had someone said he needed fuel pump installed, was having hesitation issues, sputtering etc, claimed he knew the problem and just couldnt do work( hes a REALLY large man). installed pump, replaced fuel filter and its hoses... he drove it 35 miles with no problem, and it started acting up again. had a friend with a '98 voyager who had very similar issues, fixed same parts, ended up needing a computer for the d@mn thing. guy would like me to continue working on vehicle (yes hes paying me) yet i am at a bit of a loss. no check engine light, vehicle would NOT offer any issues during the 1.5 hrs we used it going to u-pull-it to find a good pump, so i have no idea exactly how its behaving. any suggestions here??