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 extr…

I do not believe that the PCM could have been damaged during the theft of the catalytic converters, even if the O2 sensor harnesses were damaged, because that circuit would not be powered when the engine isn’t running. It is much more probable that there is damaged wiring (which the mechanic failed…

Did they disconnect the battery or connect one of these to the battery before welding on the vehicle? Antizap Clamp-on Surge Protector 12/24 Volt | Goodall Manufacturing | 32-030 Goodall 32-030 Antizap Clamp-on Surge Protector 12/24 Volt If not, there’s no…

So the two mechanics that worked on my truck chased everything trying to figure out the issue. What solved the problem, so far, was removing the all new aftermarket O2 sensors and installing all new GM O2 sensors. It’s really weird, but all I know is that after 5 days I’m finally back in my 2016 S…

Did insurance cover the fees? Less deductible of course.

Yeah, but I’m still out $650!!

[image] bnpartee_182080: What solved the problem, so far, was removing the all new aftermarket O2 sensors and installing all new GM O2 sensors. It’s really weird It seems that the replacement oxygen sensor had somewhat of a signal circuit short to voltage, this can occur with power from the h…

I had this happen once. I replaced a lazy O2 sensor with the cheapest one at the parts store. It ran WORSE and got worse mileage than before. I spent more money on the one specified by the manufacturer and it was fine. If Bosch is OEM, replace with Bosch. If Denso is OEM, use Denso. I bet a wo…

Good ideas above. If none of those, my guess is wiring to one or more of the o2 sensors damaged during cat-attack.

PCM damage caused from Cat Burglar

Maintenance/Repairs

Tester August 26, 2022, 1:38pm 4

Did they disconnect the battery or connect one of these to the battery before welding on the vehicle?

If not, there’s no telling what happened to the electronics in the vehicle.

Tester

2 Likes

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PCM damage caused from Cat Burglar

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