Speedometer error - sticks at 50mph and will not drop
 

Speedometer sticks at 50mph when car comes to a complete STOP. It will not drop to ZERO until 10 minutes after car has been turned off. Speedo will move up the gauge as car accelerates but is very slow to drop back down to 50mph where it will stay even at idle and completely stopped.

Off to the dealership to see what they can diagnose. My suspicion is a short somewhere within the electrical system OR ground wires.

Did some searching on the forum before starting this thread, could not find anything under key word "speedometer" in Interior\Exterior section of forum.

Enjoy the pics....funny thing with first pic. My car according to the speedometer is traveling 50mph IN THE GARAGE....haha. Large garage and BBK's???



https://lh3.googleusercontent.com/-o...0410121943.jpg


https://lh5.googleusercontent.com/-1...s800/image.jpg

Hahaha WTF. Thats so bizarre.

I first noticed the speedo error last night coming home from dinner when I blew past a Sherriff on a busy street with posted speed limit of 40mph. When I passed him I noticed the speedo was 110mph......actual speed was 40-45mph.

:eek:

So that's your story and you're stickin' to it right? :tup:

I am sorry officer, my speedometer was sticking :tiphat:

My brothers truck did this. He had to replace the hole display.

Just tape 0-40 out and make your 50 the new 0

That's weird. Your warranty is expired from the looks of your odometer, unless you have the extended warranty, do you?

This what I am finding out with my research. Pretty much if the dealer resets the ECU or disconnects the battery, the issue returns after a couple of months. Nothing works short of replacing the cluster gauge.



Extended warranty to 100k miles. This warranty will pay for itself with this part, a few others already replaced and when the steering lock goes.

The only downside is when they replace the cluster gauge they cannot reprogrammed my current mileage. Also noticed tonight when shutting off the ignition that the speedo needle only returned to 7 o'clock not 6 o'clock like it should be....

So you start back at zero.

Yeh sux, because I will always have to do some math not to mention when the day comes to sell it.

I have my suspicions as to what caused it, but with reserve that opinion until after it's fixed (replaced) under warranty.

Yes they can. The dealership will reprogram the new cluster gauge to your current mileage.