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Re: '86 5000S HVAC without a clue...
>>I have an early '86 and the darn automatic controls seem to want to blowout
>>the front vents for a bit, and then switch to the defroster vents, and
>>sometimes to the floor, and sometimes the compressor is asked to make cold
>>and sometimes it doesn't get asked to make cold air (not that the cold air is
>>much more than cool at this point) without me touching a button.
>>Some of the vacuum hoses seem to be frayed (I installed the 'upgrade oil
>>catcher' thing for the vacuum lines, and it has some oil in it now), but is
>>there a controller that is going bad (common??) that I can work on? Or am I
>>looking in the wrong place?
>Does the change occur under load? My 79 5K had a bad vacuum motor for the
>recirc vent and that system leak made it do all kinds of crazy things.
It happens all the time, load or no load. Only the a/c does perform a bit
better when the car is running, but that is to be expected.