My 91 Olds Regency 98 runs extremely smooth until all of a sudden it will quit. If you leave it set for 30 minutes or so, it will start right up and run great again until it decides to quit again. I ran into this problem with a 92 Buick Park Ave and it was some sort of sensor on the engine (not an oxygen sensor), what is that sensor called?
Oct 3, 2008 at 9:20 AM