I have a 1993 300D 2.5 mercedes that has no power under pressure. Going up grades or when I need to step down on it. Have put new vacuum pump on and it does the same. Starts great and sometimes runs great when it is cold but when it warms up it looses power again. Do you have any ideas. A lot of this year and model have this problem but have never seen any answers.
Wednesday, March 16th, 2011 AT 3:06 PM