Skip the auto shop - Our mechanics make house calls

How Long Does a Thermostatic Vacuum Sensor Last?

Thermostatic Vacuum Sensor

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 before it reaches optimal temperature and you should start driving. The engine needs to be running optimally so that it can create vacuum, which isn't possible when it’s cold. This vacuum supports all kinds of other components in your automobile such as your distributor, EGR system, cruise control, and even the heater.

So what monitors the temperature? That's the job of the thermostatic vacuum sensor, which can be found on the intake manifold. This component measures the temperature of the coolant in order to figure out if the proper operating temperature has been reached. At that point the vacuum sensor is able to open up the various parts it controls. Without the vacuum sensor working, you'll have issues with your engine running properly as well as other problems. While there is no set mileage that this part is meant to last, it is important you keep it in good working condition.

Let’s take a look at some signs that the thermostatic vacuum sensor may have reached the end of its lifeline and needs replacing:

  • When you first start up your car, especially if it is cold out, you may notice that the engine has a hard time. It will remain the case until the engine is able to warm up.

  • When the engine is hot it may stall, stumble, or feel like there is a decrease in power. None of this is normal and should be diagnosed by a mechanic.

  • The vacuum sensor may become faulty and then get stuck in a closed position. If this happens you're going to start expelling higher levels of exhaust emissions, you would likely fail a smog inspection, and you'll notice your fuel consumption is very poor.

  • Another sign is the Check Engine Light - which may come on. It’s important to have the computer codes read by a professional to determine the exact cause.

The thermostatic vacuum sensor runs based on the temperature of your engine coolant. From that information it knows when to open or close the vacuum. This part needs to remain in good working order for your engine to operate properly. Have a certified mechanic replace the bad thermostatic vacuum sensor to eliminate any further problems with your vehicle.

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 to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
How to Find the Keyless Code on a Ford Explorer or Mercury Mountaineer
Many Ford Explorers and Mercury Mountaineers were manufactured with an option known as the Ford keyless entry keypad. Some models refer to it as SecuriCode as well. It...
How to Transfer a Car Title in Idaho
In order to prove ownership of a car, you must have the title. However, when a car is sold, given away or inherited, the title needs...


Related questions

Q: low gas mileage

Decreases in fuel economy are caused by things like fuel control issues (fuel injector leaks, bad O2 or other sensors), transmission problems (won't shift into high gear, slipping, torque convertor clutch fails to lock-up), misfires (ignition related), low tire pressure,...

Q: Car hums when running hot

Hi there. Vehicles can make all sorts of noises and whines, for many reasons. Because vehicles can run hot, and make noises for a variety of reasons, many times it is best to have a professional technician, such as one...

Q: Difficulty restarting when the engine is warm - 1994 Dodge B530

Hey there, thanks for writing in. You'll need to determine whether the reason for the no-start is from lack of fuel or spark. Ignition coils get pretty hot during operation and if your coil is cracked, it will expand a...