That’s the variation learn fuel cutoff RPM (depending upon the engine), and that it’s important to release the throttle when the engine RPM starts to decrease as a result of the fuel cutoff going into effect.
Remember: That you are going to increase the engine speed to approximately 3000 RPM, 4000 RPM, or 5150 RPM. Apply the brakes and hold the pedal firmly. Make sure that the transmission is in Park. Select the crankshaft position variation learn procedure (CASE Learn)on your scanner.ĥ. Turn the engine off for at least 10 seconds.Ĥ. Start the engine and make sure that the engine coolant temperature is at least 158 degrees F. Set the parking brake and block the drive wheels.
If there is any power train trouble code other than P1336 (Crankshaft Position Variation not learned), the computer will disable the relearn function until the problem that caused the code has been eliminated.Īlso, make sure that the engine coolant (check it when the engine is cold) and oil levels are at an acceptable level.ġ. To perform the relearn, proceed as follows:Ĭonnect a scanner to make sure there are no trouble codes stored in the computer’s memory. But they're close to how it's done on most cars. These Crank Relearn Instructions may not apply to all vehicles.
