Electrical issues please help
Cargo Master
Joined: Jan 2004
Posts: 3,118
Likes: 149
From: South Dakota
So are you now back to where the engine won't crank over? If so, pull that little slip on wire off the solenoid and run a jumper from the positive battery post to that now bare small post on the solenoid. This will tell if the starter is operational.
I hope I am understanding what the problem is now. Doing the above will bypass most things in the starting system and make sure the starting system is operaional.
I hope I am understanding what the problem is now. Doing the above will bypass most things in the starting system and make sure the starting system is operaional.
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Tuned
Joined: Apr 2018
Posts: 277
Likes: 1
So are you now back to where the engine won't crank over? If so, pull that little slip on wire off the solenoid and run a jumper from the positive battery post to that now bare small post on the solenoid. This will tell if the starter is operational.
I hope I am understanding what the problem is now. Doing the above will bypass most things in the starting system and make sure the starting system is operaional.
I hope I am understanding what the problem is now. Doing the above will bypass most things in the starting system and make sure the starting system is operaional.
Cargo Master
Joined: Jan 2004
Posts: 3,118
Likes: 149
From: South Dakota
Well you could replace the ignition switch on the steering column. Usually the rod that connects the key tumbler to the ignition switch goes bad instead of the ignition switch on 87-91 Ford trucks, it is called the actuator. But first I would check to see if you have power up to the coil through one of the small wires that hook onto the coil with the ignition switch turned on.
Are you now hearing the fuel pumps for a second each time you turn the key on?
Are you now hearing the fuel pumps for a second each time you turn the key on?
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Tuned
Joined: Apr 2018
Posts: 277
Likes: 1
Well you could replace the ignition switch on the steering column. Usually the rod that connects the key tumbler to the ignition switch goes bad instead of the ignition switch on 87-91 Ford trucks, it is called the actuator. But first I would check to see if you have power up to the coil through one of the small wires that hook onto the coil with the ignition switch turned on.
Are you now hearing the fuel pumps for a second each time you turn the key on?
Are you now hearing the fuel pumps for a second each time you turn the key on?
Cargo Master
Joined: Jan 2004
Posts: 3,118
Likes: 149
From: South Dakota
Just to be clear, the actuator is the rod that links the key tumber to the actual ignition switch. I would doubt that either the actuator rod or the igntion switch is bad if you can crank the engine over using the key.
Yes it would matter which small wire should power to it on the coil. It would be the one coming from the ignition switch, just check them both for power, I don't know myself offhand I don't have to do it very often. Don't forget to turn the ignition switch on.
Yeah there is no need to try starting it until you can hear the fuel pump for a second when you turn the ignition switch on. I would guess that is likely the problem.
Yes it would matter which small wire should power to it on the coil. It would be the one coming from the ignition switch, just check them both for power, I don't know myself offhand I don't have to do it very often. Don't forget to turn the ignition switch on.
Yeah there is no need to try starting it until you can hear the fuel pump for a second when you turn the ignition switch on. I would guess that is likely the problem.
Lead Driver
Joined: Oct 2016
Posts: 6,185
Likes: 633
From: Houston/Sugar Land
That's good to know I'll probably hold off on replacing that then. Noted thank you I didn't realize it was called and actuator. Okay I can check that tomorrow does it matter which wire? No but I'm thinking that's because I don't have any of those relays up front sitting straight up and down right now I'm going to put them back into the housing tomorrow and if the relays don't kick in I've got some new ones that I can put in thanks again for helping me get this back on the road I really appreciate it
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Tuned
Joined: Apr 2018
Posts: 277
Likes: 1
Turns out someone at my house put the old fuel pump relay back in so now I have to change it again all because they like it color coded
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Lead Driver
Joined: Oct 2016
Posts: 6,185
Likes: 633
From: Houston/Sugar Land
I hate it when that happens.
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Tuned
Joined: Apr 2018
Posts: 277
Likes: 1
So now it tries to start on starting fluid but my fuel pumps won't turn on and the pumps are only a year or two old the relay under the hood is new and as far as I know it doesn't have a fuse in the cab thank you for the help
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Tuned
Joined: Apr 2018
Posts: 277
Likes: 1
I'm not even exactly sure what a spout is but I'm assuming since it wanted to start on starting fluid I've got my spark back thanks again for the help
Lead Driver
Joined: Jan 2019
Posts: 5,066
Likes: 863
From: N.W. Alabama
heres one fuel pump check-->Part 1 -1993 Fuel Pump Circuit Tests (Ford 4.9L, 5.0L, 5.8L)
they have 3 test, on that site.
Part 1 -How to Test the Fuel Pump (Ford 4.9L, 5.0L, 5.8L)
Part 1 -How to Test the Ford Fuel Pump Relay (Green Relay)
they have 3 test, on that site.
Part 1 -How to Test the Fuel Pump (Ford 4.9L, 5.0L, 5.8L)
Part 1 -How to Test the Ford Fuel Pump Relay (Green Relay)