A few days ago, my 95 E320's throttle started acting very peculiar. If you even breathed on the gas pedal, it would take off and spin the tires. after lubing up the linkages, the problem persisted. I looked in there today, and noticed there is one return spring. Should there be another spring? Does anyone have a pic or a diagram? This is really annoying. I would say at about 1/5 throttle, it feels like its floored. The car has ASR, if that makes a difference. It idles and drives fine otherwise, no check engine light. The throttle is just not progressive at all anymore. The cable is adjusted properly. Please help.

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93 300D 2.5 Turbo, Black/Palomino 273K
09 E350 Black/Black 41K