Hello, I am new to posting on the forum so please forgive any mistakes etc., I will eventually get it right
. I am the proud owner of a 2001 88 hp AJT 2.5 TDi, with about 165 k. on the clock. My query is about the possibility of the vacuum pump being faulty and hence not supplying enough suction, and this having an effect on the operation of the EGR and turbo wastegate; the reason for my question is that I have noticed a decrease in performance and general engine smoothness, exactly at the same time my brake assistance is almost gone (servo is OK, vacuum pump has been checked and provides very little suction-I am waiting for the replacement to arrive). Hoses and electrical connectors seem to be ok, so before I get into checking all that it would be great to know if there is a link there.
Thanks for the interest, and congratulations for a great forum.