Going nowhere below 2000rpm
 

Hello,
Just bought my 85 300D Turbo. It has 148k miles on it. The engine is running perfectly once I get the car moving but from a full stop the car is ridiculously sluggish until i get it into 2nd gear and the turbo can kick in. It doesn't even make a difference if I floor it, it takes 15-45 seconds. I've heard talk about Italian Tune ups, ALDA adjustment, even putting auto transmition fluid in my gas tank!. Are these the most likely remedies or could there be something else needed.