Speedometer not working

1991 NISSAN MAXIMA
214,000 MILES • 3.6L • V6 • 2WD • MANUAL
Avatar
HHUGHES0320
  • MEMBER
  • 2 POSTS
I have previously replaced the whole instrument panel about 5 years ago.
the speedometer is not working, tachometer is good.
odometer is intermittent.
Nov 2, 2020 at 2:39 AM
Advertisement
Avatar
KASEKENNY
  • ✓Experienced Mechanic
  • 18,907 POSTS
More then likely this is the speed sensor or cluster. So we need to test the speed sensor as shown and if it passes then we need to suspect the cluster again.

Let's do this test and go from there. Thanks
Image (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Nov 2, 2020 at 9:34 AM
Avatar
HHUGHES0320
  • MEMBER
  • 2 POSTS
Hello, I took the speed senor out and put it on a multimeter set for AC.
I could spin the gear and see that it was generating a AC voltage.

The speedometer and odometer are not working and the needle for the speedometer is not at zero mph, but buried on the right side of the dial at about 5:30pm.

I can take the cluster out and look at it. any strategy there?
clean contacts, put the needle back on left side?
thanks for your help and assistance.
Howard
Nov 2, 2020 at 9:24 PM
Avatar
KASEKENNY
  • ✓Experienced Mechanic
  • 18,907 POSTS
Okay. Assuming the sensor is generating the correct signal, I would just replace the cluster. You may be able to take it apart and try to clean contacts but I don't have a process for that nor have I done it. In fact, anytime I have had an issue with a cluster, I just replace it and don't even spend the time to try to make a repair to it.
Image (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Nov 3, 2020 at 9:34 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.