SS90K5

I have recently swapped a 5.3 into my k5 blazer. I had the PCM Reprogrammed to eliminate the Emissions system and to convert it to drive by cable instead of drive by wire. I replaced the O2 sensors last week with quality Bosch sensors. It seemed to be successful for a while but the trouble returned. I pinned out the wires to both sensors to ensure that they had good connection to the PCM. they are properly wired and have good reliable connection. so im stuck, confused, frustrated, angry, sad, devastated, annoyed... you got the idea.

how can i figure out whats going on? if my wiring is good, and is terminated properly one would think there would be no issue...

is there anyone in my area with a tuning setup who would be able to read whats going on with my ride here?

SS90K5

also, when i erase the code to it takes quite a few spins around the block and then a cold start to get the MIL again.

SS90K5

anybody?

gofastwclass

iTrader: (2)

It's either wiring or the incorrect sensors. There are two types of O2 sensors in use on these engines, case grounded and isolated ground. The logic of why is beyond me, but it may be part of the logic behind some engines being built in America, some in Canada and the rest in Mexico.