Have almost 125K on my TL-S.
Everything was running well until recently.

Had the idle stall issue, mechanic cleaned the EGR valve and the visible build-up in the ports, it's a bit better but I still stalled out once and I feel the RPM's drop once in awhile. Should the entire port be sprayed out?
Just had the PS pressure hose changed this Sat., thought it would be a couple hrs max, but ended up spending almost the whole there at the shop....
This morning driving to work I get the P2138 Throttle error and the VSA83 error.
I was able to drive on the highway, till I got to a local street, from idle it would not accelerate normally, felt like was stuck in 4th gear.
Restarted the car, the VSA error went off (check engine still on), car accelerates normally.
Do you think the APP is bad or can I just tighten the wire (anyone have a link?)

Thanks.

 

Yea it sounds like your accelerator pedal position sensor is bad and need to replace it

 

best what to know for sure is to get readings on it... if it fluctuates too much then it is time for a new one. For all practical purposes it is just a giant variable resistor and they do go bad every once in a while