Voltage Pulsing
#1
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Voltage Pulsing
So I've got the Fummins going and finally drove it at night and I notice the lifts "pulsing". I wired the factory dodge alternator with a mopar voltage regulator I got a the picknpull junk yard. So I wired it up with a ground from the mounting bolt to the alternator. First thought was need an extra ground, so I ran a wire from the same regulator mounting screw to the ground on one battery.
Any thoughts? Only thing I can think of is to get one of the "mopar heavy duty blue" regulators.
Oh check the voltage with a DVM and it drops to 14.4 then up to 14.8, also no AC voltage from pos to neg battery posts.
thanks!
Any thoughts? Only thing I can think of is to get one of the "mopar heavy duty blue" regulators.
Oh check the voltage with a DVM and it drops to 14.4 then up to 14.8, also no AC voltage from pos to neg battery posts.
thanks!
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The 89 ford didn't have an external regulator that I saw, the alternator I believe was controlled via the computer. However I did have what I think is a ford regulator from my donor truck (was a ford also). If I can find where I pitched it and find a wiring diagram for it I may give it a try.
thanks!
thanks!
#4
My Chevy conversion did the same thing. The voltmeter fluctuated from low 14's to low 15's and the lights pulsated. I did all the grounding stuff you describe also. Turned out the voltage was unstable on the wire I used coming out of the cab from the ignition switch to the voltage regulator. I ran a temporary wire straight from the battery positive to the field wire needing the signal. The lights quit flashing and the voltmeter stabilized. Then I corrected the problem by tying into the ignition wire I used for the injection pump. Strange military truck wiring.
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