How Long Does a Cruise Control Vacuum Reservoir Last?

The cruise control vacuum reservoir is an air bladder that stores a supply of spare air that is vacuum pressured for when the primary vacuum runs low. This part is located directly behind the front bumper of your car. To understand how this part works, you should understand a little bit about how the engine and cruise control works. The engine in your vehicle creates a vacuum pressure when the pistons are in the down stroke. The air is then drawn into the cylinders and then saved to operate features such as the cruise control.

The servo needs a constant supply of vacuum to maintain its position. If there is more demand for vacuum than the engine can provide, the operations that are run by the vacuum will not work like they should. For example, the cruise control speed will go to excessive speeds or the servo will not stay in the correct position.

The cruise control vacuum reservoir has negative pressure inside of it. Once the RPMs increase on the engine, and the engine vacuum lowers, the reservoir has a good amount of vacuum to ensure the engine has a steady amount to keep the various functions operating as they should.

Over time, the cruise control vacuum reservoir can become broken or fail. If the reservoir leaks or fails, the vacuum pressure will not be able to remain as it should and the other operations will not function properly. The reservoir does not normally get inspected during maintenance, so if you suspect the cruise control vacuum reservoir is going bad, it is important to have a professional mechanic diagnose the problem so they can replace the part.

Since the cruise control vacuum reservoir can fail over time, you should be aware of the symptoms that indicate the part needs to be replaced.

Signs that show your cruise control vacuum reservoir needs to be replaced include:

  • Cruise light on your dashboard
  • Cruise control will not set at all
  • The cruise control surges on its own to mph above where you set it
  • Other features in your vehicle do not work such as the air conditioning, power brakes, or heater

If you are experiencing any of the above symptoms, book a service with a mechanic to replace your cruise control vacuum reservoir.


Next Step

Schedule Cruise Control Vacuum Reservoir Replacement

The most popular service booked by readers of this article is Cruise Control Vacuum Reservoir Replacement. YourMechanic’s technicians bring the dealership to you by performing this job at your home or office 7-days a week between 7AM-9PM. We currently cover over 2,000 cities and have 100k+ 5-star reviews... LEARN MORE

SEE PRICING & SCHEDULING

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

Recent Cruise Control Vacuum Reservoir Replacement reviews

Excellent Rating

(171,627)

Rating Summary
161,099
5,644
1,174
834
2,876
161,099
5,644
1,174
834
2,876

Wayne

31 years of experience
102 reviews
Wayne
31 years of experience
Ford Taurus V6-3.0L - Car idle is rough - Philadelphia, Pennsylvania
Great guy know what he taking bout

Richard

11 years of experience
450 reviews
Richard
11 years of experience
Volvo XC90 L5-2.5L Turbo - Crankshaft Position Sensor Replacement - Alexandria, Virginia
He was very friendly an fast an he was at my location early Richard was the best

Dan

39 years of experience
975 reviews
Dan
39 years of experience
Chevrolet Impala V6-3.4L - Window Motor / Regulator Assembly Replacement (Driver Side Front) - Duluth, Georgia
This was a great experience for me. Everyone I tell can't believe how someone came to my house and fixed my car and saved me money. I can't say enough good things.

Duane

25 years of experience
510 reviews
Duane
25 years of experience
Chevrolet Trailblazer L6-4.2L - Turn Signal Switch - Oceanside, California
Good

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

Related articles

How to Inspect Car Vacuum Hoses
As As you drive your car, your engine draws in massive amounts of air which it then mixes with gas and ignites it to keep the engine running. The vacuum created as a result is fairly constant depending on throttle...
How to Replace a Coolant Vacuum Valve Switch
A vacuum line attaches to the vacuum switch in your car as part of the engine’s heating and cooling system. A faulty switch can break your heater.
How to Replace a Vacuum Brake Booster
The vacuum brake booster generates extra force for car brakes. If your car is hard to stop or wants to shut off, replace your brake booster.

Related questions

Dash lights and radio randomly turn on and off
Hello. This is something that can be fixed. It is possible that when the starter was replaced, something was left loose and as a result, this has caused the lights on your dashboard to flash on and off. I think...
vacuum hose collapse for brake booster
No it is not supposed to collapse. The hose has most likely got soft from oil or other contaminants and should be replaced. If you find the hose has fluid in it and it is brake fluid, then your brake...
4Runner has no power in the engine.
Check the engine for a vacuum leak and see if the valve on the brake booster is leaking. Also check the EGR (Exhaust Gas Recirculation) is stuck on all the time. A vacuum leak or the EGR being stuck on...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com