Skip the auto shop - Our mechanics make house calls

How Long Does a Crankshaft Position Sensor Last?

crankshaft position sensor

The crankshaft position sensor monitors the rotational speed and position of the crankshaft in the engine. It reports this information to the engine management system to control the ignition system timing. The crankshaft position sensor is used with the camshaft position sensor to monitor the valves and pistons in the engine, which are an important part of the engine’s variable valve timing. Furthermore, the crankshaft position sensor synchronizes the engine once it starts, letting the management system know when to send the fuel.

The crankshaft position sensor needs to be in great condition in order to give an accurate reading. Therefore, if something is off with the sensor, the engine may exhibit different problems. Since the crankshaft position sensor is used every time the vehicle is running, there may be damage to the wheel and pin, magnetic problems, and wiring problems that can occur throughout the vehicle’s lifetime.

Wheel and pin damage happens when any of the wheel’s teeth are broken, worn, or snapped off. When this happens, the pattern of pulses that the sensor measures will be off and the sensor will become confused. The magnet part of the crankshaft position sensor can attract metal shavings that are in the engine compartment. This can throw off the sensor’s measurements as well. In addition, they can bridge between the wheel and the sensor, meaning they become closer together which also provides the wrong measurement. Wiring problems can happen anytime electricity is involved, and that is true with the crankshaft position sensor as well. The circuitry that connects the sensor to the computer’s control module can burn out. The sensor may not be able to read a signal at all if this happens.

Since the crankshaft position sensor can wear or break over time, it will need to be replaced. Watch for the following signs that indicate this is becoming an issue:

  • Poor fuel economy due to the engine using more gas
  • Engine misfiring because of the combustion being disrupted
  • Acceleration problems because the vehicle’s computer cannot make the proper adjustments
  • Check Engine Light
  • Difficult starting because the engine is not getting the proper amount of fuel
  • Stalling at low speeds because the fuel injectors are not providing enough fuel

If you are experiencing any of the symptoms above, have a mechanic take a look at your car. They make is simple to have your crankshaft position sensor replaced because their mobile mechanics will come to your home or office to fix your car.

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 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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
Veteran and Military Driver Laws and Benefits in New Mexico
The state of New Mexico offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch...


Related questions

Q: Car won't crank or start

Hello. If the engine will not try to turn over at all then the power to the start needs to be checked. If there is power to the starter and it is just not turning the engine then there may...

Q: Grinding noise and backfiring during startup

The starter on this vehicle requires a shim, so its possible that got left out when the starter was replaced. This could cause starter engagement problems and the metal on metal noise you're hearing. Backfiring, on the other hand, is...

Q: What to do when crankshaft wont turn with wrench to line timing chains

If you are trying to turn the crankshaft while the timing chain is off, you may have an open valve that is hitting a piston. This can be a big deal and you can damage the valve if you try...