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Drivetrain Cruise Control Doesn't Disengage With Brake

  • Thread starter Thread starter Imatk
  • Start date Start date Aug 24, 2021
I

Imatk

Active Member
Apr 17, 2005
101
10
29
Aug 24, 2021
#1
  • Aug 24, 2021
  • #1
I THINK this might be because I swapped out the brake booster. That's the only thing I can think that would be different.

But the cruise control does work... just doesn't shut off when you press the brake... you have to press "Off" on the wheel to get it to stop.

Anyone know what this might be?
 

KRUISR

10 Year Member
Apr 16, 2015
1,858
989
143
Aug 24, 2021
#2
  • Aug 24, 2021
  • #2
There is a separate vacuum switch on the brake pedal to disengage cruise. It is adjustable. This pic is a clutch/brake pedal assembly, but an automatic car brake pedal has the same.
 
Reactions: Mustang5L5 and Imatk

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,299
18,005
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Massachusetts
Aug 25, 2021
#3
  • Aug 25, 2021
  • #3
Definitely check the vaccum dump on the brake pedal. It is adjustable, but it's also normally opened unless the pedal is in contact with it in which case the vent is closed. So not having the brake pedal touch it should result in not having any cruise control.


The stop light switch also IS wired into the cruise control module. Do your brake lights work?

 
Reactions: General karthief
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