2009 Mazda B2300 Q&A
2009 Mazda B2300 Question: Speedometer quits after half hour of continuous running on highway.
When running at 60 t0 65 MPH the Speedometer Needle will start to go down eventually ending up at 0 MPH. I am able to monitor the speed by watching the Tachometer. Does anyone know why this is happening? The local dealer does not believe that this is happening as it does not happen when the truck is taken to them for service - Dismount
Its not really about believing it, its having an effective way to get it to happen and allow the testing to be performed. When the speedometer acts up, does the odometer keep counting, and appear to be accurate? Can you still use the cruise while the speedometer is dead? Once it acts up does cycling the key off, and then back on get it to work again? Did they try and pull codes from all of the modules? Would it be possible to arrange for them to look at it right away when the speedometer quits the next time? If so once it acts up, don't shut it off. - cardocIII