Help 89 5.0 Elect. Wont start
Help 89 5.0 Elect. Wont start
Cargo Master
Joined: Aug 2021
Posts: 2,252
Likes: 742
From: Maryland
Check the battery voltage with a volt meter. It should be just over 12 volts. Clean and reasonably tighten the connections at the positive and negative battery terminals. Disconnect the negative cable first and reconnect the negative cable last, if you remove the battery connections to clean them.
Where you can see the strands of wire, near their terminal ends, are they corroded? If so, they may need replacement.
Clean and tighten the connections at the fender mounted starter relay (aka solenoid). Don't over tighten those nuts, that relay will break.
Check the cable that runs from your battery negative terminal, to the front of the engine block, and/or frame.
Is it corroded?
Where you can see the strands of wire, near their terminal ends, are they corroded? If so, they may need replacement.
Clean and tighten the connections at the fender mounted starter relay (aka solenoid). Don't over tighten those nuts, that relay will break.
Check the cable that runs from your battery negative terminal, to the front of the engine block, and/or frame.
Is it corroded?
FTE Legend
Joined: Nov 2015
Posts: 30,898
Likes: 4,120
From: Angier, NC
Check the cable that runs from your battery negative terminal, to the front of the engine block, and/or frame.
Is it corroded?
Is it corroded?
You need to ground the block AND frame AND cab so a 10 ga wire from motor to fire wall.
If you did just the motor and not the frame and cab how are they grounded?
Cab sits on rubber mounts and fuel tank senders are grounded to the frame.
This is what the factory did, all 3 places.
You can never have to many grounds.
Dave ----
Cargo Master
Joined: Aug 2021
Posts: 2,252
Likes: 742
From: Maryland
it should not be " block and/or frame" but block AND frame.
You need to ground the block AND frame AND cab so a 10 ga wire from motor to fire wall.
If you did just the motor and not the frame and cab how are they grounded?
Cab sits on rubber mounts and fuel tank senders are grounded to the frame.
This is what the factory did, all 3 places.
You can never have to many grounds.
Dave ----
You need to ground the block AND frame AND cab so a 10 ga wire from motor to fire wall.
If you did just the motor and not the frame and cab how are they grounded?
Cab sits on rubber mounts and fuel tank senders are grounded to the frame.
This is what the factory did, all 3 places.
You can never have to many grounds.
Dave ----
I suspect the engine was pulled by a previous owner. There is the connection point at the frame, but rather than try to clean it and solder cable to it, I added a jumper from the firewall to the upper intake.
Do the electrons know this is wrong? Apparently not.
Would I have removed that factory frame connection myself? No.
But as long as everything is bonded together with clean connections, it works.
On the subject of those factory braided jumpers, they're probably a good thing to take a look at and maybe replace after 30 plus years. I'll probably add them to my list of things to do.
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