I have a 2002 ford excurison with the 7.3L diesel. the engine light has been on for a while now and i know that it was a reduced power boost error. i was towing on saturday by necessity and had been driving for about an hour when suddenly my excursion started to slow down. i was losing power and unable to speed up to mainatain my speed. if i gave it too much fuel i started hearing a ticking nosie coming from where the turbo is located. long story short, the reduced power came and went seemingly unrelated to anythign i could figure out (other than hill angle, speed, pressure on fuel, etc). when i got home and turned it off, i got out and looked at the ngine and underneath. nothing exciting or obvious. i keyed it up to Acc, and this horible screaching came from the fuel pump and near the fuel filter. it took a few cycels of Acc on/off to narrow it down. after a bit the fuel filter screech went away, but the fuel pump sounded horrible still. kinda sounded kinda like the fuel pump was running dry. i swapped out the fuel pump with a new one and it's better, but still having trouble pushing it uphills hard. and still mkaes the noise, but not as bad. i can cruise at 65 on flat, but faster or up grades and it will lag. ideas about what's up? i'm guessing clogged fuel filter intake, but dont wanna do the work withough due diligence in makign sure its not somthing else. FYI, i have been running biodiesel for the last 5 years, occasional commercial as needed. i know the fuel filter is good as i changed it recently.
anybody provide a solid link to how to clean the fuel intake screen? i havent done this before and dont want surprises.
also, anything else i shoudl do while i am in there? is it worth doing the hutch or harpoon on the 2002 excursion? anyone else can give me actualy results on the smae year/model?
i tried looking for the link to the IPT kit but couldnt find it. anyone got a direct link?
thanks
doug

 

I hope someone else chimes in , but , I just pulled a tank today because of plugged pickup screens .It was a 550 ,but yours may have them . That is a common issue . With your pump screaming and low power , I would suspect the tank screens . I am not versed on the Exc. , but think it is similar to the F series .

 

how do i do it?

 

I am not much help ,but ... I would pull the tank , clean and mod the pick up . But ... I am not sure what the Ex. has . I Hope someone with more info on yours chimes in . More posts seem to get more attention . So hope I am helping .

 

Moved to the 7.3L PSD forum.

Stewart

 

If u want to verify fuel psi is the cause, plumb a gauge in at the fuel bowl that has a long enough lead to see it in the cab and take it for a drive. When it acts up, look at fuel psi to confirm,

 

I remember somebody doing a Hutch mod on an Excursion and his fuel pickup design was far different than on a truck. He had a lift pump in there... so you may need to look for the lift pump fuse.

I'd drop the tank and investigate what's going on... but that's me.

 

before i pull the tank, i just want to make sure that my issue isnt lack of power to the intank fuel lift pump. how can i verify that? isnt there a fuse soemwhere that i also need to check to make sure that it is actually tryign to lift? i'd hate to pull the tank to find out it was a simple fuse or relay i overlooked.