Need help finding coolant leak on 1999 Pontiac Grand Prix
I've got a 1999 Pontiac Grand Prix 3.8 Supercharger which has had some odd coolant issue for a while. About two months ago I noticed the car seemed hot when running and especially when idling, but the thermostat didn't show anything to be worried about. One day I noticed a small puddle of coolant under the car and after doing research online figured it must be the thermostat, so I replaced it and the gasket, which seemed to help. Now I can see the temp going up to 180F, then dropping down. The problem is that the last couple of days I've seen a lot of coolant under the car. My husband put the old temp gasket back on (not sure why, he seems convinced it was in better condition than the brand new one) and now when we stop and park in the driveway coolant practically gushes out. The thing is, it doesn't seem to be coming from that gasket but above it. I think the fluid is coming from what I would call the top of the engine, near the transmission fluid dipstick, but I can't be 100% sure. Before we get to digging in there can anyone give me some ideas on what to look for? The coolant itself looks fine, no discoloration, though it is a little over full (miscalculation on my part). After the car sits for about 60-90 seconds the dripping stops. Thanks for any help you can give.