I have a 2008 chevrolet impala. I started having the engine power is reduced and starting disabled services throttle a year ago. I replaced my Gas pedal twice( the 2nd time only 5 months ago. And it started again last week. I replaced the throttle body this morning an it ran good for about 3 hrs then started with the engine power reduced again then started shutting down completely again. While on my way home from work tonight it shutdown SIX times with in 5 mins of each event. I ordered another NEW gas pedal today but I think this is just going to patch the problem since I can't take it to a shop.

 

have your vehicle scanned with a diagnostic tool

 

That's not free, and i can't afford to.
That's why I said "I can't take it to a shop."

 

It is free. Take to Advance Auto, O'Reily, Autozone .... any of those kind of places.
Even if it wasn't. It would still be worth it to save you days of searching aimlessly and replacing random parts. There are a hundred different causes for this problem.

That throttle body probably cost you more than a 1hr of a mechanic's time. (and I hope it was an OEM part by the way)