What is the Vacuum Pump?
While all gasoline engines generates vacuums during operation, sometimes the amount created isn’t enough to power the accessory systems in the vehilcle. Diesel engines do not create vacuums at all during operation. In both of these instances, a vacuum pump is used to either augment or gives the vacuum power necessary to operate the various other systems on the vehicle, including the brakes, some HVAC functions and more. The vacuum pump is usually found behind the engine, mounted near the firewall and close to the master cylinder and brake booster. It’s easily recognizable for its two nozzles on top, as well as the design of the canister. It is an electric air pump that maintains a constant amount of vacuum in the vacuum reservoir behind the front bumper. If the vacuum pump stops working or develops a leak, the engine compartment may release a hissing sound, the heater controls may not switch when operated, or the brake pedal may be hard to depress.
SEE ALSO:WHAT ARE SIGNS OF A BAD VACUUM PUMP
Bear in mind:
- The vacuum pump is an electronic component that can experience both electrical and mechanical issues.
- The vacuum pump is not designed to be serviced, so it will not be inspected during routine maintenance aside from a vacuum line inspection.
- Leaks in vacuum lines can mimic signs of vacuum pump failure.
How it’s done:
- The faulty vacuum pump is found and identified
- The valve vacuum pump is then removed
- The new vacuum pump is then installed
- The brakes are tested for proper vacuum pump operation
- The car is road tested and checked for proper vacuum pump and brakes operation
The vacuum pump, which is expected to last the life of your car, does not receive any maintenance and is only serviced when it fails. If you are experiencing symptoms related to the vacuum system, have your car diagnosed by one of our expert mechanics.
What common signs indicate you may need to replace the Vacuum Pump?
- Heater controls don’t operate properly
- A hissing air sound is noticed
- Brake pedal is very hard to press
How vital is this service?
If the vacuum pump fails, your brakes may not operate properly and car operation becomes unsafe. Have your vacuum pump replaced immediately if it is diagnosed as faulty.