blackturbo
Forum Crew Member
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Hi all,
I have an 1990 ford e350 type III ambulance with the mccoy miller box. I purchased this 3 years ago at an auction to haul 4 wheelers around in and cause it was cheap and in good condition. the last two trips out in it has been 4 hours each of driving. in the middle of the first trip, i noticed the volts and Amp gauges on the main panel were reading negative and not charging. I got it home and parked it for 2 weeks.
the second trip, started it, and the amp and voltage gauges were reading good charge, about an hour into my trip, they went down to the minus again, and the low voltage light came on.. and it never came back. So tonight, I unhooked the alternators main power wire. tested the power wire with batteries on and got voltage. then started it up, and tested the plus side on the alternator and got no voltage. Is the alternator gone? I noticed a small box on the alternator with a smaller wire going to it, and a plastic screw to turn something up and down. Is this part of the alternator or some ambulance stuff. thanks for the help!
Mark
I have an 1990 ford e350 type III ambulance with the mccoy miller box. I purchased this 3 years ago at an auction to haul 4 wheelers around in and cause it was cheap and in good condition. the last two trips out in it has been 4 hours each of driving. in the middle of the first trip, i noticed the volts and Amp gauges on the main panel were reading negative and not charging. I got it home and parked it for 2 weeks.
the second trip, started it, and the amp and voltage gauges were reading good charge, about an hour into my trip, they went down to the minus again, and the low voltage light came on.. and it never came back. So tonight, I unhooked the alternators main power wire. tested the power wire with batteries on and got voltage. then started it up, and tested the plus side on the alternator and got no voltage. Is the alternator gone? I noticed a small box on the alternator with a smaller wire going to it, and a plastic screw to turn something up and down. Is this part of the alternator or some ambulance stuff. thanks for the help!
Mark