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Ford Truck Enthusiasts Forums (https://www.ford-trucks.com/forums/index.php)
-   1987 - 1996 F150 & Larger F-Series Trucks (https://www.ford-trucks.com/forums/forum28/)
-   -   94 f-350 crew cab charging problems (https://www.ford-trucks.com/forums/1421038-94-f-350-crew-cab-charging-problems.html)

van o 02-15-2016 07:03 PM
94 f-350 crew cab charging problems
 
I just did a 3g alternator conversion on this truck today, and it didnt work. I have done all the research I could find and to the best of my knowledge it should have worked. I took the alternator back and had it tested, and it tested good. So seeing if anyone that has done this can tell me if I did something wrong. I have the regulator hooked as this
A- yellow wire to battery
S- to the single wire connector
I- hooked to grn/red wire on truck
Output- hooked to battery side of solinoid with 150A fuse

I did remove old alternator harness because couldn't see a reason to leave it.

Any help would be appreciated.

Lead Head 02-15-2016 08:14 PM
Does your alternator/charge light come on?

van o 02-15-2016 08:32 PM
Originally Posted by Lead Head (Post 16047151)
Does your alternator/charge light come on?
No it doesnt. Had a meter on it and was losing voltage as it was running

vtjvt 02-15-2016 08:40 PM
It sounds like everything is wired correctly, I would check all your connections and make sure you don't have a wire broken somewhere, Do you have power to the green/red wire when the vehicle is running??

van o 02-15-2016 08:54 PM
Originally Posted by vtjvt (Post 16047256)
It sounds like everything is wired correctly, I would check all your connections and make sure you don't have a wire broken somewhere, Do you have power to the green/red wire when the vehicle is running??
I will have to check that. I would say that I do because I put the old alt. back in and it is working (kind of).

vtjvt 02-15-2016 08:59 PM
If there is power there I would test the wires and make sure you have continuity through them and the fuse

van o 02-15-2016 09:08 PM
Originally Posted by vtjvt (Post 16047322)
If there is power there I would test the wires and make sure you have continuity through them and the fuse
Which fuse?

Is there any reason to leave the factory wiring?

vtjvt 02-15-2016 09:50 PM
The 150 amp fuse, I got rid of the factory wiring on my F250, and my Bronco.

Lead Head 02-15-2016 11:39 PM
If the alternator light does not come on when you turn the key on and the engine is off, either the bulb is burnt out, the alternator regulator is dead, or there is a wiring fault between the bulb and the alternator.

van o 02-16-2016 04:35 AM
OK then I will try these things out and try again when I get home from work.

bashby 02-16-2016 08:48 AM
Wouldnt a 94 have a 3g from the factory?

ArdWrknTrk 02-16-2016 10:14 AM
Originally Posted by bashby (Post 16048301)
Wouldnt a 94 have a 3g from the factory?
Not really.
I don't think the trucks switched over until '95 or 96.

I have a bricknose so I'm not sure but my charge failure light has a resistor across the bulbholder (so the truck will charge even if the bulb burns out)

van o 02-16-2016 10:40 AM
Originally Posted by bashby (Post 16048301)
Wouldnt a 94 have a 3g from the factory?
I know that mine don't a friend of mine has a 95 and his is a factory 3g

bashby 02-16-2016 10:48 AM
My 92 7.3 is factory 3g I believe.

van o 02-16-2016 11:31 AM
The 7.3 may have had a different starting year than the 460.


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