During the winter months I would start my car to let it warm up for about 20 minutes. When I got in it, I noticed the "low coolant" light was blinking. I checked the coolant and it appears to be fine. Also my speedometer sticks on about 45. When I stop it sometimes goes zero or stay stuck on 45. If it goes to zero and I start to drive again, it rapidly goes back to 45 and stays. Anyone have any ideas what could be wrong?
Thanks