How Long Does a Crankshaft Position Sensor Last?

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.


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Matthew

33 years of experience
1191 reviews
Matthew
33 years of experience
Mercedes-Benz CL500 V8-5.0L - Crankshaft Position Sensor - Norfolk, Virginia
Matthews was completely control and totally confident of the situation.He solved the problem very quickly.
Kia Rio - Crankshaft Position Sensor - Norfolk, Virginia
At every service Matthew arrives on time. He always completes the services in a timely manner. He answers all my questions as well as advice on how to maintain my car.

Christopher

12 years of experience
137 reviews
Christopher
12 years of experience
Chevrolet Cruze L4-1.4L Turbo - Crankshaft Position Sensor - Charlotte, North Carolina
good customer service, very patient, great attitude, explain the root of the problem would highly recommend

Corey

17 years of experience
316 reviews
Corey
17 years of experience
Nissan 350Z V6-3.5L - Crankshaft Position Sensor - Charlotte, North Carolina
Corey was great! He communicated and kept me in the loop with everything, respectful and did what he needed to do in a timely manner. If we had taken the car to a shop it would’ve been hours or days, but he got it done within 2 hours. Thank you guys for allowing and creating this service.

Dominic

28 years of experience
222 reviews
Dominic
28 years of experience
Nissan Pathfinder V6-4.0L - Crankshaft Position Sensor - Fort Myers, Florida
Dominic exceeded my expectations. It's obvious he cares about doing the best job he can for his customers and actually investigates and troubleshoots the problems with the vehicle instead of simply replacing parts, as most mechanics do. He was able to run diagnostics and pull a code out of my vehicle's memory that the dealership either couldn't, or was to lazy to attempt. This enabled him to narrow down the exact cause of the issues and initiate a direct fix, instead of going with a guess.

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