Join Date: Apr 2009
Location: Santa Fe, NM
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OK - I get it. Sounds like the engine itself is bouncing around from running rough, causing the sounds.
Sensor problem seems the likely culprit, and I would suggest the CPS sensor first. Although they used to be expensive, prices have fallen, and I think I paid less than $20 last time.
They're easy to replace - 5 minutes or less.
Another good idea for you would of course be a code-reader. That would take the guess-work out of it, and they can be picked up at any auto-part store.
Super-Chips programmers also has a built in code-reader - that's another option, but all in all they're really useful to have for an engine with as many sensors as the Powerstroke.
There's always the possibility that you have more than one thing going on at the same time, and for that, the code-reader is a life-saver.
I run a SuperChips programmer on my Powerstroke, and I'm really happy with the power-gain, as well as the slight reduction in fuel consumption.
That the programmer also reads codes - and deletes them, if you want to, easily has had my unit pay for itself in a matter of a couple years, maybe less.