How to check your crankshaft position sensor on a BMW 740 (e38)

Here I show how to test the crankshaft and camshaft position sensors on a BMW 740i by measuring their coil resistances. You should measure around 500 ohms across the coil pins of the crankshaft position sensor, and roughly 1,000 ohms on the camshaft position sensor coil. Your E38 will not start unless the DME sees the proper pulse train from the crankshaft position sensor. The symptoms will be identical to a bad fuel pump. This is a safety measure to ensure that the fuel being pumped is actually being burned, (inside the cylinders) and not spilling out on the ground after a bad collision, for example. I should add, as youtuber "Hueristic" pointed out, that this is only for the 95, the Crank position sensor on later models is in a different location near the transmission. You need to get to it from underneath. For more info and pics see the following link: http://www.bimmerboard.com/forums/posts/1079582/

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How to Test Crankshaft and Camshaft Position Sensors
Here is how you can easily test both your crankshaft position sensor and camshaft position sensor. It's very important to be able to test these sensor since because they control your ignition and fuel injector pulse and if they fail they could cause a Crank No start condition. Multimeter used in this Video: http://amzn.to/2aWpN8E Please consider supporting this channel: https://www.patreon.com/Ratchets Facebook: https://www.facebook.com/Ratchets2015 Twitter: https://twitter.com/Ratchets15 Instagram: https://www.instagram.com/ratchetsandwrenches Here are some other video's you may find interesting: How to diagnose a No Crank No Start Condition: https://youtu.be/2RUhq7sXNBo How to test a Mass Air Flow Sensor: https://youtu.be/a6eaOd3ihiE How to test Fuel Injectors: https://youtu.be/Sfq-fM3-TIk How to test a Throttle Position Sensor: https://youtu.be/9IUtl6J5F5s If this video helped you out please don't forget to subscribe, give it a thumbs up or if you are feeling generous leaving a tip by clicking the " i " button on the top right corner of the screen. Thank you very much for your support! Disclaimer: Due to factors beyond the control of Ratchetsand Wrenches, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. Ratchetsand Wrenches assumes no liability for any property or personal damage that may arise from doing a repair on your vehicle after watching any of my repair video's. Due to factors beyond the control of Ratchetsand Wrenches, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Again Any injury, damage or loss that may result from improper use of tools, equipment, or the information contained in this video is the sole responsibility of the user and not Ratchetsand Wrenches.





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