Intermittent stall, no start - P0320, P1391 cam, crank sensor testing (Jeep)

Join me and one of my students at RTC as we troubleshoot an intermittent no start problem on a Jeep Grand Cherokee. The procedures shown in this video apply to all Chrysler, Dodge and Jeep electrical systems. In particular, the cam and crank sensor tests that we show. Symptoms - intermittent no start, no spark or injector pulse - check engine light on P0320, P1391 trouble codes - hesitation and surging Fix - replace faulty crank sensor Tests shown - how to test for cam and crank signals on scan data - what scan data Ignition Cycles can be used for - how to test the cam and crank sensors with a scope - how sample rate of a scope affects the signal - why a sensor ground is better to use than battery ground in some circumstances - how to recreate an intermittent problem - sensor power and ground tests Engine Performance Diagnostics chapter 21 Playlist - (Chapter 21) Ignition inputs, cam and crank sensors https://www.youtube.com/playlist?list=PLAFYVCyenqcqEN41aYznWn9Nfhy1PiMjo Related videos - Picoscope Basics Part 1 https://youtu.be/81AGbZcgCZs - Picoscope Basics Part 2 https://youtu.be/ntJJYhkmR4I - How to test a crank sensor (Chrysler Dodge Jeep) https://youtu.be/YtpDi2vnGog - Jeep 4.7 no start from faulty cam sensor (an SD Premium video) https://youtu.be/kRnq8uuUGOg - Faulty cam sensor setting a crank sensor code - P1389, P0320, P0622 https://youtu.be/VrsI1xCoZ8M For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at www.scannerdanner.com as an eBook or paper book. Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium https://www.scannerdanner.com/join-scannerdanner-premium.html There is a 14 day free trial. On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere! Disclaimer: Due to factors beyond the control of ScannerDanner LLC, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. ScannerDanner LLC recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of ScannerDanner LLC, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not ScannerDanner LLC.