Random Shudder and Stall at stops

[kars85]

'03 V8 with 126k.

I've replaced the IAC and cleaned the TB well (disassembled). I hear a light hissing noise somewhere in rear of the engine bay, but for the life of me can't figure out where the vacuum leak would be (if it is a leak at all).


That said, I've been struggling with the intermittent/random shudder and stall while coming to a stop for too long and am destined to fix it.

Any ideas? Anything missing from my order that you might consider a culprit?

 

[swetrid]

Ck the pcv hoses real well, they suck close or leak.

 

[kars85]

Ck the pcv hoses real well, they suck close or leak.

Any way to easily check them while running, or would you shut down and just visually check?

Some folks say use a rubber-safe carb cleaner and blast it all over your vacuum hoses...thoughts?