Alt not charging and then Charging and then not again!
10-06-2017, 06:18 PM
#16
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Gary, did you mean to say "1.11 volts" or "11.1 volts" ?
Is that a single battery truck? I'm not familiar with the system on a pre-94 truck, so I don't know if you have single- or dual-battery...
What voltage are you getting off the back of the alternator? (It really should be a bit higher than 12 volts)
If you disconnect the battery completely, what voltage does it put out?
The statement of 1.11 volts is amazing me - if that's true, I think something catastrophic happened in your battery (shorted, perhaps?). How often does it blow the caps off? Under what circumstances?
I think the troubleshooting path is influenced by the actual battery voltage. 11.1 volts could be due to extremely corroded cables/connections - 1.11 might be a wrecked battery (shorted/exploded)...
We need to know more...
Is that a single battery truck? I'm not familiar with the system on a pre-94 truck, so I don't know if you have single- or dual-battery...
What voltage are you getting off the back of the alternator? (It really should be a bit higher than 12 volts)
If you disconnect the battery completely, what voltage does it put out?
The statement of 1.11 volts is amazing me - if that's true, I think something catastrophic happened in your battery (shorted, perhaps?). How often does it blow the caps off? Under what circumstances?
I think the troubleshooting path is influenced by the actual battery voltage. 11.1 volts could be due to extremely corroded cables/connections - 1.11 might be a wrecked battery (shorted/exploded)...
We need to know more...
replaced the alternator and now getting a little over 2v from the back of the alternator, but I'm having major electrical issues under the hood. I'm looking right now for the wording harness to replace everything rather than chasing miles of wires! After this I'm replacing the ecm to ensure everything is new. Any ideas to where I can find the wireing harness?
10-10-2017, 03:57 PM
#17
10-01-2018, 11:53 AM
#19
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1989dodge can make a horse farrier go broke...!Blowing batteries and finally the engi
Yup I’m broke finally after fooling with bad vehicles all year...I sleep in my dodge truck and travel for work so winter will finish me off... 1989 dodge Cummins! I can’t keep this up!
09-22-2019, 09:34 PM
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I'm having the same issue
I am having the same issue, but along with not charging my transmission is staying in first gear, but if i drive it until its dead wait until the next day and jump start it everything is back to normal.. then when I turn it off and turn it back on back to no charging and not shifting.
Changed:
CPS or ESS
Alternator
ASD relay
Changed:
CPS or ESS
Alternator
ASD relay
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