If you have not found anything broken or cracked, take the radiator cap (on the plastic reservoir) to your local garage and have it pressure tested. The cap may be bad. Make sure that you find the problem before you drive again. 250F is too Hot. Were your cooling fans running? Scott Mueller DMCNEWS 002981 DOA 5031 -----Original Message----- From: noflux@xxxx [mailto:noflux@xxxx] Sent: Sunday, June 03, 2001 2:40 PM To: dmcnews@xxxxxxxxxxxxxxx Subject: [DML] GREAT SCOTT IT'S HOT Hello everyone, I just got my AC up and running today and I had been using it. The temp today was about 87f. I went for a drive (about 20 miles) and when I got home I was in the driveway and I had my car idling for about 4 min with the AC on. ( I got busy talking with my dad) Then I heard a big splash on the ground at the rear of the car below the plastic header bottle (Plastic Overflow Bottle)