How do you relearn the crankshaft position sensor?

How do you relearn the crankshaft position sensor?

1. Turn off all of the accessories.
2. Accelerate the vehicle to 55 mph at part throttle.
3. Cruise at 55 mph for another 5-6 minutes.
4. Decelerate to 45 mph without using the brakes, and maintain 45 mph for 1 minute.
5. Perform 4 deceleration cycles, without using the brakes, of 25 seconds each where no specific speed is necessary.

What does a crankshaft relearn do?

The proper procedure for resyncing or relearning the crankshaft position is called the “CKP Variation Learn.” The CKP Variation Learn procedure resets the positional information in the PCM’s memory and replaces it with updated information from the new crankshaft sensor.

How do you adjust crankshaft position?

Remove the right front wheel well liner.

1. Rotate crankshaft until cylinder 1 is 45 degrees BTDC.
2. Working above the right drive axle, remove the crankcase timing plug.
3. Install the TDC timing peg finger tight.
4. Hole on crankshaft pulley will align with hole on timing cover.

How do I know if my crankshaft is bad?

Symptoms of a Bad or Failing Crankshaft Position Sensor

1. Issues Starting the Vehicle.
2. Intermittent Stalling.
3. Check Engine Light Comes On.
4. Uneven Acceleration.
5. Engine Misfires or Vibrates.
6. Rough Idle and/or Vibrating Engine.
7. Reduced Gas Mileage.

Does a crankshaft sensor have to be programmed?

No, they do not have to be programmed. After the replacement you should cancel the code and see if it comes back.

Is it bad to do a crank relearn?

Failure to do such will result in over revving of the engine, causing possible engine damage. 8. Once the engine has returned to idle, check the status of Diagnostic trouble code P1336.

Can you replace a crankshaft without removing the engine?

Although crankshafts are traditionally removed after the engine has been pulled from the engine bay, it is possible to remove the crankshaft without pulling the engine.

What noise does a bad crankshaft make?

Knocking noises coming from the engine is one of the common symptoms of a bad crankshaft bearing. Drivers usually refer to this as a rod knock which sounds like a consistent hammering that increases as the RPM does. This can occur when the crankshaft bearing has worn out that causes excess clearances.

What does the crank position sensor on a Subaru Forester do?

The Subaru Forester utilizes a crankshaft position sensor in order to regulate the engine timing. This sensor uses a reluctor to gauge the position of the crank. When the Forester’s ECM determines that there is an issue with the signal coming from this sensor, it’ll throw the P0335 trouble code.

How many ohms does a Subaru crankshaft sensor read?

Generally, a functioning sensor will have a reading between 1-4 ohms. This video is being performed by an experienced tech. Any attempt to repair automotive parts and/or systems carries risk of personal injury. Always adhere and follow safe practices when working on vehicles. Such as, use safety glasses, jack stands, no loose clothing, etc.

Is the crankshaft position sensor prone to damage?

Due to the location of the crankshaft position sensor, it is prone to damage. Start by inspecting the wiring harness between the firewall and crank sensor for any obvious damage. After that it would be prudent to look at the wiring harness plug at the sensor itself. This YouTube video shows exactly how to test the wiring integrity.

What should crank sensor reading be on 2010 Subaru Impreza?

This particular vehicle is a 2010 Subaru Impreza non-turbo, however, turbo models have the crank sensor at the same location. Generally, a functioning sensor will have a reading between 1-4 ohms. This video is being performed by an experienced tech. Any attempt to repair automotive parts and/or systems carries risk of personal injury.