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timeless beauty
Join Date: Oct 2004
Location: Cape Cod
Posts: 660
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What's this test port for?
 Hey guys I haven't read anything about this item in the pic, is it a test port of some sort? Thanks Bob |
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03-18-2006, 07:36 PM
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Will program for food
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I think that is for the TDC reference sensor.
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Greg Hnat 87 Targa Disassembled 90 944 S2 Auto-x, DE and semi-daily driver 98 Jeep Cherokee |
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03-18-2006, 08:02 PM
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Irrationally exuberant
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Like Greg said, it goes to a TDC sensor. That TDC sensor is not connected to anything else and I've never seen a diagnostic that used it. I think it is what racers would call "extra weight".
 -Chris
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'80 911 Nogaro blue Phoenix! '07 BMW 328i 245K miles! http://members.rennlist.org/messinwith911s/ |
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03-19-2006, 04:42 AM
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timeless beauty
Join Date: Oct 2004
Location: Cape Cod
Posts: 660
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Thanks Chris and Greg, I think I'll leave the extra weight since I'm not a racer. Would it be used for valve ajustment or timming maybe??
Whatever, just thought maybe I was missing something. Thanks
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Bob 87 targa |
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03-19-2006, 08:02 AM
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Registered
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Hey guys - I'm having 3.2 starting issues (Stranded! DME Ignition Guru Help needed) and suspect my TDC/Reference sensor - are you saying I can test the sensor using this port? I thought I had to go to the 3-connector harness near the blower motor where it's wired in.
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'84 Carrera Coupe - B&B Headers and one-out muffler; K&N Cone intake; Steve Wong Chip; Euro height and corner balanced; 171K Miles (9/12) |
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04-17-2006, 09:03 AM
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Recreational User
Join Date: Mar 2004
Location: A Mile High
Posts: 4,159
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It must have an intended use or Porsche wouldn't have put it there. Is it also on the 3.0 or turbo engines?
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04-17-2006, 09:24 AM
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Registered
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I was just searching some more in the archives and ChrisBennet commented in other threads that it is actually a third sensor, not to be confused with either of the two pertinent flywheel sensors (reference position and speed) and that it's never used (only for diagnostics).
3.2 ref sensor flywheel sensor questions Of course it's only $50 as opposed to the $130 for either of the ones you actually need! D'oh!!!
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'84 Carrera Coupe - B&B Headers and one-out muffler; K&N Cone intake; Steve Wong Chip; Euro height and corner balanced; 171K Miles (9/12) |
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04-17-2006, 09:41 AM
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Registered
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Good question Bob. I don't mean to hijack, but:
Can contact closure be seen here at TDC whilst manually rotating the motor?
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'86 911 Coupe Corner bal track aligned '09 JCW Mini Cooper '94 Suzuki Carry 4x4 '07 BMW 530xi 6spd '11 Rancilio Silvia w/PID '79 280zx ported, rally cam(sold) '87 and '95 300Ds, (Sold) Wisdom begins w/ calling things by their real names; A is A. |
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04-17-2006, 09:44 AM
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Irrationally exuberant
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Quote:
-Chris
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'80 911 Nogaro blue Phoenix! '07 BMW 328i 245K miles! http://members.rennlist.org/messinwith911s/ |
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04-17-2006, 10:16 AM
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944
Jeep
911
The Blue Pheonix
