Speedometer help

[joemost]

I have an old mini van... which I use for a work van.. it is a 1994 pontiac transport. Everything works great on it except for the speedometer.

The speedometer goes all crazy when I am driving it. It isnt just blank....but itll say I am going 80 mph when I am going 30. I usually just used my gps to track speed...because it actually works really well. But I can't currently get it to pass inspection because no working speedometer.

I tried replacing the Vechile speed sensor... did not have any difference on the speedometer. Any thoughts or ideas would be amazingly helpful.

Sent from my SCH-R970 using Tapatalk

[dsmuts]

Check the wiring to the gauge.

[lindseyomg]

just had a similar problem in my 2002 pontiac grand prix. get someone to check the cluster either it can be fixed my moving part of the cluster or you have to get a new one. the cluster is the part that is under the gauges it looks like the inside of a computer with the chips and all. hope i helped even though your post was from a while back