Hello, long time since ive been on here. But here goes. This morning i left my house and my speedometer was off by 20 miles, (faster). Also i had a problem with where it shows my actually miles. My car has aprox 120k miles. And for some reason my odometer skipped to 191kmiles. What would cause this. The speed ometer seems to be about the right speed now. It was like 10 degrees this morning could it have been the cold? But this thing with Milage odometer really drops my car if i wish to sell it. Cause the odometer is liaing