2G Speedometer issue

[John Miller]

Hello fellow DSM addicts!!

I recently discovered an issue dwelling in the depths of my speedometer. When ever I turn the key on or when the car is running, the speedo will read 40-60mph even though I am at a dead stop. Now I can not drive this car (need to rebuild front suspension ect ect....) so I have no way of telling if it calibrates speed at all. So my question is how to solve this and what would be causing that issue.

Thanks!!

 

[JeffGS-T97]

Your speed sensor device is in your transmission. They are notorious for going bad. I changed mine once so far i did it while I was in there changing my clutch and flywheel. My speedometer dropped to zero permanently when mine went out.

Here's a small diagram

 

[Yorch]

Como puedo saber o checar simi sensor de velocidad sirve

 

[Fyke]

Hello fellow DSM addicts!!

I recently discovered an issue dwelling in the depths of my speedometer. When ever I turn the key on or when the car is running, the speedo will read 40-60mph even though I am at a dead stop. Now I can not drive this car (need to rebuild front suspension ect ect....) so I have no way of telling if it calibrates speed at all. So my question is how to solve this and what would be causing that issue.

Thanks!!

My experience with this has always been the gauge itself actually being the culprit if it wont come back down to 0. If you have a known good cluster to swap that is a quick check, also may be worthwhile to pull the speed sensor from the transmission and check the gear on the end and verify everything is there and intact. With the key on you can have someone spin the speed sensor to mimic driving and verify its operation.

 

[spyderdrifter]

What I think is the issue, is either A) your VSS is bad, or B) the previous owner pulled the speedo needle off the gauge and it is no longer calibrated. The cheaper solution is probably replacing the gauge with a known good one. If you need one, PM me. If that doesn't solve it, get a new VSS.

 

[Gueburah]

What I think is the issue, is either A) your VSS is bad, or B) the previous owner pulled the speedo needle off the gauge and it is no longer calibrated. The cheaper solution is probably replacing the gauge with a known good one. If you need one, PM me. If that doesn't solve it, get a new VSS.

Hi, that's exactly what happened to me. Do you know if I can recalibrate the needle?
Thank you very much.

 

[spyderdrifter]

Hi, that's exactly what happened to me. Do you know if I can recalibrate the needle?
Thank you very much.

You can probably calibrate it by having a scanner of some sort plugged into the OBD port that reads live data. I have a scanner like that and in the past I have set my cruise to like 40mph on the scanner, and placed the needle at the same speed. This was all while driving, so it's not something I'd recommend as "safe", but it is doable if you take someone with you that can maybe assist in steering while you place the needle. Just an option. I really don't know any other way aside from doing the exact same thing on a dyno.