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Decolliber's Avatar
 
Join Date: Jan 2001
Location: Iowa
Posts: 1,020
Unhappy drive without speedometer?

My speedometer is now with North Hollywood Speedometer for repair. I was wondering if driving the 911 without a speedometer would cause any electronic or electrical issues, such as the DME expecting to receive a signal from the unit. I can use a GPS for speed information.

I tried to change the odometer gear by the method recommended in a long Pelican post, and, putting it back together, snapped the shaft and the needle. I used the method of trying to remove and replace the screws under the faceplate by bending the faceplate up without removing the needle. All went well until replacing the screws back in under the plate ...
NHS told me that that is a common repair job for them. They must get lots of business from DIY speedometer repairers like myself ... *sigh*

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John C
1988 911 Carrera coupe
2002 BMW 530
Old 06-23-2014, 09:09 AM
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Join Date: Dec 2012
Location: Motor City area
Posts: 617
I (personally) do not think that it would pose a problem, as long as the connection in the tunnel (to the transmission speedo sensor) is disconnected. I am in the same place you are: I sent my speedo to NH speedo based on the suggestions from this forum - and I would drive it with out the speedo. Good point about the DME relay - my car doesn't have this.

The other thing that I would do is cover the wire connections that go to the back of the speedo.
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'The forever project car - 1979 911SC targa - getting it running right was a task, read about it here: http://forums.pelicanparts.com/911-engine-rebuilding-forum/722362-dads-911sc-i-am-finishing-rebuild-long.html
Other cars: 1993 Corvette LT-4/ZF6, polo green. 22 Ranger 4x4 with a couple cool things.
Old 06-23-2014, 09:38 AM
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Join Date: May 2002
Location: St Louis
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There are no inputs to the DME from the speedometer.
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Rick
88 Cab
Old 06-23-2014, 10:17 AM
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Join Date: May 2011
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I understand that in post 1090 911 models the speedometer is connected to a rev-limiter. That may not work with the speedometer removed. So, just watch your revs and you should b OK.
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Old 06-23-2014, 10:31 AM
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Quote:
Originally Posted by porwolf View Post
I understand that in post 1090 911 models the speedometer is connected to a rev-limiter. That may not work with the speedometer removed. So, just watch your revs and you should b OK.
His (and my) 1988 are not electronically speed limited.

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Rick
88 Cab
Old 06-23-2014, 10:55 AM
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