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Join Date: Aug 2003
Location: Austin, Texas
Posts: 717
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Chip on the back of my speedo
I just recently fixed my odometer, and while i was back there, i noticed this little PC board that was attached to the back of my speedo (it's actually broken in half) and I was wondering, what does that board do/connect to? is it for the cruise control?
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08-26-2003, 08:33 PM
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Join Date: Sep 2001
Location: berkshire uk
Posts: 1,697
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thats so the government can monitor your movements throughout the US
to defeat it wrap kitchen foil around your head
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----------------------------------------------------------- The fear of God is the begining of wisdom <>< NotJustPorsche Subscribe: notjustporsche-subscribe@yahoogroups.com |
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08-27-2003, 06:13 AM
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Foil? Darn! I've been using plastic wrap!
What year car? P.S. Add your cars description to your signiture line in the personal profile area of the board. Helps us determine how many layers of foil you will require. 
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Hugh - So Cal 83 944 Driver Person NOT a 'real' Porsche -- Its Better!!!! When was the last time you changed your timing and balance belts and/or cam chain and tensioner? New Users please add your car's year and model to your signature line! Never break more than you fix! |
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08-27-2003, 08:47 AM
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Location: Austin, Texas
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i have an '85 944, and, after opening up my speedo last night, (i fixed my odometer) i realized my speedo is totally different from the one on the pelican parts technical articles. but, anyway, any ideas on the PC board on the back of the speedo?
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'82 928S  '85.0 944 Not Awesome - Being Parted Out 
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08-27-2003, 09:25 AM
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Early 85 with the square three hole dash. The circuit board on the back of the speedo is for the miles per gallon indicator in the tach. This could still be working even though the pc board is cracked.
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Hugh - So Cal 83 944 Driver Person NOT a 'real' Porsche -- Its Better!!!! When was the last time you changed your timing and balance belts and/or cam chain and tensioner? New Users please add your car's year and model to your signature line! Never break more than you fix! |
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08-27-2003, 09:41 AM
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Location: Austin, Texas
Posts: 717
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anyway...
so... that means my mpg gauge is not reading correctly? or what exactly does that board do?
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'82 928S '85.0 944 Not Awesome - Being Parted Out
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08-27-2003, 03:28 PM
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If the MPG gauge is working then the cracked board (this just may be where the manufacturer seperated a bunch of boards) is working. This is a work or not work item.
The board is a multiplexer for the hall effect sensor in the speedo. A miles per gallon gauge has to get the current cars speed from some where. The rest of the info is from the DME. Most likely a value based on how long the injectors are opening.
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Hugh - So Cal 83 944 Driver Person NOT a 'real' Porsche -- Its Better!!!! When was the last time you changed your timing and balance belts and/or cam chain and tensioner? New Users please add your car's year and model to your signature line! Never break more than you fix! |
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08-27-2003, 05:59 PM
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Join Date: Sep 2001
Location: berkshire uk
Posts: 1,697
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Quote:
hey mate, it is in the signature, 91 944 s2 cab...........read my signature foil, 2-3 is best or 1 layer 2" thick LOL
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----------------------------------------------------------- The fear of God is the begining of wisdom <>< NotJustPorsche Subscribe: notjustporsche-subscribe@yahoogroups.com |
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08-29-2003, 07:10 AM
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Funny- I have the same "Hall effect" sensor on my speedo, but no MPG gauge on my dash..On the 924s I mean.
How Odd..
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TENSION YOUR SOCKS! 88 924S Guards/ Black ~ 10 years as a Daily Driver and STILL SMILING! 87 NA Diamond Blue Metallic ~ Gone |
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08-29-2003, 07:26 AM
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Quote:
__________________
Hugh - So Cal 83 944 Driver Person NOT a 'real' Porsche -- Its Better!!!! When was the last time you changed your timing and balance belts and/or cam chain and tensioner? New Users please add your car's year and model to your signature line! Never break more than you fix! |
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08-29-2003, 07:36 AM
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1983 Porsche 944 2.5 liter
1988 Porsche 924s 2.5L
