The 97 ME 2.1 has a throttle cable that runs to the potentiometer near the brake master cylinder.

The 96 version has the throttle cable running to the engine.

What type do you have?

If the 96 version, there is a slip clutch and motor that takes care of throttle operation and I'd suspect that something is wrong there. You are probably driving on the mechanical limp mode. I have not repaired any of these.

The 97 ME 2.1 has no direct connection and is completely servo motor driven.