How do you perform a crankshaft position relearn?
- Turn off all of the accessories.
- Accelerate the vehicle to 55 mph at part throttle.
- Cruise at 55 mph for another 5-6 minutes.
- Decelerate to 45 mph without using the brakes, and maintain 45 mph for 1 minute.
- Perform 4 deceleration cycles, without using the brakes, of 25 seconds each where no specific speed is necessary.
What is a crank relearn?
A crank relearn is a process that the PCM goes through to recalibrate its knowledge of the relationship between the crankshaft and camshaft. That’s necessary because the crank and cam are connected by a timing chain or timing belt.
Why does my car not start with a new crankshaft sensor?
A new crankshaft sensor should not have prevented the vehicle from starting. The cause of the no start issue is either related to a fuel or ignition issue that the vehicle has or something that happened during the replacement of the crank sensor.
Why does my Jeep not want to start when engine warm?
Jeep has 132000 mi which should not be an issue. I have noticed a few times that a warning saying” Transmission over temp” after turning the keys off. Its very brief and have to pay attention to catch it. There is not check engine light.
What happens when crankshaft position sensor ( CKP ) fails?
If the sensor (CKP) has failed completely, then the computer won’t send any fuel to the injectors. Consequently, Leaving you unable to start the car. A Crankshaft Position Sensor (CKP) Failure may cause the check engine light on your dashboard to come on.
Why does my car not start after warm?
Car will sometimes not start after warm. When i start my car, for the first time during the day- I have no problem. When I go somewhere and shut it off, sometimes it won’t resatrt. It doesn’t seem to matter what the weather is outside, it just does it when it feels like it.
https://www.youtube.com/watch?v=Zy0RBGP_8hQ