Engine Performance problem
1992 Lexus LS 400 V8 Front Wheel Drive Automatic 185000 miles
I have been the second owner of this fine automobile since purchasing it in May '08. I haven't had any problems at all since buying it. It has ran great until I filled up with gas yesterday. While on the way home it started chugging at 40 mph. I dropped the hammer on the gas pedal and it ran as if it were shot from a cannon. Once I leveled off at 40 mph again it began to chug again. Only around 40 mph did it chug.