454 smog pump delete

[Chevy3+3]

Originally Posted by Nodnarb76

When I removed mine I just left it unplugged, had no problems.

Sweet! DO you know what that thing is that the wire was connected to? Only reason I ask is because if it doesn't change anything when its unplugged then it probably didn't do anything to start with. just seems wierd

[Nodnarb76]

Originally Posted by Chevy3+3

Sweet! DO you know what that thing is that the wire was connected to? Only reason I ask is because if it doesn't change anything when its unplugged then it probably didn't do anything to start with. just seems wierd

Looks like it got a signal from the PCM to open/close. I recently removed the whole TBI harness and traced the plug back to the PCM. I had no check engine lights when I left it unplugged. Looks like it
just tells it to open or close, and does not get any info back to the pcm.