I have a 1990 Ford Bronco 4X4 w/ Automatic Transmission.I throwed a rod with the original 302 .So I found a 1989 351-W FI, engine out of a F250 FI.
And as of now I just found time to finish installing this 351 Between Time and work took me about 1.5 months or so.
My problem is .I'm not getting any fuel To the fuel rail.
It seems I plugged in everything.I regrounded everything as for the fire wall ,Engine and so, on.
I really don't think its a ground problem.
Here is my questions if anyone can help me:
(1).Is there a Fuel shut off Safty Switch on 1990 Ford Bronco?
yes; inertia switch;
Location pic in 87-96 Source: by Ryan M
Depiction, pre 92-96 Source: by Steve83
(2).Can someone tell me what color wire to look for .For the Fuel Pump?
http://fordfuelinjection.com/files/bronco_1991_49-2.gif by Ryan; RED to Pump
others can prolly post a 90's exact Fuel ckt diagram here .. Seabronc or Bill from a Ford cd, etc.
1st - Check da Fuel Pump Relay Socket for Corrosion
info;
When the ignition switch is ON, it turns the EEC power relay ON. (CK that relay too) The EEC power relay provides power to the powertrain control module (PCM) and the control side of the fuel pump relay. Power for the fuel pump(s) is supplied through a fuse link or high current fuse attached to the starter solenoid (battery side). From the fuse link or high current fuse, current flows through the fuel pump relay and inertia switch to the fuel pump(s). The fuel pump relay is controlled by the PCM.
When the ignition switch is turned ON, the fuel pump(s) will operate. If the ignition switch is not turned to the START position the PCM will shut the fuel pump(s) OFF after 1 second. The PCM will operate the fuel pump(s) operate the fuel pump(s) when the ignition switch is turn to START position to provide fuel while cranking.
After the engine starts, the PCM will continue to operate the fuel pump(s) unless the engine stops, drops below 120 rpm or the inertia switch is tripped.
FP relay in PWR DIST Box; have an owner's manual. will be in there.
Power Distribution Box Diagram by Rob
ck there for power.
Socket Corrosion Info; also, if you had corrosion in your relay socket, then you probably have it other places. one at a time unplug all relays and connectors on that fender and spray them down with contact cleaner. then after you let that do it's job for about 30min-1hr, go back and unplug each relay and connector again (one at a time) this time put them together with di-electric grease. you can buy a tube of it from any electrical/electronics supply or auto store. make sure you get everything plugged back in
Source: by datrimm
90-96 Overview & Diagram; "...For the 5.0L, 5.8L and 7.5L EFI engines, the in-tank mounted high pressure fuel pump is capable of supplying 105 liters (27.7 gallons) of fuel per hour at a working pressure of 270.0 kPa (39 psi). For the 4.9L EFI engine, the pump can supply 90 liters (23.7 gallons) per hour at 380 kPa (55 psi). The pump has an internal pressure relief valve to provide overpressure protection in the event the fuel flow becomes restricted. Overpressure is restricted to 850 kPa (123 psi)... The connector pinout at the bottom of this diagram DOES NOT APPLY TO '96 trucks since they're OBD-II..." Source: by Steve83[/url
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Fuel Pump & Inertia Cut-Off Switch Wiring Diagram in a 95 (see#4)
Source: by Seabronc
I'm thinking if I could find the Fuel pump main wire I can test to find if the fuel pump locked up.
(Last)Were is the Fuel Relay if equipped?
(engine compartment)
http://autorepair.about.com/library/illust...ns/bl713lib.htm
or if you have a Power Distribution Box in same area next to Air Filter?
Thanks everyone that can help!
Only thing I can think of is either Fuel pumps out or Somethings not plugged in? latter, but from wiring daigrams you can test for V at each Point, back to pump..or hot wire pump. btw, don't hot wire pump for long w/out fuel..it uses fuel to cool it offf
