The 94 Buick lesabre would hesitate while driving then died and I replaced the mass air flow sensor and oxygen sensor and the car only runs with the mass air sensor unplugged but runs rough the oxygen sensor said low voltage so I replaced it and Im not sure if the catylitic convertor is plugged but exhaust still comes out but its very hot and it stinks as soon as I plug the mass air flow sensor back in the car dies
Cars & Trucks - Buick - LeSabre - 1994 Buick LeSabre
Answers & Comments
Well it sounds like a plugged converter. i use an infer red temp sensor thaT i can monitor the temp before and after the cat to see if it is working. you can also take the upstream o2 sensor out and run it that way to see if you gain the integrity of the motor back. this will let the exhaust escape before the cat and if it does your cats plugged. let me know how you make out.