Crankshaft position sensor connector

  • 2 POSTS
  • 2006 MERCEDES BENZ ML500
  • 5.0L
  • V8
  • AWD
  • 130,000 MILES

Would you please tell me if you have a video on replacing or repairing a loose connector for this sensor? I have already replaced the sensor, but the connection is loose and causes intermittent engine shutoff, then I have to wiggle it to make it work.
Thank you.

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have the same problem?
Saturday, April 22nd, 2017 AT 5:12 PM

1 Reply

  • 29,775 POSTS

There probably is not a video for this because the job is too basic. The first thing to look at is if you can get a pick in there beside the terminals, to squeeze them tighter. The next thing would be to get a connector from a car in a salvage yard. That will have wires of the same color so you will not mix them up. Also, auto parts stores have huge books showing almost every replacement connector that is available. They will have the common ones in stock. The rest they will have to order. The wire colors could be different. If they are, you must just go by their locations in the plug.

Do not even think about splicing the wires with crimp-type butt connectors. If you think you have an intermittent problem now, just wait until water gets into those. Instead, slide on a 1" piece of moisture-proof heat-shrink tubing onto one of the wires. Strip about 1/4" of insulation from the ends of both wires. Slide the strands of wire into each other, press down any sharp ends that are sticking up, then solder the connection. Check again for sharp points. Press any down with a pair of pliers. Slide the heat-shrink tubing over the splice, then warm it with a match or hot air gun until the sealant oozes out. Do not keep the heat on it too long or the tubing will melt and split apart. Twisting the wires together, like we do with house wiring, is not a good way to make a splice. You will still want to solder the connection, but then sealing it becomes almost impossible. Also, never use electrical tape on a car. It will unravel into a gooey mess on a hot day, and from the heat of the engine.

Auto parts stores and new-car dealer's parts departments have the moisture-proof heat-shrink tubing. You may not find it at some hardware stores.

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Saturday, April 22nd, 2017 AT 7:46 PM

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