What does this ?

Joined
Mar 27, 2003
Messages
2,610
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
 
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Mar 30, 2003
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The AC coming on w/ defrost is normal- it helps to better defrost the windshield. Not sure on the brakes- haven't noticed that.
 
Joined
Apr 3, 2003
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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.
 

GXO

GXOR
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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 =)
 

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