:17 am)

were would that be located and what am i checking for....
#734 of 791
Re: heater goes on and off [astroman3] by imidazol97
Jan 15, 2009 (10:40 am)
Reply

Replying to: astroman3 (Jan 15, 2009 9:55 am)

Another possibility is the blower motor is wearing out. It doesn't make contact at times and bumps and vibration will allow the brushes to make contact again. The more it wears the worse it will get.
 
And check the connectors on the wires to motor. Heating will often burn the plastic connectors or the metal contacts causing them to make and break connection because of poor contact.

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