Fuel Pump Relay

[Jonas148]

 

 

I am unclear on what your issue is. When it won't start is it becuase it doesn't crank?

Will it always start if you jump the fender mounted starter relay?

When it won't crank did you ever try holdint the shift lever higher into park? IF so did that work?

The last time she started, was when I jumped the starter relay. I will start from the beginning. As it sits right now:

I can turn the key all the way to start, the engine turns over but will not start. I tried pulling up on the shift lever, still nothing. So I tried to jump it from the starter relay again just to move it out of the standing water, now it still will not start. The reason I think it is a fuel problem is because I can turn it over as long as the key in in start usually no more than about 10-15 seconds. I cannot smell gas, not even a little.

From what I have read please correct me if I am wrong, I can ground the fuel pump relay terminal on the self test connector, and I should be able to read 12v at the Pink and black wire at the pump correct?

Presuming the ground is good, as the fuel gauge sender and pump are grounded together correct? ( my fuel gauge works)

If not, I should be able to get it back at the inertia switch, or the inline fuel pump. If that doesn't work out I should be able to get 12v at the brown wire on the fuel pump relay.

If ALL of those fail I have one yellow wire left on the fuel pump relay.

If I don't have 12v there it is going to be a a bad fused link "M".

Sound about right?

And thanks for working with me on this thing. I hope to get it repaired soon.

 

[BroncoJoe19]

IF you jumper the self test connector, you should get 12 volts at the pump. YEs. I'm not looking at a diagram, but pink does ring a bell. It seems that you have done your homework, and now you just need to get to it.

How to check a fuel pump relay

http://broncozone.com/forums/index.php?showtopic=14905

 

[miesk5]

yo!

As Joe wrote... safari, so good...in so many words

ok, here is a diagram I pulled outta my site; in order to review your Qs... verify it later w/the EVTM diagram(s)

From what I have read please correct me if I am wrong, I can ground the fuel pump relay terminal on the self test connector, and I should be able to read 12v at the Pink and black wire at the pump correct? YES

Presuming the ground is good, as the fuel gauge sender and pump are grounded together correct? ( my fuel gauge works) PROBABLY, since I see a Splice (S903) in da BLACK GROUND WIRE #57 - in Right side of da diagram.

If not, I should be able to get it back at the inertia switch, or the inline fuel pump. If that doesn't work out I should be able to get 12v at the brown wire on the fuel pump relay.

If ALL of those fail I have one yellow wire left on the fuel pump relay. ok, I see, YES YELLOW on FUSE LINK SIDE OF THE RELAY SHOULD be 12V

If I don't have 12v there it is going to be a a bad fused link "M". YES

Wiring Diagram in an 86 5.0

Source: by Ryan M (FireGuy50) at http://fordfuelinjection.com/files/bronco_1986_103.gif

 

[Jonas148]

I will post what I find out there tomorrow... I managed to get it into the garage tonight, so rain or shine, I can finally do something.

 

[Jonas148]

Thank you to all of you guys.... I got it done. The bad thing is I don't know at what point I got it done. I was cleaning and checking grounds, pushing connectors together, and I reseated every fuse in the block.... I turned the key to check for some voltages.... nothing. crawling around under it.... pushed on some wires and connectors, the pump kicked in.... since I was under there I heard it!

Let me tell you I couldn't get out from under there fast enough..... first try, she fired up... all my girls came out into the garage, eyes wide, and screaming! Anyhow, thanks again, and off to the carwash... I took more red paint off today than you could imagine. If you never have used Maguiar's Flagship Boat wax.... its pricey, but damn good. I couldn't resist. come and see here....BroncoPics