I have a 1998 LeSabre with the 3.8 engine. I was driving it today, and I experienced missing, bucking, stalling, and erratic shifting, similar to overheated engine behavior. Luckily I was on back roads, and a mile from home. When I got home, I discovered antifreeze under the left front of the car. When the car cooled down I checked the radiator, and it was empty. The check engine light was on solid, and the ABS light was on for a few seconds, then cleared. My code reader said, P0100 multiple misfires. The suggested cause was MAF. I removed it and cleaned it, discovering the air box had coolant in it, along with the corrugated hose leading to the MAF. I guess that's why the MAF fault. Is it possible coolant can come out of the intake, into the air filter, against the intake air flow? I fear a head gasket failed. I had a head gasket replaced 3 years ago. Any diagnosis would be appreciated.