Hey all, I'm new to these cars, have had mine for 2 years now with 138k miles. Car runs amazing. With this heat wave we are having my car just randomly redlined on my way off the highway. Now after driving maybe 15min the heat gauge will shoot to red and itll start having coolant push out of the reservoir. It has no pressure until it starts over heating, so I don't believe its a blown head gasket. I'm almost 100% sure its my water pump. I checked the thermostat but looks to be running open(has none). This all said, I see no coolant at all leaking anywhere, I ran it with the radiator hose off where it holds the thermostat and It doesnt seem to be sucking any coolant down to the water pump. Im just trying to be sure before I try fixing it myself, or if I'm better off just taking it to the shop. I also cannot figure out if its a 3bolt or 6bolt water pump. Is calling a dealer with the vin the only way to know?