Last Updated on December 8, 2022 by tawhid

If your car is having trouble starting, it may be due to a problem with the crank position sensor. This sensor tells the computer where the crankshaft is located so it can properly time the ignition and fuel injection. If it’s not working properly, your car may start and stall or have difficulty starting.

You can bypass the crank position sensor to get your car started, but this is only a temporary fix.

  • Disconnect the negative battery cable
  • Remove the serpentine belt
  • Locate the crankshaft position sensor and unplug it from the wiring harness
  • Insert a small flat-blade screwdriver into the slot on the end of the CPS and rotate it counterclockwise to remove it from its mount
  • Pull out the old CPS and insert a new one in its place, making sure that it is seated properly in its mount
  • 6 Plug in the wiring harness connector to the new CPS and reattach the serpentine belt
  • 7 Reconnect negative battery cable

Temporary Fix for Crankshaft Position Sensor

If your car is having difficulty starting, or is misfiring and running roughly, there may be a problem with the crankshaft position sensor. This sensor provides information to the engine control unit about the position and rotational speed of the crankshaft, so that the ECU can properly time fuel injection and ignition. A failing or failed crankshaft position sensor will usually trigger a “check engine” light on your dashboard.

In most cases, a faulty crankshaft position sensor can be replaced relatively easily. However, depending on the make and model of your vehicle, it may require special tools or knowledge to correctly replace the sensor. If you’re not comfortable working on your car’s engine yourself, it’s best to take it to a mechanic or dealership for service.

In some cases, it may be possible to temporarily fix a failing crankshaft position sensor. For example, if there is debris blocking the sensor’s sensing element, you may be able to clean it off with compressed air or fine sandpaper. Loose electrical connections can sometimes be tightened or re-soldered.

And if the problem is simply a dead battery in the sensor itself, you may be able to replace just that component rather than the entire sensor assembly. Of course, these are just temporary fixes – eventually you’ll need to replace the crankshaft position sensor for good in order to keep your car running smoothly. But if you’re in a bind and need to keep your car on the road until you can get it properly serviced, these tips should help!

How to Bypass Crank Position Sensor


Can You Start a Car Without Crankshaft Position Sensor?

If your car has a crankshaft position sensor, then you will need it in order to start the car. This is because the sensor helps to identify the position of the crankshaft, which is necessary for the engine to function properly. Without it, the engine will not be able to start.

What Happens If You Drive Without a Crankshaft Position Sensor?

If you drive without a crankshaft position sensor, your car will not start. The crankshaft position sensor is responsible for telling the engine control module (ECM) the position of the crankshaft in relation to the pistons. This information is used by the ECM to determine when spark and fuel need to be injected into the cylinders.

What Happens If the Crank Sensor is Not Working?

If the crankshaft sensor is not working, the engine will not start. The crankshaft sensor is responsible for sending a signal to the engine control unit (ECU) that tells it when the engine is running. Without this signal, the ECU cannot properly inject fuel into the cylinders and ignition timing will be off, resulting in an engine that won’t start.

Can You Drive With a Broken Crank Sensor?

If your car’s crank sensor is broken, you should not drive it. The crank sensor is what tells the engine how fast the crankshaft is spinning. Without this information, the engine can’t run properly and will likely stall.

Additionally, a broken crank sensor can cause other problems such as misfires and poor fuel economy. If you’re experiencing any of these issues, you should have your car towed to a mechanic so they can diagnose and repair the problem.



If your car’s crank position sensor is giving you trouble, there are a few ways to bypass it. One way is to disconnect the sensor and jump the wires together. This will bypass the sensor and allow the engine to start.

Another way is to remove the sensor entirely and connect the wires directly to each other. This will also bypass the sensor and allow the engine to start.

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