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Speedometer recording at half speed
I just received my speedometer back from a reputable repair shop and I'm not sure what I'm doing wrong. It seems like it's registering speed but at half the speed that I am traveling.
Please see image below for wiring. I did a comparisons of the wiring when I took it out and it appears to be the same to the image that I have attached.  The speedometer was sent out to repair the odometer gear and speed was not an issue. Last edited by zl0ca; 03-26-2016 at 12:45 PM.. |
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03-26-2016, 12:36 PM
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Registered
Join Date: Oct 2008
Location: Nash County, NC.
Posts: 8,508
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You migh have lost half the magnets on the drive on the trans or the sensor on the outside of the trans is defective
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03-26-2016, 12:59 PM
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Why did you have it repaired to begin with? What is the year and model of your car?
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03-26-2016, 01:24 PM
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Registered User
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Quote:
Odometer gear went bad. 1983 911 |
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03-26-2016, 01:28 PM
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Insert Tag Line HERE.....
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Since you have the white/red wire, you should have the mileage counter for the emission's light. Take a pic of the back of the speedo so I can see what terminals the wires are plugged in to. Should be stamped in the white plastic part. like a '+' or 'A' symbol, etc..
EDIT... I can see the markings now on a bigger screen vs my phone.. The connections look correct but you cant tell by looking at the brown/red ones. The only thing that you can try, would be to swap the two brown/red wires with each other or ohm the wires from the sensor where it connects inside the shift linkage cover and make sure the green wire attaches to the terminal in-between the A and - terminals. Last edited by rattlsnak; 03-26-2016 at 07:41 PM.. |
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03-26-2016, 07:34 PM
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aircooled addict
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DON FIX IT! you have the perfect excuse out of any speeding ticket ! :P
__________________
someday I will actually get to drive a 911 |
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03-27-2016, 04:33 AM
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Banned
Join Date: Aug 2010
Posts: 4,682
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Quote:
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03-27-2016, 08:29 AM
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Haha. So from the looks of it the speedo will be going back to the shop for repair. L |
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03-27-2016, 01:43 PM
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aircooled addict
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Quote:
__________________
someday I will actually get to drive a 911 |
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03-27-2016, 01:56 PM
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Is the odometer working correctly?
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03-30-2016, 08:48 AM
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I sent it back to the shop. |
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03-30-2016, 09:16 AM
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78 Porsche 911 Turbo
1972 porsche 72 rsr clone
1995 porsche 993
1995 porsche 993
1990 porsche C2 911
1966 porsche 911
1984 Porsche 911
2003 Porsche 996
84 rescue
