Author Topic: Speedo goes tick tick tick faster as you go  (Read 3233 times)

fasterweride

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Speedo goes tick tick tick faster as you go
« on: February 01, 2009, 06:09:47 PM »
 Bought a 67 camaro with a muncie.  While doing a preflight under the car, i noticed the speedo cable was disconnected.  Hooked it back up,  took a drive and the speedo goes tick tick tick faster as you go.  Is there a fix or a replace?

tom

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Re: Speedo goes tick tick tick faster as you go
« Reply #1 on: February 01, 2009, 06:25:43 PM »
How does the speedo work? Does it jump with the tic tic tic?
69 X11 Z21 L14 glide
looking for a 69 export model (KPH) speed
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fasterweride

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Re: Speedo goes tick tick tick faster as you go
« Reply #2 on: February 01, 2009, 06:47:03 PM »
it's a little bouncy. maybe 3-5 mph

tom

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Re: Speedo goes tick tick tick faster as you go
« Reply #3 on: February 01, 2009, 06:54:27 PM »
I would pull the cable from the trans, hook it to a drill and see if the speedo still clicks. If not the problem is on the trans side, possibly a speedo gear. If it is still jumpy on the drill, could be the cable. I would inspect the cable, or just try a new cable. Beyond that probably the speedo.
69 X11 Z21 L14 glide
looking for a 69 export model (KPH) speed
o

fasterweride

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Re: Speedo goes tick tick tick faster as you go
« Reply #4 on: February 01, 2009, 07:01:23 PM »
Thanks for the help.  I'll try that.

JohnZ

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Re: Speedo goes tick tick tick faster as you go
« Reply #5 on: February 02, 2009, 06:19:15 PM »
Thanks for the help.  I'll try that.

Run the drill in REVERSE.
'69 Z/28
Fathom Green
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69Z28-RS

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Re: Speedo goes tick tick tick faster as you go
« Reply #6 on: March 10, 2009, 06:59:08 PM »
lubricating the cable (*suspended graphite powder) will usually (sometimes?) correct that problem.....
Gary W / 09C 69Z28-RS, 72 B 720 cowl console rosewood tint
69 Corvette convertible, silver/black 350 hp,
60 Corvette white/red, 72 Corvette coupe, '70 Mach I 
90 ZR1 red/red #246, 90 ZR1 white/gray #2466
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SH69Z28

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Re: Speedo goes tick tick tick faster as you go
« Reply #7 on: March 10, 2009, 08:45:38 PM »
Had this problem with a brand new GM speedo cable. The clicking sound was more of a groaning sound in my case. Anyway, disconnected the cable at both ends, pulled the center section all the way out and carefully applied liquid graphite cable lube every inch or so as I fed the core back into the cable jacket. Problem solved.
69 Z/28 Fathom Green, mostly correct with chassis broadcast sheet
69 Z/28 Dusk Blue, incorrect drive train, my driver

JohnZ

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Re: Speedo goes tick tick tick faster as you go
« Reply #8 on: March 13, 2009, 12:00:41 AM »
Corvette Central sells the liquid graphite cable lube - it's called "Kable-Ease"; one tube will last you a lifetime. :)
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