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Climate Control/Blend Door

4 messages,  Last post on Apr 26, 2010 at 9:25 AM

You are in the Buick Park Avenue Forum.

What is this discussion about? Buick Park Avenue, Sedan

Messages Page 2 of 2

#2 of 4 Re: Climate Control/Blend Door [wulfsburg65] by imidazol97

Apr 23, 2010 (4:02 pm)

Replying to: wulfsburg65 (Apr 23, 2010 3:33 pm)
An assumption on my part is that there are no vacuum controls on the heater actuators. They are all electric actuators.
 
Have you tried getting a diagram of the locations of the various actuators? I recommend your public library to see if they have AllData access. Ours does at the branch; I can save graphics and text to my USB memory stick, or I can save the whole web page with all files so that I open that page at home and it's just like the original on the computer.
 
Some people were having trouble with a vast difference in cold output with AC last summer. It turned out to be a low charge of freon. I don't remember which side of the car gets the cold air, but the freon comes into the evaporator in the area that goes to one side of the car, absorbs heat and becomes gas, and there's no liquid left to cool the air in the other part of the evaporator core. So one side of the car gets warm air, more or less, while the other gets extra cold air due to the low charge. I recommend a gauge from Walmart and a can of R134a without sealer and without the special extra cooler stuff; just a regular can. When the outside air is low 70s I put a small fan in front of the condenser and charged my 98 Buick up to the maximum amount in the green gauge area.
 
If the temperature is balancing okay when in heat mode at night or when it's chilly, I'd suspect the freon problem.
 
Good luck finding your problem.
 
I would not jam a stick into the flap and block the actuator. It might damage the gearing if the thing is working correctly.

#3 of 4 98 Park Ave. blend door by patterdale

Apr 26, 2010 (9:05 am)

I have a similar problem but the passenger side blend door is not moving. I have replaced the actuator and that was not the problem. Does anyone know what the resistance of the pass. side temp sensor should be? My ohm meter reads that it is open. I have voltage to one side and nothing coming out. Any input as to whether the problem is with the sensor, pass side temp selector, or the control module would be greatly appreciated.

#4 of 4 98 Buick Park Ave diagnostic flow charts by patterdale

Apr 26, 2010 (9:25 am)

I have a obd 2 code reader and can download codes till I am blue in the face. The codes are no good with out the diagnostic flow charts. A code that says low input on the mass airflow sensor could mean that way more than one problem exits. I know these charts exist from my past work as a Ford mechanic. Does anyone know where i can get this info?

Messages Page 2 of 2

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