My thermostat goes up and down for no apparent reason. I have a new radiator and my water pump does not leak so not really sure what's the problem. I drove like 16 miles today and it didn't not fluctuate. But I came back home and parked for a while then I left again to drive maybe less than a mile and the needle went up really high when I was in the drive through. Then I left the line to go park, by the time I got to put it in park it was back to normal again. I need help.
Apr 14, 2016 at 5:01 PM