[C2] Speedo cable issues
Thread Starter
Racer
Joined: Aug 2004
Posts: 442
Likes: 185
From: Zürich Switzerland
2026 Corvette of the Year Finalist - Unmodified
2025 C2 of the Year ('64-'66) Winner - Unmodified
Speedo cable issues
Recently the speedo in the 64 had quit working. Peeking behind the dash the reason was obvious. The connection to the speedo had become unscrewed. Easy fix, I thought and told the Missus to put her small long fingers to good use and screw it back on. Well, no luck, the sleeve wouldn't go over the thread.
The little pinch-on part on the cable core seems to be in the way. I can't push the core back into the cable. I can't pull it out neither. Shouldn't the core be moving freely in the cable?
The little pinch-on part on the cable core seems to be in the way. I can't push the core back into the cable. I can't pull it out neither. Shouldn't the core be moving freely in the cable?
Drifting
Joined: Jan 2018
Posts: 1,256
Likes: 316
From: Western NY
IIRC the nylon tip that inserts into the gauge is is square and may be off clock wise to the receiver in the gauge. The inability to move it within the jacket could be due to the various bends and turns it takes to the transmission generating axial drag. Spinning it out of the Muncie is way easier than at the gauge so I would do that, now it's free at both ends and you should be able to rotate the core by hand. With the cable free at both ends and the Muncie in neutral I would first try again to connect it to the gauge, it should work. Once that is done just go back under and reinstall the cable at the Muncie. Obliviously be careful not to cross thread the cap at the gauge. There is so little room under there and your sight line is usually partially obscured by other structures.
Racer
Joined: Jul 2020
Posts: 465
Likes: 126
From: Leo, IN
Others on here may know what you mean but I'm not sure what the "pinch-on part" is that you are talking about. It was challenging to screw my cable back onto the speedometer. I had to press the inner core(?) cable into the speedometer before I could begin to tighten the collar onto the threads. The other end of your cable is likely seated into the transmission and not going to move in that direction unless you unscrew it there also. Although depending on how long it's been unattached from the speedometer the inner cable may have worked it's way out of the transmission even though the collar may still be screwed on. If that's the case you probably need to unscrew the trans end and get the inner cable seated before you can attach and tighten the meter end. I'm not the most knowledgeable contributor on here however. Hopefully someone else can comment. I do think a picture of the cable end may be helpful. It may be necessary to remove the cable and lay it straight before you can slide the inner section from end to end or to pull and lubricate it.
By the way, I love the region where you live. My family came from a village two hours west of you near Bassecourt. I've visited there twice and hope to make it back at least one more time.
By the way, I love the region where you live. My family came from a village two hours west of you near Bassecourt. I've visited there twice and hope to make it back at least one more time.
Thread Starter
Racer
Joined: Aug 2004
Posts: 442
Likes: 185
From: Zürich Switzerland
2026 Corvette of the Year Finalist - Unmodified
2025 C2 of the Year ('64-'66) Winner - Unmodified
It's the half round thing I'm refering to.
I hoped I could avoid unscrewing the cable at the transmission. With a 700R4 accessability is even worse than behind the dash.
Two hours west of me is already almost a different country
Last edited by swissie; Sep 28, 2022 at 12:23 PM.
Racer
Joined: Jul 2020
Posts: 465
Likes: 126
From: Leo, IN
I see what you are talking about but I never noticed that on mine. I'm certain my inner cable wasn't that far extended out. I'm guessing you could pull the inner cable out further if you want but it won't push back in all the way because it's come out of the transmission on the other end even though the collar threads are still attached. You could test that theory by moving the car and seeing if the cable rotates. If it doesn't rotate then either it isn't pressed into the transmission or the cable itself is broken inside. Or something in the transmission is broken but that's probably the least likely cause.
