Troubleshooting Yukon: Crank and Cam Position Sensors

:wrench:Replacing the crank and cam position sensors fixed the starting issue.

:exclamation:Symptoms of a bad crank position sensor include loss of RPM, fluctuating RPM gauge, and no sparks to the spark plugs.

:wrench:It is important to diagnose and troubleshoot engine issues accurately before replacing parts.

:exclamation:In some cases, a bad cam position sensor can cause similar symptoms as a bad crank position sensor.

:exclamation:The hosts plan to rebuild the entire engine and add a turbo to the Yukon in the future.

What are the symptoms of a bad crank position sensor?

—Symptoms include loss of RPM, fluctuating RPM gauge, and no sparks to the spark plugs.

How did the hosts diagnose the issue?

—Based on the symptoms and their previous experience with a similar issue on the Colorado, they suspected the crank position sensor.

Did replacing the crank position sensor fix the problem?

—Yes, replacing both the crank and cam position sensors resolved the starting issue.

What are the future plans for the Yukon?

—The hosts plan to rebuild the entire engine and add a turbo to the vehicle.

What other potential causes should be considered for a starting issue?

—Other possible causes include a faulty ignition switch, fuel pump, or battery.

00:00The hosts discuss the starting issue with the Yukon and suspect a problem with the crank position sensor.

01:45After replacing the crank position sensor, the hosts test the starting of the Yukon.

02:30The hosts discuss the symptoms of a bad crank position sensor and its potential impact on sparking.

03:55The hosts highlight the importance of accurately diagnosing engine issues before replacing parts.

04:30The hosts replace the cam position sensor as well, as it can cause similar symptoms.

06:00The hosts express their plans to rebuild the entire engine and add a turbo to the Yukon in the future.