PCM damage caused from Cat Burglar

bnpartee_182080
Fri, 26 Aug 2022 02:48:56 +0000
Maintenance/Repairs

A Cat Burglar tried to cut off my cats in a church parking lot. They cut the y-pipe in 3 places, and one cut right through the front O2 sensor by the upstream cat. Mechanic ended up replacing the O2 sensor and rewelded the pipe but it only ran correctly for about 10 minutes. It began to idle extremely rough and slow. Mechanic said he reset the PCM after replacing the O2 sensor like you are supposed to, but there is definitely an issue. It was spitting codes out that said 2 cats were bad so they replaced them. They also went ahead and installed all new O2 sensors since insurance was covering all but the deductible. It ran fine for 5 minutes and then the rough idle started again. The codes then showed all bad spark plugs on 2,4,6,and 8 which is on the side the cutting took place. Replaced the spark plugs and it ran fine for 5 minutes. The codes then said one of the new O2 sensors was bad so he replaced it again. Ran good for 5 minutes then the issue happened again. No wiring issues seen, and the mechanic now thinks the computer was damaged during the attempted Cat burglary. Could the computer have been damaged when the saw cut through the front O2 sensor? Could some sort of electric charge back up through the computer and fry it? I’m at a loss and so is this very good mechanic.

10 posts - 8 participants