Question about 2003 Buick Century

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2003 buick century air conditioning controller apparantly not working hot one side, cold the other, gets warm quickly

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  • MW1954 May 13, 2009

    When we turned on the A/C today, the passenger side blew hot air, while the driver side was blowing cool air.

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Had the exact same problem turned out it was the air temp. actuator motor part# 604107 from rockauto.com for like $35.had to pull out glove comp. and black panel by feet to get to it ,good luck!!!

Posted on Jun 01, 2009

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Problem with heating and air conditioning. The driver's side is blowing hot air and the passenger side is blowing cold air


Air Conditioner blows warm air
  1. Air conditioner system is discharged. Have the system evacuated, charged and leak tested by an MVAC certified technician, utilizing approved recovery/recycling equipment. Repair as necessary.
  2. Air conditioner compressor clutch not engaging. Check compressor clutch wiring, electrical connections and compressor clutch, and repair or replace as necessary.

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98 buick century AC blows cold air on passenger side and hot air on drivers side..when we recharged the unit, it worked cold air for a few days and now blowing hot air again.


Hi. There seems to be a blockage within the system. I will list all parts to be checked by your mechanical. I would also have the blend door linkages or servos inspected for fail points along with the listed areas of concern, below:

Loose or broken drive belt
Inoperative compressor or slipping compressor clutch
Defective expansion valve
Clogged expansion valve, receiver-drier or liquid refrigerant line
Blown fuse
Leaking component: any of the parts listed above or one of the A/C lines, hoses or seals.

Instruct your mechanic to check all the above, along with the dash blend door linkages for faults.

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2003 buick century a/c low pressure switch WHERE LOCATED ON CAR


driver side a/c comes out hot passenger side is ok played with the driver side switch got it to come out hot on red. Why can't i get hot and cold to come out the driver side? The car only allows me to use one or the other.

May 19, 2010 | 2003 Buick Century

1 Answer

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You should have a blend door actuator. This can be bad or the door itself can be broken. It is most likely in the dash and not easily accessible.

May 18, 2010 | 2003 Buick Century

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98 buick century , with auto climate control ,


is it HOT or just not as cold. If its HOT, like heated air, there is a door problem, if its just not cool, the a/c refridgerent is low and will need a recharge, most likely the comp is leaking.

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I would check fuse in the fuse box on driver side.Should be a 15 amp fuse.

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here is a diagram of your systemb79c215.jpg dfecc43.jpg

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is it wet on the pass side floor ??? your heater core is out.. hard to replace...

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1 Answer

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The problem is with the diverter valves in the dash.

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