2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

S5 pressure sensor differences

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Old Mar 20, 2004 | 12:26 PM
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S5 pressure sensor differences

Is there any difference between the S5 and S4 pressure sensors? Specifically, are the input pins the same? I ask because I noticed the upper right pin on my pressure sensor was missing from the wiring harness, this should be +12V line according to Paul Stokes' fcd guide for an S4.

I've been using the pressure sensor as the throttle input for my SAFC, so I know it is working, though it seems strange it can do so without power. Before I connect my fcd though, I'd like to know if the other pins are the same as on Paul Stokes' page.
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Old Mar 20, 2004 | 03:46 PM
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Old Mar 20, 2004 | 08:48 PM
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Ok, all I'd really like to know is if I can use the Vref signal in place of the +12V power input on the fcd. Can anyone tell me if this will work?
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Old Apr 11, 2004 | 07:19 PM
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any word here? Running into pressure sensor problems, curious if s4 and s5 n/a sensors are the same...
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Old Apr 11, 2004 | 07:48 PM
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Originally posted by incendui
Ok, all I'd really like to know is if I can use the Vref signal in place of the +12V power input on the fcd.
Absolutely, definitely not. 5V is very different to 12V...
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