I just made a royal f-up installing a Walbro 255 in the Evo. I got the fuel pump/assembly out of the car no problem, I went to remove the old fuel pump from the assembly, and accidentally pulled the wires out of the top harness (grey) I think I can get them back in, but I don't know which wire goes to which slot on the plug (blue and black wires).

Does anyone by chance know or have a picture of the grey harness that connects to the fuel assembly? Not the top harness where the fuel lines are, not the harness that plugs into the pump itself, but the other end of the plug that goes from the pump to the assembly. FML........ Oh yea and also the small black wire that goes to the top of the fuel pump harness came out as well, gooood times......

 

So I think I figured out where the wires go. Does anyone know how to remove a wire from a wiring harness and re-attach?

Thanks,

 

So I can't get the pins to stay in, and I can't get the pins out of the other harness. Looks like I will be going to the dealership on Monday and getting part:

PNC: 83023
MR497597
HARNESS,FUEL PUMP

*Note before removing the fuel pump make sure you unclip the grey harness that goes to the black harness that is on top of the fuel pump. You may also want to remove the small black wire (before removing the pump) since this ripped off for me as well. I wish this was stated in any of the Walbro install writeups.

 

I'd also suggest getting (6) new fuel pump nuts (prior to installing) since mine were all rusted up.

PNC: 05289B
Part No: MS440501

 

Anyone know if there's any drawbacks if I accidentally broke one of the six studs holding the unit down off? Will this do any harm. It was pretty rusted and barely tightened it and it snapped off.

 

The only draw back I can think of is the possibility of a leak if the fuel sloshes around when the tank is full.

 

I think the other 5 would hold it down/seal it, it would be a pita to fix that. Take the car for a ride with the cover (held on by 4 phillips screws) and the rear seat off, and see if its leaking. Go over some speed bumps, etc.

Did you break the stud that closest to the drivers seat?

I'm convinced the fuel pump area was designed by mitsubishi's stupidest engineers, just to keep them busy while they were working on the rest of the car. If they made the open 1/2 larger it would be much easier to change out the pump.

Also you should have put never seize on the threads of the posts, would have made the nuts go on easier and easier to take off if you ever did.

 

I can help you out because im going to show some pictures tommorrow of my car being that im working on it tommorrow show us pics of what youa re looking for and I will try to match it.

 

Thanks impact. I ended up just buying a new harness at the dealership. Part number is posted above.