My accelerator has been getting stuck recently about an inch or two forward from normal, and subsequently have a fast idle when I put it into neutral or park. It easily returns to normal if I pull it back though. Is this typically just the throttle linkage needing lubing? I believe I also saw some kind of joint right behind the pedal, where the linkage attaches to it. Could that spot possibly need some lube? Is any grease good or do I need something like lithium? The linkage under the hood was last greased about two years ago by my old mechanic where I used to live (did it voluntarily).

I remember reading a story somewhere online where a guy was driving his Benz really fast on the highway and the accelerator got stuck, so his wife had to grab the wheel and drive the car as he went under the steering wheel to tug on the pedal. Luckily he got it dislodged. I hope that's not in my imminent future. . . .

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1980 300D
1977 450SEL