USMCord1

I had a wire that was plugged into the fuse panel with no fuse on it. It touched metal and sparked, now the truck turns over but not start and no fuel pump sound. I checked all fuses and relays inside and under hood in the relay box, all are good. Any ideas?

1993 F150 4X4 4.9L

Just call me Sean

iTrader: (1)

Check the fusible links, they are bolted to the solenoid.

FOMOCO466

check to see if you zaped something in the ECM. it's behind the driver kickpanel area, and a square plug under the hood is the connection. open it up and see if there is anything burnt in there. It'll be a lil black spot, unless one of the lil diaodes blew. Got a friend with the same type truck, or go to the salvage yard get a ecm and try it. if it works then you got the fix.

USMCord1

Thanks for the advice guys, I will check them out and let you know what I find. Thanks again.

Nater123

I had the same problem with my 92 5.0. I sat there and could not figure it out and no matter what there was no fuel flow or fuel pump engaging. So i looked around the web and my Chilton. It was the fuel shut off switch some how got tweaked, how I have no idea! But I took the passenger side panel off under the glove box there was a red button I pressed it back down and all was well she fired rate up. Hope it helped some or gave you something to try.

USMCord1

I tool the connector off of the ECU (Silver box under hood) and all wires looked good, no burn marks or spots.

Check all fuses (OHM meter) all good

Switched relays all are clicking when key is turned on

Checked fuel shut off switch, was down pushed it anyway, still nada on fuel pump.

Anybody know of the three, red/yellow, green/yellow and gray/orange that go to the fuel shut off switch. which one goes to the fuel pump? Thanks for all the help guys, so far this has been the most helpful forum for my problem.

david58

You didn't think I'd find you did you.
Anyone have a wiring diagram it would help a whole bunch.

Good old Bill

Sure do, try this:

Go to: search.ebscohost.com
USER: greatfalls
PASS: publiclibrary

Select auto repair, year, make ect.

david58

I don't see anywhere to sign in?

Just call me Sean

iTrader: (1)

The dark green wire with the yellow stripe is in from the fuel pump relay, and the red wire with the yellow stripe is out to the tank selecter switch. I don't show a grey wire with an orange stripe in my diagrams.