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Engine Speed Sensor...

dext986

New member
Hi peeps...
has anyone heard of the Engine Speed Sensor??
I found an old thread on the web and it sounds like it will cure my mystery starting problem as the guy seemed to have the same problem and then put this on the thread.....

From what I can tell, that sensor tells the computer the speed of the crankshaft, which controls spark timing and fuel injection. In my particular case, the sensor was putting out a weak signal, which is really weak in starting conditions (low RPM, low battery). The problem was also heat related -- if the engine was cold, it worked fine. If the engine had been running for a while, it worked fine. If the engine had been running, then shut off and sat for about 20 minutes, it wouldn't work until the engine cooled down further

just can't find a lot about it and wondered how easy it was to fix?

Thanks....
 
It is the crankshaft position sensor. They are about £135 from Porsche, and the book time on a 996 is about 1/2 hour, so should be similar on a 986. It is on the side of the crankcase near the flywheel end (obviously) and should be an easy enough job if you can get it in the air?

Here you go: https://www.porscheclubgb.com/forum/tm.asp?m=612015
 
Thanks for that info.....looks like its a job I can do when I change the oil!
Hopefully this will be the end of my problems....for now!
 
Just thought I would close this thread and let you know that although not as easy a job as first thought, the sensor got changed today and car has been fine since! Starts every time, no cutting out, all seems good.
Top tip!
Part from porsche -- £175
Part direct from factory in Germany --£75,

Happy teddy!!
 
It'd be heat related, because as temperate rises, so does resistance in metals. Therefore reducing the signal transmitted.
 

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