Throttle Return Spring?
 

I have a '92 190E 2.3 with an accelerator issue. A few days ago I felt a slight pop when accelerating and now get little-to-no resistance when I hit the gas pedal. And, the RPMs generally stay high when I release it. I can kick it down when in park and get the idle to a normal level but, while in gear, it's a little hard to control.

After seeing a photo on another site, it appears that there should be a spring where the red line is in the attached picture. Correct? Is that the throttle return spring?

If that's what it's called, I can't find it on parts sites. Could it be called something else? Or, is it generic enough to be able to get at someplace like Advance Auto?

Any help is appreciated.

Yes, you are correct. Here is a photo I have that shows the spring, I don't have a close up.