Saab: Saab Losing Power in Higher Gears, 2005 saab 93, spark c

Question
I have 2005 Saab 93 TDI - when i hit the higher gears the car loses power and struggles, especially going up inclines

Answer
Tim:
  The most likely reason(s) for your problem are:

    a. Partially blocked fuel filter

    b. Weak or mis-timed spark  

    c. Worn out fuel injectors

    d. Partially block exhaust system (cat converter)***


         ***  This is very CRITICAL..it could lead to an overheated  converter and car fire!   Check this out ASAP!!!!!!!!!!!!