89-f-250 460 engine no power -electric

You need an electrician. He will probably need a wiring diagram to figure out what circuit has the malfunction. Have you checked to make sure the fuel pump fuse has not blown?
By jumping the solenoid, do you mean you bypassed it? I don't even know what solenoid you are referring to.
The pump circuit, if like other GM vehicles of those years, probably has a fuel pump relay (under the hood) and a fuel pump fuse- probably a 15 amp blue fuse, could be under the hood or under the dash. If you check all fuses, then find the pump relay, now you can check there for power available to the relay. The pcm is what signals this relay on. Does your pcm have power? Does your check engine light come on when you turn the key to ON?

Anti-theft system light on ? Security light ? What reset switch ? What make model an year vehicle ! All vehicles from 1996 on, the PCM/ECM - engine computer controls the fuel pump relay . If there isn't a crankshaft position sensor input to the PCM / ECM ,the PCM / ECM will not energize the fuel pump relay ! There are a few good videos on youtube on fuel pump electrical circuit testing . You need to test the circuit before replacing parts . Parts stores love guy's like you , your helping to make them rich !

Is the battery fully charged? You may have a power supply issue to the ignition switch or possible ignition switch issue. If battery ok... try jiggling ignition switch slightly to see if dash light come on. Are the dash lights the only lights not working or is all electrical out? Was the vehicle given a boost by any chance?

does the engine turn over but not fire? it may not be fuel to check remove one of the spark plugs and while you turn engine over get someone to look out for signs of fuel emmitting from open cylinder if there is a smell/puff of fuel check that you've got a sperk at plugs as a starting point if not get the OBD read

No noise from fuel pump when you turn over the car .First thing get voltage at fuel pump relay checked, is there 12 volt to the relay.If no, then problem is again the relay.--------- To reconfirm the problem, try other test, that is remove the relay and by pass the relay terminals with a jumper wire .Then with 12 volt external battery give power to fuel pump connector and see, if the fuel pump starts, then its clear that fuel pump relay is faulty.----------- Also other problem can be fuel pump inertia switch.If the inertia switch is faulty then also fuel pump will not start.-------- The fuel pump relay on a 1995 Ford Explorer is in the power distribution
box, in the engine compartment, driver's side near the firewall.----------
The fuel pump inertia switch is in the right front passenger area
it is below the dash but above the carpet in the right hand corner.--------
Its a push button type inertia switch.
--------
Fuel Pump Activation
When ignition switch is turned to START position, PCM operates fuel pump relay to provide fuel for starting engine. PCM senses engine speed and shuts off fuel pump by opening ground circuit to fuel pump relay when engine stops or engine speed drops to less than 120 RPM. When ignition switch is in ON position, EEC power relay is energized (contacts closed). Power is provided to fuel pump relay and timer in PCM. Fuel pump receives power through fuel pump relay contacts.
Inertia Fuel Shutoff (IFS) Switch
All models use an electrical interrupt switch in fuel system. During a collision or vehicle rollover, electrical contacts within inertia switch open, shutting off fuel supply to electric fuel pump. Fuel supply is interrupted even when engine is running.
A reset button is located on switch assembly. If electrical circuit trips, vehicle will not restart until switch is reset. Fuel system should be inspected before resetting switch.
IFS switch is located under instrument panel, near right side of transmission hump. ----------- If the fuel pump relay, the inertia switch and fuel pump all checked ok, and fuel pump is working with direct 12 volt source to fuel pump.Then problem relates to computer.The computer (power control module, PCM) is faulty and has to be replaced.--------- This will help.Thanks.Helpmech.

Code 542 is the only one you need to worry about, and you've got the wrong definition for it (or at least you need some term correction). Code 542 simply means there is a fuel pump circuit failure, i.e. there's no voltage seen by the PCM going to the fuel pump. This could be as simple as a bad relay or fuse.

From service literature.... DTC 542 indicates that one of the following has occurred:

No Start:
-- Inertia Fuel Shutoff (IFS) switch not reset or electrically open.
-- Open circuit between the fuel pump and FPM circuit connection to the power-to-pump circuit.
-- Poor fuel pump ground.
-- Fuel pump electrically open.

Engine Starts:
-- Fuel pump secondary circuit short to power.
-- Fuel pump relay contacts always closed.
-- Open in FPM circuit between PCM and connection to the power-to-pump circuit.
-- Left/front HO2S short to power (dual HO2S applications).
-- Damaged Powertrain Control Module (PCM).

l Does the engine start? (For trucks with dual fuel tanks, verify tank selector is in the same position it was when KOEO DTC 542 was received.)

Yes
GO to «J11».

No
GO to «J15».

Check woth ypur dealer about this TSB. Hope this helps.

most likely its your ignition switch!! it will cause stalling, no electrical current to dash, no current to fuel pump. have a good day !! check all electrical wires first.

are you geting power to the fuel pump?? On some vehicles the electric fuel pump primes when the ignition is switched on to acc (i.e when all the dash lights come on etc) and on other vehicles the fuel pump doesnt start untill you turn the ignition over to the "start" position. Id check the fuel pump was acutally getting power and go from there

The fuel pump relay is activated by the ECM, Check the fuel pump fuse and both ECM fuse on the fuse panel on the side of the dash. The ignition energizes the ECM which energizes the Fuel Pump relay which powers the fuel pump. Check the power for the fuel pump at the frame rails by the fuel tank. It's common for that area to get corroded and the wires break easy when the fuel pump has been replaced. That short section of wire harness is only $12.00 if need to be changed. If you have a few friends, you can remove the box from the frame since it's only being held by 6 blots so you don't have to drop the gas tank. The other thing you can try to do is to run a hot wire to the pump wire harness after you disconnect it so you don't loop the electrical and see if the pump works. Good luck and keep me posted.

for your mazda problem you must to check the followings
1- chech fuel filter
2- check electric fuel pump
3- put switch on you must to hear a click if no so there no electric power on pump in this way take out electric fuel pump and tested if not work so you must to change it by new one and also you must to change the fuel filter by new one.
this is the best way for start your car and let me know if every thing ok