first of all does the 97 1.9 td have a limp home mode fitted?
because after filling up with fuel about 5 to 10 minutes down the road thats what the car seems to do..have a lack of power..
if you stop the car and leave it it works ok again but it seems the longer you leave it the better it is and certainly the next day it works fine. until you fill it up again days and weeks later.
ive changed the fuel filter and put some injector cleaner in which are good but not solving what it is.
it does seem to go like a switch being flicked you can still drive it but with very limited power..
any ideas and all suggestions greatfully recieved