 speedo stopped working |
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| dt4 |
 Apr 27 2021, 11:32 AM
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#1
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Senior Member  Group: Members Posts: 503 Joined: 26-May 19 From: England Member No.: 23,161 Region Association: England 
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I took the car for its longest trip to date at the weekend, about a 150 mile round trip
At the halfway point we took a break before setting off back home I noticed straight away that the speedo had stopped working along with the trip meter and milometer looking under the dash the cable looks to be still connected at the back of the gauge, I am unsure where the cable connects to the gear box, is there a diagram around that shows this? also is there a way of testing the cable to rule that out or is it likely to be a problem with the gauge itself or the gearbox? |
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| Shivers |
Apr 27 2021, 11:37 AM
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#2
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Senior Member Group: Members Posts: 2,378 Joined: 19-October 20 From: La Quinta, CA Member No.: 24,781 Region Association: Southern California |
There is a jacketed cable that runs to the tail of the trans. See if that came loose. You can also disconnect the cable from the back of the gauge and try to rotate the cable. If it is connected and not broken, you should not be able to rotate the inner cable much.
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| dt4 |
Apr 28 2021, 01:36 PM
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#3
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Senior Member Group: Members Posts: 503 Joined: 26-May 19 From: England Member No.: 23,161 Region Association: England
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I found that the connection to the angle drive on the gear box was loose so hoped that was the cause
I jacked the car up and put it onto axle stands then disconnected the cable at the gearbox and ran the car in first gear and could see the angle drive rotating so that looks ok I reconnected the angle drive and cable and ran the car in second gear whilst on the axle stands but the speedo still didnt work I then disconnected the cable at the speedo and did the same again, the cable didnt rotate suggesting the cable is at fault I will reconnect it all and take for a road test and if the speedo doesnt register I will first replace the cable The cables are stupidly expensive in the UK, so I may order from the US |
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| dt4 |
Jun 20 2021, 10:18 AM
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#4
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Senior Member Group: Members Posts: 503 Joined: 26-May 19 From: England Member No.: 23,161 Region Association: England
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BillJ very generously got me a new cable and added it so some parts that I was buying from him and shipped the lot over last month
I fitted the new speedo cable and all seemed good on a run to a car show today. I covered about 50 miles to the show and the speedo and odometer worked great. On he return journey the speedo worked fine but the odometer stopped clocking the miles and the trip meter stopped working also any ideas why the speedo works but the odometer has stopped? is it the gauge itself? |
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| gandalf_025 |
Jun 20 2021, 10:35 AM
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#5
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Senior Member Group: Members Posts: 1,453 Joined: 25-June 09 From: North Shore, Massachusetts Member No.: 10,509 Region Association: North East States |
I have the same issue with the wife’s 911.
I’m told you have to replace at least 1 plastic gear inside the speedo.. Not cheap, but I have to get it done before my next State Safety Inspection at the end of July.. |
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| bandjoey |
Jun 20 2021, 10:51 AM
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#6
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bandjoey Group: Members Posts: 4,926 Joined: 26-September 07 From: Bedford Tx Member No.: 8,156 Region Association: Southwest Region |
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| 914sgofast2 |
Jun 20 2021, 11:13 AM
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#7
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Senior Member Group: Members Posts: 617 Joined: 10-May 13 From: El Dorado Hills, CA Member No.: 15,855 Region Association: None |
QUOTE(dt4 @ Jun 20 2021, 09:18 AM)  BillJ very generously got me a new cable and added it so some parts that I was buying from him and shipped the lot over last month I fitted the new speedo cable and all seemed good on a run to a car show today. I covered about 50 miles to the show and the speedo and odometer worked great. On he return journey the speedo worked fine but the odometer stopped clocking the miles and the trip meter stopped working also any ideas why the speedo works but the odometer has stopped? is it the gauge itself? Sure sounds like it is the gauge itself, especially if the needle still works to indicate your speed. Can’t be the cable if the needle is working! |
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