Backfiring out of tailpipe when upshifting/downshifting

[Dickinson County Comanche]

Hi all, I just got my Rockauto order in with a new vacuum harness, and I got it all replaced. Now my low idle issue is fixed-ish. It’ll still idle low, but it won’t stumble and die. I noticed that my EGR solenoid was disconnected at the bottom, And when I plugged it in it ran like a top, only problem is it backfires, but only when warm, it doesn’t when cold. The EGR also makes a quack noise as well. I’m glad it’s running better now, but I don’t want to blow a huge hole in my muffler/cat, and also it’s a bit annoying.

 

thanks in advance.

[Leg2lok]

I had to take apart the egr transducer and clean it, it was clogged with carbon. Two halves carefully pryed apart cleaned with throttle body cleaner and a pipe cleaner. Plugs into the egr.