Speedo Question
Thread Starter
Melting Slicks
Joined: Sep 2011
Posts: 3,372
Likes: 215
From: Peoria Arizona
Speedo Question
The speedometer in our '77 has not worked since we purchased the car last fall, but it has been in progress and not driven more then a few blocks for test drives until this week.
On the way to have new tires put on last Thursday, movement in the speedo caught my eye. I noticed when I took off from a stoplight that it actually worked in first gear up until about 20mph or so, then would fall back to zero. It did this a few times. I did not notice movement as my speeds increased, but I was watching the road and didn't really pay attention closely at speed.
Is it possible the speedo is just dirty or something?
oh - the car is a 4spd, single cable from trans to dash. The gear in the trans is in good shape (rebuilt the transmission last fall). The outside casing of the cable is not in the best shape where it connects to the trans, but did appear to spin freely when it was apart.
Any ideas?
Thanks in advance,
Adam
On the way to have new tires put on last Thursday, movement in the speedo caught my eye. I noticed when I took off from a stoplight that it actually worked in first gear up until about 20mph or so, then would fall back to zero. It did this a few times. I did not notice movement as my speeds increased, but I was watching the road and didn't really pay attention closely at speed.
Is it possible the speedo is just dirty or something?
oh - the car is a 4spd, single cable from trans to dash. The gear in the trans is in good shape (rebuilt the transmission last fall). The outside casing of the cable is not in the best shape where it connects to the trans, but did appear to spin freely when it was apart.
Any ideas?
Thanks in advance,
Adam
Race Director
Joined: Apr 2011
Posts: 11,183
Likes: 3,334
From: North of Toronto - Ontario
Inner cable could be broken and the two ends rub together enough at low speeds to give a reading.
Disconnect it from the trans and hook a drill onto it and see if it works that way and at what speeds
I'm not sure on the one piece cables but you may be able to pull the inner cable out and check the condition
HIH
Mooser
Disconnect it from the trans and hook a drill onto it and see if it works that way and at what speeds
I'm not sure on the one piece cables but you may be able to pull the inner cable out and check the condition
HIH
Mooser
Thread Starter
Melting Slicks
Joined: Sep 2011
Posts: 3,372
Likes: 215
From: Peoria Arizona
Inner cable could be broken and the two ends rub together enough at low speeds to give a reading.
Disconnect it from the trans and hook a drill onto it and see if it works that way and at what speeds
I'm not sure on the one piece cables but you may be able to pull the inner cable out and check the condition
HIH
Mooser
Disconnect it from the trans and hook a drill onto it and see if it works that way and at what speeds
I'm not sure on the one piece cables but you may be able to pull the inner cable out and check the condition
HIH
Mooser
Ahh... that hadn't crossed my mind. Great thought! Guess I'll be climbing back under this thing
Thanks!
Adam
