Noisy (ticking sound) from behind speedo - Team Camaro Tech
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post #1 of 7 (permalink) Old Sep 23rd, 10, 11:07 AM Thread Starter
John
 
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Noisy (ticking sound) from behind speedo

I have a 69' that very recently developed a ticking sound from behind the speedo. It doesn't seem like just a rusty cable causing a constant whining. It is a definite ticking that is high pitched, and speed related. Any thoughts?

Further, how do you remove the cable from the back of the speedo?

thanx in advance
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post #2 of 7 (permalink) Old Sep 23rd, 10, 11:34 AM
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Fred
 
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Re: Noisy (ticking sound) from behind speedo

Sounds like it just needs to be lubed... use powdered graphite.

Just pull straight back to remove from speedo... should be just a small clip holding it in.

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post #3 of 7 (permalink) Old Sep 23rd, 10, 02:48 PM
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Re: Noisy (ticking sound) from behind speedo

Yep it will be the cable, hopefully hasnt yet broken a strand in the drive cable...
Easier to unscew from the trans, pull the center out, wash down with brake cleaner or petrol/thinners..... (Do Not use oil it will kill your speedo gauge and I suspect grphite could have the same effect??? over time)
wipe grease into the cable..put back up...pull out again, check if the grease has picked up any excessive crap, wipe clean and repeat a couple times.
Wash again if needed, wipe the gease in reassemble....make sure you feel the square end drop into the back of the speedo (drops in quite easy. ...can tell when putting back on the trans...it s a bit long.
Good to go.

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post #4 of 7 (permalink) Old Sep 24th, 10, 01:54 PM Thread Starter
John
 
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Re: Noisy (ticking sound) from behind speedo

Thanx for that gents,

Drove it again today to confirm what I was hearing. Wouldn't you know it....no ticking at all this time. But wait! At around 40-50 mph and up, the needle now drifts 5 mph either side of the speed. This is new, and obviously a consequence of the initial ticking. The speedo cable is brand new, the speedo assembly is original. The assemly is probably not repairable?? I'm thinking I'll just leave it or perhaps ask for 140 MPH speedo for xmas (the car is a 427 COPO replica).
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post #5 of 7 (permalink) Old Sep 24th, 10, 03:16 PM
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Re: Noisy (ticking sound) from behind speedo

Sounds to me the cable inner is not seated into the back of the speedo correct.
I have the orginal speedo...done 300 K notning wrong with it....they are built so simple noting goes wrong with them
TIL some idiot decides to wind them back or tu tu with them.

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post #6 of 7 (permalink) Old Sep 25th, 10, 06:52 AM
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Paul
 
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Re: Noisy (ticking sound) from behind speedo

Quote:
Originally Posted by JMNowak View Post
Thanx for that gents,

Drove it again today to confirm what I was hearing. Wouldn't you know it....no ticking at all this time. But wait! At around 40-50 mph and up, the needle now drifts 5 mph either side of the speed. This is new, and obviously a consequence of the initial ticking. The speedo cable is brand new, the speedo assembly is original. The assemly is probably not repairable?? I'm thinking I'll just leave it or perhaps ask for 140 MPH speedo for xmas (the car is a 427 COPO replica).

The new cables should still be lubed before installing them, never saw any come correctly lubed when I was turning wrenches at a dealership. Most had a light film from the manufacturing process, but we still cleaned and lubed them before install.
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post #7 of 7 (permalink) Old Sep 25th, 10, 09:27 AM Thread Starter
John
 
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Re: Noisy (ticking sound) from behind speedo

Thanx for that, that's what I'll do.

cheers
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