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My Speedo needle bounces between 5 and 10 MPH depending on speed. The Speedo was checked and certified as good and there is a new housing on the ST-10 4 speed. Anyone got any ideas? Haven't pulled the cable to check the ends.Be the first to like this post
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Check/lube the cable first. That is the most likely culprit. The only other problem area that you haven't checked would be the gears on/in the trans itself, or the ratio adaptor, if your car has one.
Oh...and the cruiz control transducer, if you have cruiz.
I'd go with the cable as the main suspect.
Oh...and the cruiz control transducer, if you have cruiz.
I'd go with the cable as the main suspect.
Joel Adams
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indeed most likely you need to put some grease inside the cable .
good luck
art-corvette
good luck
art-corvette
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Send PMGreensburg, IN - USA
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Vette(s): Previous: 1984 Coupe, 1988 Maroon Coupe, 1989 Coupe, 2001 Roadster Present: 1967 Stingray Roadster, 1976 Stingray Coupe, 1989 Roadster..
Check this link...
http://www.VetteRegistry.net/forum/forum_posts.asp?TID=61570&KW=speed ometer+cable
http://www.VetteRegistry.net/forum/forum_posts.asp?TID=61570&KW=speed ometer+cable
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Duncanville, TX - USA
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Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
Am-Fm/map light National/Regional/Chapter NCRS "Top Flight"
#2-1985 Bright Red/Carmine Cp.L-98/auto
Member: NCRS, NCRS Texas, Corvette Legends of Texas
Joel Adams
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"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
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Send PMGreensburg, IN - USA
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Send PMFrederick, MD - USA
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Vette(s): 1969 convertible L71 427/435 4-speed black interior
With my '78 a couple of years ago I had the same problem. In my case it was the transducer for the cruise control. As already said, check and grease the cables. If that doesn't do it, the transducer is the likely culprit.
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Duncanville, TX - USA
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Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
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#2-1985 Bright Red/Carmine Cp.L-98/auto
Member: NCRS, NCRS Texas, Corvette Legends of Texas
Ya know, after I said that about the cruiz, it hit me that this is a 4spd car. 
I'm not 100% sure, but I don't think the 'Vettes had a cruiz w/standard tranz until the '84s came out with the Nash/Trash units.
Anybody confirm or deny this rumor?
I'm not 100% sure, but I don't think the 'Vettes had a cruiz w/standard tranz until the '84s came out with the Nash/Trash units.
Anybody confirm or deny this rumor?
Joel Adams
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Thanks again all! Will put the cable on my must do next list!
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in Forum: C3 Engines, Driveline and Handling
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