Quick question for those that have mechanical skills (unlike me).
I bought a '99 Cavalier 2 weeks ago from some girl and her boyfriend. Worked great during the test run and for 2 or 3 days after, but then it kind of went nuts. It overheats like crazy and I barely made it back home before the fluid ran out (leaking like a mofo).
My dad and I have replaced the radiator which was full of crap, and last weekend we replaced the heatercore which had been leaking. This solved a bunch of the problem, but it wasn't until we replaced the water pump gasket that things were relatively 'stable'.
As things currently stand, I can drive around in it just fine until I make it work hard. I tried driving to work yesterday and drove a little fast/heavy as I was about to pull into the parking lot. As I pulled up, the temp skyrocketed and the water seemed to boil over over my radiator overflow, leaving me with very little fluid.
I am using water as my coolant right now until we get the kinks worked out (it leaks everywhere, can't justify spending money on radiator fluid if its just going to splash out on my driveway). Anyone see a problem with this?
Does anyone have any other ideas as to what could be broken? My dad suggested we replace the radiator fluid cap as it is rather old and might not be doing it's job, but apart from that, the only thing I can think of is putting real fluid in so the boiling point of the fluid is much higher than the water, and it won't overheat to the point of evaporating/pressuring itself out.
I should also mention that the first thing we did when we started having trouble is replace the thermostat. ;D
Thanks for any help given!