Chevrolet Repair: 82 P30 454 MH, vacuum source, vacuum line
QuestionHeater/AC does not work. No vacuum to control head. I just bought this vehicle and having to counter previous no so good maintenance. There is a vacuum line hanging down just front of the engine. I verified that this the vacuum line to the AC/heater control head in the dash. It has a broken white fitting in the end. I can not find anywhere to connect this line. From what vacuum source did Chevy drive the AC/heater controls?
Thanks.
AnswerHi John,
I found this question in the question trash can. Once it ends up there, any expert can answer it. It has been there a while. Sorry about that. I hope I can help.
I would connect this to a man. vac. It is the most powerful vac; and though it falls off, it is still present when accelerator is pressed. Should be enough vac left at crusing speed to operate these heater doors.
Hope this helps.
C J S