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Ask Chris (aka-Moose) Your Own Question
Chris (aka-Moose)
Chris (aka-Moose), Technician
Category: Car
Satisfied Customers: 1176
Experience:  16 years of experience
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put in new alternator check good when I bought it put..belt

Customer Question

put in new alternator check good when I bought it put in in still undercharging replaced belt tensor what else should I check for
Submitted: 5 years ago.
Category: Car
Expert:  superduty60 replied 5 years ago.
Hello JACUSTOMER-ir6snlhb

What is the truck charging at right now with the new alternator?
Customer: replied 5 years ago.
I have 1996 gmc truck replaced alternator still undercharing under 12 volts and replaced belt tensor what should I check next
Expert:  superduty60 replied 5 years ago.
was the alternator new(gm) or aftermarket. Or was it a junkyard part?
Customer: replied 5 years ago.
brand new from autozone sometimes voltes jumps from 11.78 to 14.5 volts intermitly
Expert:  superduty60 replied 5 years ago.
Is this is exactly the same issue it had before the alternator replacement?
Customer: replied 5 years ago.

yes

 

Expert:  superduty60 replied 5 years ago.
then you need to check the wires for damaged pins and make sure all the connections are tight at the alternator and the battery. If all that checks out you will need to check the fuses in the dash panel. Let me know what you find.