I thought I would start a new thread because the previous title no longer aligns with my issue.

I have a 1995 Blazer with the W engine. I've been struggling with a rough idle, poor acceleration, SES light on, and a clicking/ticking sound coming from the area around the distributor. Unfortunately, I cannot get my car to scan. I've tried multiple readers and they all fail to link. There is power at the connector.

As discussed in my previous thread, I replaced the distributor and initially, the problems resolved. The engine idled great and the acceleration was good again as well. The clicking sound was also gone.

This evening, after +/- 6 key cycles, the SES light is back on and the clicking sound is back. The clicking, or ticking, sounds like it is coming from, or around the distributor. The sound comes and goes in bursts, but when the sound is occurring, the idle gets quite rough. Any suggestions on what I should check? It’s fascinating that the sound was gone initially after replacing the distributor, but is now back. It lends me to believe that something I touched during the distributor replacement must have an intermittent issue, but what?

Thanks, Brian