Hey guys,
Ive been noticing a bit of a weird idle lately in my truck that has been getting more frequent. Ive even started to notice it at highway speeds. Its like the truck has a random hiccup/sputter. when it does happen, i can floor it to power through it and it goes away.

Before i go further, the truck is a 95 5.0 super cab 4r70w tranny and LSD 3.55 rear diff.

Truck may have an exhaust leak. I swear i can hear one when accelerating out the drivers window.

Anyway, KOEO test shows a pass but has a 172 in the memory. O2 sensor is about 1yr old and it is a bosch. The KOER test showed a 111 as well. The only strange thing that happened during the KOER test was after i shut off my innova scanner. the engine came back to a low idle but it bogged down like it was going to stall for a second, then picked back up like normal.

Any thoughts?

I changed the o2 sensor last year before i learned to start strategically changing parts instead of just changing them with a little help from you guys lol. Problem last year turned out to be a bad TPS. It had already been changed out with an autozone brand by the previous owner. Put in a motorcraft sensor, and it made one hell of a difference. Wondering if this might be a similar problem.