2000 Vauxhall Zafira

Engine Performance problem
2000 Vauxhall Zafira 4 cyl Two Wheel Drive Manual 140000 miles

hi ive got vauxhall zafira 2 ltr deisel with 140000 m

lately I did change turbo and complite clutch system car is going good but up hills loosing power and sometimes have to lower the gear to 2nd to built up power, which is dangerous in motor way.
no code is showing and during power loose the tempereture gage going down.

any idea please
July 12, 2009.

Have the catalytic convertor checked it may be getting plugged/blocked up !

Dave H
Jul 15, 2009.