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blend door snafu

mott on Mon March 29, 2010 3:02 PM User is offlineView users profile

Year: 1998
Make: olds
Model: bravada
Engine Size: v-6
Refrigerant Type: r-134
Country of Origin: United States

i recently replaced compressor, accumulator., orifice tube, and lines and flushed the system. the problem i have is the blend door cycles back and forth. as soon as it reaches one end of it's travel it reverses. it only takes a few seconds each way resulting in cold/hot/cold/hot etc. whazzup? help me, my wife is mad.

HVargas on Tue March 30, 2010 11:16 AM User is offlineView users profile

As best I could find, the reason it is cycling is because it is trying to search for the right spot to find temperature. There are a couple fixes for this. First, you can move the temperature knob back and forth several times and then start at one temperature and slowly move the knob to each setting. This will sometime's reset it. Otherwise you will have to remove the dash to replace the blend door actuator.

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mott on Tue March 30, 2010 2:36 PM User is offlineView users profile

thanks, i'll try that. i did put it on auto and it worked for 1 day.

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