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Topic: Speedo needle bounce!

in Forum: C3 Driveline Components


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Speedo needle bounce!

Posted: 8/28/06 12:41pm Message 1 of 13
BigJohn233
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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.


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Speedo needle bounce!

Posted: 8/28/06 12:50pm Message 2 of 13
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Adams' Apple
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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.


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Speedo needle bounce!

Posted: 8/28/06 12:57pm Message 3 of 13
art-corvette
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indeed most likely you need to put some grease inside the cable .

good luck

art-corvette



Speedo needle bounce!

Posted: 8/28/06 12:58pm Message 4 of 13
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tuxblacray
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Greensburg, IN - USA
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Check this link...
http://www.c3vr.com/forum/forum_posts.asp?TID=61570&KW=speed ometer+cable


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Speedo needle bounce!

Posted: 8/28/06 1:04pm Message 5 of 13
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Adams' Apple
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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
CLICKABLE LINK for above post.


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"

Speedo needle bounce!

Posted: 8/28/06 1:14pm Message 6 of 13
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tuxblacray
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Greensburg, 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..

Speedo needle bounce!

Posted: 8/28/06 3:11pm Message 7 of 13
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Gunslinger
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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.


Speedo needle bounce!

Posted: 8/28/06 4:02pm Message 8 of 13
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Adams' Apple
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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
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?


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"

Speedo needle bounce!

Posted: 8/30/06 11:45am Message 9 of 13
BigJohn233
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 Thanks again all!  Will put the cable on my must do next list!




Speedo needle bounce!

Posted: 8/31/06 4:14am Message 10 of 13
vettedreams79
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Grand Blanc, MI - USA
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Vette(s): 1979, 350sb, as my kids affectionately call it "shit brown" Corvette purchased in 1996. 84,000+ miles. Not a show car, but I love her just the same.
Sure would like to see a pic of that there Vette, Big John!


in Forum: C3 Driveline Components


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