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Jan 21, 2013 12:49:19 GMT
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So, the crank sensor for the turbo is no longer available and hasnt been for some time. There has been a lot of talk in various clubs about finding a suitable replacement. Siemens (OE manufacturer) and Porsche don't seem interested in finding one for us. Any electronic gurus on here tell me how I would go about finding a suitable replacement? I don't even know if it is a HALL or variable reluctance type of sensor. I know the obvious bits like it has to be the same diamter and legth but apart from that I am starting from nothing here. All I know is what the resistance readings should be between the three pins, oh and that mine is kaput!  Porsche part number 931.606.021.00 Siemens SME 5WK1 517 |
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Last Edit: Jan 21, 2013 12:52:16 GMT by danblez
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gruss
Part of things
Posts: 242
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Jan 21, 2013 21:41:18 GMT
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It should be a HALL type sensor if it has 3 pins. Does it have a length of wire attached to the sensor or is it just a sensor on its own? What code description have you got and have you got access to live data?
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Daihatsu Mira TR-XX
Suzuki Alto Works
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andyborris
Posted a lot
Freedom is just another word for nothing left to lose.
Posts: 2,161
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Jan 21, 2013 22:15:57 GMT
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In my experience, Hall sensors aren't that fussy about the distance between the trigger and sensor. The Hall on my BMW engine isn't the one it's meant to be, about 3 mm shorter in fact!
No problems (so far!), so I'd say just get one that'll fit in the hole, the exact length isn't so important.
And don't worry too much about voltage either, I've got a 5V sensor running on a 12V system.
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Jan 22, 2013 13:22:26 GMT
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Thanks for the replies chaps. Consensus seems to be it is an Inductance type. It has 3 wires, black (13), yellow (14) and an unsheathed middle wire which I am led to believe is the shielding ground (15).  This is what the porsche service manual states about it's operation.  I have been in touch with Siemens who say it is not a Siemens part but a Bosch one. I am failry convinced that part number prefixed by SME and the logo is Siemens though. Lots of other people around the world have tried to get to the bottom of it with Siemens without any luck. They don't seem to care much to be honest. |
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Last Edit: Jan 22, 2013 13:23:46 GMT by danblez
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Jan 22, 2013 13:43:05 GMT
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Does sound as though it's a VR sensor - a Hall sensor (as normally used in cars) wouldn't be able to give a higher output voltage as the special soft-iron tooth passes.
Best of lock - would love to be able to help but am a) very busy and b) probably not much use without a working sensor to measure.
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