1986 electrical
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1986 electrical
Ran tests on alternator: diodes, stator, rectifier mights be issue. If i buy a rebuilt alternator it would have all of these components, right? Also, could that cause my brake lights not to work?
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From: Memphis, TN, Earth, Milky Way
Why don't you tell us the symptoms you've observed, and we'll tell you what the likely causes are, and what diagnosis to do. 
In any case: if the alternator is bad, DON'T replace it with another 1G. Upgrade it to the later 3G, which is vastly more-reliable, and more powerful. The swap is very easy, and similar to what's shown here:
(phone app link)
In any case: if the alternator is bad, DON'T replace it with another 1G. Upgrade it to the later 3G, which is vastly more-reliable, and more powerful. The swap is very easy, and similar to what's shown here:
(phone app link)
Thread Starter
Member
Joined: Jun 2018
Posts: 32
Likes: 1
Why don't you tell us the symptoms you've observed, and we'll tell you what the likely causes are, and what diagnosis to do.
In any case: if the alternator is bad, DON'T replace it with another 1G. Upgrade it to the later 3G, which is vastly more-reliable, and more powerful. The swap is very easy, and similar to what's shown here:
(phone app link)
In any case: if the alternator is bad, DON'T replace it with another 1G. Upgrade it to the later 3G, which is vastly more-reliable, and more powerful. The swap is very easy, and similar to what's shown here:
(phone app link)
awesome, thanks. is that 3G 70 amp?
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Joined: Jan 2018
Posts: 11,256
Likes: 1,770
From: Memphis, TN, Earth, Milky Way
Thread Starter
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Member
Joined: Jan 2018
Posts: 11,256
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From: Memphis, TN, Earth, Milky Way
Thread Starter
Member
Joined: Jun 2018
Posts: 32
Likes: 1
Why don't you tell us the symptoms you've observed, and we'll tell you what the likely causes are, and what diagnosis to do.
In any case: if the alternator is bad, DON'T replace it with another 1G. Upgrade it to the later 3G, which is vastly more-reliable, and more powerful. The swap is very easy, and similar to what's shown here:
(phone app link)
In any case: if the alternator is bad, DON'T replace it with another 1G. Upgrade it to the later 3G, which is vastly more-reliable, and more powerful. The swap is very easy, and similar to what's shown here:
(phone app link)
Member
Joined: Jan 2018
Posts: 11,256
Likes: 1,770
From: Memphis, TN, Earth, Milky Way
Carbs suck, and swapping one on would make the truck illegal on all public roads, regardless of local laws or inspections. It would also reduce its value.
There was no substantial change to the EFI system from '85-96, but a newer engine would almost certainly run better because of all the external improvements (wiring, exhaust, programming, sensors/actuators...). The newest "simple" swap would be an ~'02 Explorer/Mountaineer 5.0L EDIS MAF OBD-II, which is a popular swap among early Broncos. But that's probably more work than you want, so for now, I'd focus on fixing this one's problems. I expect you'll find it runs pretty well when it's running as-designed.
There was no substantial change to the EFI system from '85-96, but a newer engine would almost certainly run better because of all the external improvements (wiring, exhaust, programming, sensors/actuators...). The newest "simple" swap would be an ~'02 Explorer/Mountaineer 5.0L EDIS MAF OBD-II, which is a popular swap among early Broncos. But that's probably more work than you want, so for now, I'd focus on fixing this one's problems. I expect you'll find it runs pretty well when it's running as-designed.