Speedo quit working
Thread Starter
Instructor
Joined: Jun 2000
Posts: 148
Likes: 0
From: Chatham Ontario
Speedo quit working
With the weather getting better, it is time to start getting a few things sorted out. First on my list is getting my speedo working. This is what it did before finally quitting. The needle was pretty bouncy until it got to around 80 kmh, then it steadied out. Then it just quit. When I got into it before winter, it turned out that the cruise control unit was all locked up. Replaced the cruise, but still no movement on the speedo needle. I put the drill on the end of the speedo cable where it goes into the trans and the speedo works fine and you can hold any speed you want. I'm open to any suggestions on where to go next. I don't think I will be so lucky as to just replace the speedo cable. Is it a big job to replace the gear that the cable goes into? I am wondering if the gear got messed up when the cruise unit locked up. Any ideas?
Thread Starter
Instructor
Joined: Jun 2000
Posts: 148
Likes: 0
From: Chatham Ontario
If we go with the theory that I am going to have to replace the plastic gear on the side of the trans to make the speedo work, has anyone done this? There are plenty of videos on utube but most of these have the trans out on a bench in a shop. Has anyone done one of these gear swaps in a C3 auto still in the car? In nearly all of the vids I have watched they get tranny fluid all over the place and I am not prepared for that.
Safety Car
Joined: Apr 2018
Posts: 4,592
Likes: 44
From: Eastpointe MI
If we go with the theory that I am going to have to replace the plastic gear on the side of the trans to make the speedo work, has anyone done this? There are plenty of videos on utube but most of these have the trans out on a bench in a shop. Has anyone done one of these gear swaps in a C3 auto still in the car? In nearly all of the vids I have watched they get tranny fluid all over the place and I am not prepared for that.
Was your speedo accurate when it was working? If you end up replacing the gear, you can go up or down a tooth to dial it in better.
Last edited by DB Cooper; Mar 29, 2019 at 10:54 AM.
