View Single Post
Old 04-09-2019, 07:40 PM   #9
weq92f
Registered User
 
Join Date: Oct 2016
Location: Dallas Texas
Posts: 2,887
Re: too many amps, need better alt?

Today I'm doing some testing in 85* outdoor temps. With everything on ( cooling fans on high, AC blowing on high, lights, radio wipers,...), I'm reading 12.5 volts at the battery, 13.5 volts at the alternator post and the gauge is reading around 12, likely closer to the battery reading but lower. This is at idle in neutral ( auto trans ) at about 675 RPM. In gear, the RPM doesn't drop very much.

Minus the lights and wipers, this is pretty much the norm for summertime driving in terms of the state of the charging system during stop and go summertime driving. At speed, the fans will kick off.

What do you guys think, is my alt keeping up well enough here at full load? BTW, most of the big draw items are wired directly to the alt post.

-klb
__________________
67 C10 fleet fuel injected '70 402, 700r4, 3.73 posi
07 335 sport turbo 6sp
94 Trans Am GT LT1 6sp posi -- sold after 22yrs
99 540 sport V8 6sp -- sold
73 240z L24 4sp -- given to friend
68 C10 step 350/350 3.73 open -- sold
weq92f is offline   Reply With Quote