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vacuum

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How to Replace a Cruise Control Vacuum Reservoir
The cruise control system has a failing vacuum reservoir if the cruise control does not hold speed or you hear a hissing noise coming from the car.
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.
Symptoms of a Bad or Failing Vacuum Pump
Common signs include poor fuel efficiency, difficulty pressing the brake pedal, oil leaking under the engine, and the AC not working.
How Long Does a Brake Booster Vacuum Pump Last?
The hydraulic braking system on your car is very complicated. Without all of the various components of this braking system working together, it will be very hard for you to...
How Long Does a Vacuum Pump Last?
Your car’s engine is a very complex piece of machinery. In order for it to function properly, there are a number of different components that will have to work together. Among the...
How Long Does a Brake Booster Vacuum Sensor Last?
In order for a car to have the brake power that it needs, there will have to be a sufficient amount of vacuum power. The engine of a car produces...
Symptoms of a Bad or Failing Thermostatic Vacuum Sensor
Common signs include the Check Engine Light coming on, poor engine performance, and an overheating engine.
How Long Does a Thermostatic Vacuum Sensor Last?
Winter can make for tricky driving conditions - just starting up your vehicle can be a bit more of a chore. When the engine is cold, it takes a few minutes...
Symptoms of a Bad or Failing EGR Vacuum Modulator
Common signs include engine performance issues, the Check Engine Light coming on, and failing an emissions test.
How Long Does an EGR Vacuum Modulator Last?
Not only does the EGR (exhaust gas recirculation) system in your vehicle cut down on emissions, but it also helps to make your engine run more efficiently. However, in order for...
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...
Symptoms of a Bad or Failing Vacuum Booster
Common signs include a stiff brake pedal, intermittent power to the brakes, and a brake pedal that sinks all the way to the floor when applied.
How Long Does a Vacuum Booster Last?
Without a properly working braking system, it will be nearly impossible to avoid being in a wreck. Most people fail to realize just how important their braking system is until they are...
Symptoms of Bad or Failing Vacuum Hoses
Common signs include the Check Engine Light coming on, engine not running smoothly, and engine losing power or not starting.
How to Replace an Exhaust Gas Recirculation (EGR) Vacuum Modulator
The EGR vacuum modulator meters the EGR valve in some car systems. Some signs of a failing EGR vacuum modulator include stalling and a rough idle.
How to Inspect Car Vacuum Hoses
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...
How to Replace a Brake Booster Vacuum Sensor
The brake booster vacuum pressure sensor is a vital part of power brake operation. A Check Engine Light or a hard brake pedal are signs of failure.
How to Replace a Cruise Control Vacuum Bleed Switch
Cruise control slows when the vacuum bleed switch activates. It fails if the cruise control deactivates automatically or will not hold the speed.
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 Hose
A vacuum hose is failing if the Check Engine Light comes on, the engine does not run smoothly, or the engine loses power and does not start.

Related questions

Question
Went in for an oil change and came out with a non working car.
Hi there. First check the ECM (computer) for any codes that could be store as the check engine light came on. Before blaming any location for the vehicle's running condition, check to see what codes are stored to have a...
Question
Running lean and I can't find a vacuum leak. Sometimes vibrates at various speeds. I let off the gas and then there is a lack of power.
Hi there. For the vacuum leak, look at all of the vacuum hoses on the engine and brake booster. Check to see if the hoses are split, cracked, or unmounted. A vibration could be the engine running rough from the...
Question
Manifold bolts loose and possible vacuum leak.
Hi there. If the intake bolts are loose, then there was an issue with the engine before and a mechanic or someone has removed the intake manifold to fix what ever had failed. It is possible that the mechanic or...
Question
Rough idle after sensor and rear seal changed
Hi there. Sounds like the dealership technician may have removed some vacuum lines to get to the rear main seal and may have not put them back on. Check the back of the engine to see if any vacuum lines...
Question
High idle problem.
It sounds like you may have a vacuum or an intake leak somewhere. It may be that when you touch the gas pedal, as the throttle plate opens and lets in the additional air, that the air leak is accentuated...
Question
I changed the motors and it starts and runs great at low rpm. If I try to accelerate it sputters and falls on its face.
Hi there. Check all of the vacuum lines to the engine and make sure that they are all connected or plugged off if they are not needed. Check the spark plugs and see what condition they are in. If the...
Question
My car will not go over 20 mph.
Hi there. Check the fuel pressure regulator and make sure that its working and plugged in. Put a fuel pressure tester on the fuel rail and make sure that there is good fuel pressure of 45 to 65 psi. If...
Question
Where do the vaccum lines go from the carb?
The vacuum lines coming from the carburetor cover several systems on the vehicle. The best diagram you can find for the vehicle can be found detailed in the service manual. Service manuals are available at many local auto parts stores...
Question
I do not know where my brake booster vacuum line connects to my engine.
The HHR comes with two different motor options, so this complicates my answer a bit. Either way, the best method is to follow the hose at the brake vacuum booster to where it connects on the motor. Even better, simply...
Question
1998 dodge viper gts letting of throttle rpm hang 2100 for about 10 to 15 seconds then drop to 700 where it should be.
Hi there. Check the engine for any vacuum leaks. Check all of the vacuum lines to the engine and the brake booster. If there is no vacuum leak, then check the idle air control valve (IAC) and see if it's...
Question
High RPM's after tune up.
Hi there. Sounds like the rodent that nested on the engine may have knocked off a vacuum hose or chewed through a vacuum hose. The engine idle could be high for a vacuum leak or the idle air control valve...
Question
Stalling issue and hissing sounds.
Hi There, It sounds like you definitely have a vacuum leak. High idle speed, stalling and hissing sounds are common signs of a vacuum leak. When a vacuum leak is present in an engine, this causes an excessive imbalance in...
Question
What are the three hoses coming from air box on my Buick verano?
Hello, thank you for writing in. There are several vacuum lines associated with the engine intake and throttle. One of which that does run along up towards the firewall is the brake booster line. This vacuum helps assist the master...
Question
Engine vacuum pump and centrifuge is leaking.
Hi there. All parts on a car are designed to have a longevity date to them, but it is normal for parts that are more than 5 years old to fail. The vacuum pump and centrifuge could be leaking for...
Question
Multiple Issues
The weak battery may be a result of a faulty alternator or voltage regulator. As you may know, the alternator is responsible for charging the battery while the engine runs by generating amperage and recharging the battery while the engine...
Question
I have an engine with a two barrel carburetor. It appears to me the 2nd barrel isn't opening. When and what opens the second barrel?
Hi there. On two barrow carburetors, there are two ways that they open. The most common way is through engine vacuum. When the vacuum drops to near zero, the secondary throttle valve will open and operate the secondary jets. Other...
Question
Sounds like vacuum leak
When you suspect a vacuum leak on the engine it may be a cracked hose or a gasket leak. The best way to find it is to use a hose to your ear and move around the engine intake and...
Question
Electrical / Hose RODENT Damage to vacuum pump.
Hi there. If you have had a rodent living in your engine compartment, there could be multiple issues as rodents tend to chew through just about everything. It is possible that the rodent could have damaged the vacuum pump, but...
Question
Ac vents not blowing
If your system is vacuum operated you should see hard plastic black colored lines and there should be a visible line through the firewall. If no such lines are visible, your system is electronically controlled. If vacuum operated, you can...
Question
Brakes gradually tighten on all four wheels while driving and not applying the brake pedal
Hi there. Sounds like the vacuum check valve on the brake booster is stuck. I recommend replacing the vacuum check valve and the brakes will work normally. If you need further assistance with your brakes sticking, then seek out a...

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