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Speedometer broken, but the odometer still works
Out for a drive today, and I noticed that my speedometer is pretty much stuck between 20 & 40mph. It travels really slowly between those two marks depending on car speed. At a stop light it'll drop to 20mph mark. Both odometers still work. Isn't this supposed to stop working the other way?
Thoughts? FWIW, the speedometer was working when I left this morning, don't know exactly when it stopped working..... |
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11-23-2010, 09:43 AM
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RETIRED
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Best guess, something busted inside....%^b
Pull it, mark the wiring as to what goes where and ship it to either Palo Alto or North Hollywood Speedometer for a rebuild. If you feel the need, consider a new face on it and the others to modernize the look....
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1983/3.6, backdate to long hood 2012 ML350 3.0 Turbo Diesel |
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11-23-2010, 09:59 AM
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Registered
Join Date: Oct 2005
Location: Capistrano Beach, Ca.
Posts: 7,235
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If your car is the one shown in the "garage", then you have a mechanical speedo. It could be the internals need cleaning to free up the movement of the needle/coil spring mechanism which responds to the spinning of the magnet attached to the cable from the trans. Whatever it is, it will require opening up the speedo which should be done by a professional shop, IMO.
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L.J. Recovering Porsche-holic Gave up trying to stay clean Stabilized on a Pelican I.V. drip |
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11-23-2010, 10:17 AM
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MBruns for President
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exactly what happened with mine (also a 1974)
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Current Whip: - 2003 996 Twin Turbo - 39K miles - Lapis Blue/Grey Past: 1974 IROC (3.6) , 1987 Cabriolet (3.4) , 1990 C2 Targa, 1989 S2 |
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11-23-2010, 10:57 AM
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Registered
Join Date: Dec 2009
Location: Wayne, PA
Posts: 2,010
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Mine did the same thing the other day. So I "flinked" it on the glass(plastic?) and it started working again. But since my odo is broken as well, it will be going off to North Hollywood this winter.
So just try hitting the glass to see if that loosens anything up.
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Christopher Mahalick 1984 911 Targa, 1974 Lotus Europa TCS 2001 BMW 530i(5spd!), Ducati 900 SS/SP 2006 Kawasaki Ninja 250, 2015 Yamaha R3 1965 Suzuki k15 Hillbilly, 1975 Suzuki GT750 |
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11-23-2010, 12:46 PM
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Registered User
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Yeah, I tried the flicking of the glass...no luck.
Looks like it's off to sunny CA for my speedo....thanks! |
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11-23-2010, 03:04 PM
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1974 911 Coupe
Da cab
Gone to California
Turbo
