Speedometer stop working today

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Rudy913

G-Body Guru
Feb 26, 2016
646
68
28
New Orleans
what may be the cause of this ? I notice like a week or two when I hit 60 to 70 It start ed going back and forth ,but now today it doesn't work and stuck on 0
 

Longroof79

Rocket Powered Basset Hound
Oct 14, 2008
12,174
9,776
113
Gainesville, Fl
Bad cable?
 
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mobileaudio25

G-Body Guru
Jan 12, 2012
518
161
43
columbus, ohio
Is the cable easy to change ?
You have to pull the dash bezel out and get behind the speedometer itself. I would pull the speedometer out, unhook the cable from the speedo and see if you can twist the cable manually with your fingers. You shouldn't be able to rotate it. The cable is routed from the speedometer to the tailshaft housing on the transmission. Not a hard job at all. Could be a little time consuming if you haven't ever taken everything apart before
 
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STLRegal

G-Body Guru
Jun 22, 2007
636
129
28
St.Louis
Just replaced my speedometer cable earlier this week. Assuming it is the cable here that is the problem here are the best steps I can provide in writing. Make sure to rule out any other possibilities before replacing it. My car is a column shift with sweeping style needle, so if yours is different take this for what it's worth.

1. Disconnect cable from the trans side
2. If your car has a tilt column tilt it all the way down. Remove gauge plastic trim, it should just pull right off but be gentle and try to pull it off evenly.
3. If you have a column shift remove the black speedo trim and clear plastic. Screw heads are 5.5mm
4. Disconnect the gear selection needle from the housing by pulling the little spring off of the plastic gauge housing. I just let mine hang off the cable it's attached to.
5. Unscrew the two 7mm screws from the trim piece below the steering column that allow you to drop the column. (You don't need to actually drop the column)
6. Unscrew the 8 or so 7mm screws that hold on the bezel. Remove the bezel.
7. There are 4 more screws that are 7mm that hold the the gauge cluster in. Remove these.
8. Pull the gauge cluster forward and out of the housing. You might need to get under the hood and push the speedo cable into the cab to help give you room to get behind it. (Be gentle on the back as the back of the cluster has the electrical wiring board plastic stuff on it.)
9. There is a clip that holds the speedo cable on the cluster. Reach down from directly above it ( at 12 o'clock position). Press this clip in and twist and pull the cable off.
10. Connect your new cable till it clicks or is firmly in place and won't pull off and reassemble in reverse of these steps.

Here are also some things to remember and some tips of things I wish I had done to make my life easier.

Make sure you pull the cable spring completely out of your new cable and lube it up. I used basic ball joint grease so there are probably better lubes to use. But it seemed to work for now.

When you disconnect the cable from your trans just leave it where it hangs. I'd tie the trans side of the old cable to the speedo side of the new cable using string or para cord. This way you can just pull your old speedo cable out from under the hood while routing your new cable in the factory way.

Once you have it pulled from under the car and into the engine bay. Cut the old speedo cable off maybe a foot or more away from the firewall using snips or pliers. Pull the rubber grommet from the firewall and place it on your new cable. Once you have the grommet on your new cable. Move it down far enough so you got some slack to work with. ( I had to cut a slice into the grommet to get it to fit.)

Once again tie the cut end of the old cable to the new cable using string and probably some tape. Then go into the drivers seat and pull the old cable out through the dash until you pull the new cable to where you can attach it to the cluster. Reinstall the grommet.

Sorry it's a bit long winded but I hope this helps you out.
 
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pontiacgp

blank
Mar 31, 2006
29,270
20,391
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Kitchener, Ontario
Yea my tires are rubbing how can that cause it ?

it can't, I posted that cause you left us hanging in your thread about the tire rub...:p

for a speedo it usually gives you some indications something is wrong before it stops working, like a squeak or the needle is bouncing
 

Rudy913

G-Body Guru
Feb 26, 2016
646
68
28
New Orleans
it can't, I posted that cause you left us hanging in your thread about the tire rub...:p

for a speedo it usually gives you some indications something is wrong before it stops working, like a squeak or the needle is bouncing
Yeah the needle was bouncing
 
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