Voltage dropping on my truck

[jco1385 5,000+ posts]

make sure everything is tight, and go to get them checked. only option

 

[wylie125 10+ year member]

make sure everything is tight, and go to get them checked. only option

Will do, gonna goto AutoZ and have them do a load test on both.

 

[wylie125 10+ year member]

Battery load tested last night and came back ---Good,Low charge---. Im going to take alt off after work and have them bench test it. The battery had a float charge of 11.88 Volts.

 

[jco1385 5,000+ posts]

my money is on the alt. thats why the batt has a low charge / the alt isn't charging it.

 

[Pottro 563 10+ year member]

yea your alt is about to go. i just replaced mine in my tahoe. then my battery still went shortly after. re manufactured alternators are only like $45 a the junk yard. my battery was only hold 9 volts at idle. at 11.9 i wouldnt think you would be able to really tell. but i guess im wrong.

 

[wylie125 10+ year member]

Yea I think its going to be the alt also, its almost 10 years old.