My wife has a 2007 Ford focus SE 2.0 l with automatic transmission and I was wrong about the miles. We're actually only at 158 674. Nevertheless my question was I have determined that the throttle is mechanical and not electrical but the reason it wouldn't down the RPM to a lower RPM for her was because the throttle got stuck in more of the open position. I went over to where we had taken it to be examined and I wiggled on that throttle and got loose so it moves freely again and the spring pulls it back. However I'm concerned this is going to happen again when she's trying to drive to work. Should I just go ahead and replace that throttle body system since it's only a few bolts at the intake or is it possible to just spray some lube in there and make sure it doesn't ever get stuck again? Should I clean The plate in spray some oil on the spring lever and maybe it'll be okay? Or is this thing just dasvidania need to take the old throttle body out and put a new one in?
If your throttle is sticking, you should probably clean it (and the MAF sensor too). Crud from the fuel over the years build up deposits that can lead to poor performance. Scotty shows how:
https://www.youtube.com/watch?v=NWCKvU2FmDc
Okay I cleaned the mass air flow sensor and the idle air control valve. There's a new throttle body installed. Wife says it runs great now. We just need to look at brake hoses