Speedometer problem The speedo reads approx 50% higher than actual speed! i.e. 45 @ 30 , 90 @ 60 Once you get past 140+ as displayed then the display jumps all over the place? I'm running 1050 speed triple wheels but can't see that should affect it as the sensors are on the swing arm/ sprocket respectively! Also the speedometer is from a sprint and not sure if it's compatible, Any ideas or views welcome!!

SOURCE: 99 chev express speedometer reads

check your vehicle speed sensor located at the rear of the transmission it may be faulty. What model is it and what transmission/engine do you have?

SOURCE: speedometer

EASY to fix it yourself, or by anyone you know who is handy with tools for less than $40.

This is a known issue and a class action lawsuit for the GM SUV's is already under way, but not for passenger cars (yet). The dealers will commit criminal fraud by pretending to not know whats wrong and will charge you to replace everything else first. Then rather than replace the faulty components IN the gauge cluster they will replace the entire gauge cluster for hundreds, then charge for reprogramming the old odometer readings into the new cluster. All unnecessary. If they wont give you a firm price with a guarantee to fix the problem complete the first time, just walk away.

Go to ebay and search for user MANDIGITAL or search for "speedometer" "stepper".
You can get a set of 6 replacement stepper motors for about $40, enough to rebuild every gauge, or you can even buy just ONE for less money. This guy also has a service to replace the motors for you but you still have to take out the gauge cluster to ship it to him.

These little plastic motors (the size of a ritz cracker) simply position the gauge needles by computer command. A tiny bit of soldering is required to replace each one, and you just follow the included directions. I did mine in about an hour start to finish. Works perfectly now.

Heres a dashboard disassembly with pictures.
http://impalahq.naioa.com/HowTo/Dash.html

Here the process photographed from start to finish:
http://www.sound-expressions.com/rides/avaspdrpr.pdf

Finally, for those folks peeved about GM, I will say this in their defense. These components are not made by GM, and do not fail until after 4-5 years of use. GM could not predict this. They should however, start replacing these clusters as its a safety issue. Also, it is not GM that rips you off at the dealer, its the dealer. These are privately owned franchises.

NTSB will probably get the recall to happen, but it takes time. Keep logging complaints at NTSB :)

GOOD LUCK !

SOURCE: speedometer does not work 1998 Subaru forester

Sounds that the magnetic pickup on the vehicle speed sensor has stopped working. Dirt or grease usually. That will cause an erratic reading. Also check wiring to sensor. Poor connection is rare but possible. Good luck and have a good day.

SOURCE: speedometer surging. actual speed 40 mph,

Its a loose connection on the speedo cable. its a b*tch to get to. I had the same problem on my truck, it would fluctuate in 5th gear on the highway. i spent the money and had a professional do it.

Berlyn Reed

• 492 Answers
• Posted on Mar 04, 2011

SOURCE: Nissan Maxima speedometer reads 20 mph but actual

NO, IT'S NOT THE TRANSMISSION! SOUNDS LIKE A SPEEDOMETER PROBLEM! THAT WOULD BE ONE OF THREE THINGS! EITHER THE SPEEDOMETER, THE CABLE, OR THE SPEED SENSOR! THE SPEED SENSOR WILL USUALLY GIVE YOU A P0500 CODE ON AN OBD-II CODE READER! THE SPEED SENSOR IS ELECTRONIC SPEED CONTROL LOCATED ON THE TRANSMISSION! SOME HAVE A SPEEDOMETER CABLE HOOKED TO THEM, AND SOME JUST HAVE A 2 WIRE PLUG THAT HOOKS TO IT!