Skip the auto shop - Our mechanics make house calls

How Long Does a Cruise Control Vacuum Bleed Switch Last?

Cruise Control Switch Vacuum Bleed Switch

The cruise control vacuum bleed switch is an essential part of the cruise control system. Once you set the cruise control, the negative pressure within the vacuum is used to open and close mechanical switches. The vacuum switch located at the servo keeps a steady pressure after the cruise control is set. Once it is time to slow down, you can press the deceleration button on your steering wheel that releases the vacuum in the servo. After the vacuum is released, the vehicle automatically responds by decreasing its speed.

The vacuum supply system normally contains a one way check valve and a vacuum storage container. When the engine has low vacuum periods, the reserve vacuum supply is able to provide the extra vacuum it needs. Speed control in your vehicle is controlled by electronic signals from the cruise control module to modulate the vacuum inside the cruise servo. The cruise control servo has a vacuum diaphragm connected to a throttle lever by either a chain, cable, or linkage rod.

The cruise control vacuum bleed switch holds the vacuum in place and at the right pressure until the brake pedal is pressed down. After the brake pedal is depressed, it releases the vacuum, also known as bleeding. Sometimes the cruise control vacuum bleed switch will leak and will not stay at a set speed. If the switch will not open, the cruise control may not slow your vehicle down.

There are many parts to a vacuum run cruise control system and all of these parts need to be running properly for the cruise control to work. If the cruise control vacuum bleed switch is not working right, you may hear a hissing noise near the pedals. This part can become worn and break over time, especially if it is used on a regular basis. Because of this, you should be aware of the symptoms the cruise control vacuum bleed switch gives off before it completely fails.

Signs your cruise control vacuum bleed switch needs to be replaced includes:

  • The cruise control will not set at all
  • The cruise control will not hold its speed once it is set
  • There is a hissing noise near the pedals
  • The cruise control will not disengage when the brake pedal is pushed down

If you are experiencing any of the above symptoms, consult a professional mechanic.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

How Long Does a Throttle Return Spring Last?
Not all vehicles on the road feature an electronic throttle control (ETC), which is also called drive-by-wire. For vehicles that don't offer this system, they have a throttle cable instead that...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
The Traveler’s Guide to Driving in Malaysia
CraigBurrows / Shutterstock.com Malaysia is a popular destination for many tourists today. The country has amazing sights and attractions that you will want to explore....


Related questions

Q: Wiring problems with car I purchased.

It definitely sounds like something isn't working right, if the lights are dim try wiggling the connectors and wires looking for a bad connection, the low beams and brights have separate fuses so try checking the high beam fuse. If...

Q: Vauxhall Corsa D 2013 - Brake Light Switch needs locating.

Hi there. Go to the brake pedal and look at the top of the leg of the pedal and you will see a switch that is mounted on the bracket that the pedal is hanging off of. That switch is...

Q: Keyless synchronization, how much is cost? Change lock from door? 2006 Pontiac Grand Prix

Hello - there will be 2 tasks here. The first is to match the door lock(s) with the ignition switch key tumbler if you wish for one key to do everything as a new car would. This can be done...