Fuel Issue

[Jrama]

The Problem?

Tj blows the fuel pump fuse when it gets on really steep inclines or hills (nose to the sky type of inclines). It will not blow the fuse if its on a hill, or if there is a lot of jarring around or if I am at 4500 rpm WOT or any combination of these factors....only on very steep inclines smooth or rough.

I realize most likely the issue is probably a bad pump but I want to be sure before dropping the cash and effort into replacing it. I have little experience with electrical and I do realize it could be a short but that seems very unlikely given the nature of the issue.

So to get an idea of what's happening I took an amperage measurement at the fuse at idle to which I got a reading of 0.14-0.17. Multimeter was on the 10A setting and set up accordingly. Anyone know what the correct reading should be or any other things I can check before going and replacing the pump? I am a total Newb to electrical anything so let me know your thoughts....

Already tried playing around with the Relay's to no avail on the trail Sat

[Drambuie89]

That reminds me, I need to replace the Horn fuse I gave to you on the trail :p

[Jrama]

Haha.....yeah, I have a 15A stuck in there right now, blew your 20 and ended up using a 30A to get off the hill.   

[Greg-100]

Consider that you have a bare positive wire in the fuel pump circuit that hits a ground when you are nose to the sky, i.e. that the positive wire to the pump needs gravity to make it fall back on a ground and blows the fuse?

Also check to see what other circuits that the fuse protects as it could be something else other than the fuel pump wire blowing the fuse?

A circuit breaker in place of the fuse will help some what till you find the root cause.

Greg

[BrokenAxle]

Consider that you have a bare positive wire in the fuel pump circuit that hits a ground when you are nose to the sky, i.e. that the positive wire to the pump needs gravity to make it fall back on a ground and blows the fuse?

Also check to see what other circuits that the fuse protects as it could be something else other than the fuel pump wire blowing the fuse?

A circuit breaker in place of the fuse will help some what till you find the root cause.

Greg

This is exactly what I was thinking...