What does this ?

Discussion in '80-Series Tech' started by T Y L E R, Nov 18, 2003.

  1. T Y L E R

    T Y L E R

    Messages:
    2,597
    Likes Received:
    5
    Joined:
    Mar 27, 2003
    Lately I've noticed something ....

    I'll be sitting at a light . Even if the stereos on , I'll sense a loss of background noise , and simultaneously I'll feel the brake pedal drop slightly . Hell the first time this happened I immediately thought the vehicle was going to stall . Felt like I had lost engine power for an instant . It's cooler these days so I keep the defrost on ... which leads me to a question :

    When you have the defrost on , does the AC light come on ? Mine does ... unless I change to the setting to the left of full defrost . I have my temperature setting up high , so why does the AC light up ? Makes me wonder if I have a defect of some sort that is casuing the defrost to set off the AC , and that musty be the noise I'm hearing ... AC compressor ??

    • So is it AC ?
    • Is this normal ?
    • Why does my brake pedal drop ? ( when the comp. goes off ?)

    Tyler
     
  2. alaskacruiser

    alaskacruiser

    Messages:
    1,619
    Likes Received:
    21
    Joined:
    Mar 30, 2003
    Location:
    LA, CA
    The AC coming on w/ defrost is normal- it helps to better defrost the windshield. Not sure on the brakes- haven't noticed that.
     
  3. sjcruiser

    sjcruiser

    Messages:
    834
    Likes Received:
    3
    Joined:
    Apr 3, 2003
    Tyler,

    AC is supposed to be on with front windshield defrost - it dehumidifies inside air.

    I too have noticed a drop in the brake pedal at stoplights as well (not limited to my cruiser). I had thought it has air in the brake lines; but in that case the pedal travel would be in reverse direction. Really appreciate if someone could explain the rationals behind this though.

    Regards,
    Frank.
     
  4. Vlad

    Vlad The Impaler SILVER Star

    Messages:
    9,953
    Media:
    2
    Albums:
    1
    Likes Received:
    1,286
    Joined:
    Feb 7, 2002
    Location:
    Woodstock, GA
    increased idle with AC on at a stop would increase vacuum on the booster....causing pedal to drop.

    If your booster blows out...your pedal goes WAY down =)
     
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.