Altenator And Low Voltage

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Jul 24, 2006 | 08:07 PM

#16

Kevin Blown 95 TA

Registered User

Joined: Oct 2001

Posts: 2,684

Re: Altenator And Low Voltage

Quote:

Originally Posted by matLT1

I get the same thing with my car. On a hot day when the fans are running a lot the voltmeter will read just below the middle line and as I cruise more the meter will slowly rise. IMO it is a heat issue with the alternator and its wiring (as temperature increases so does resistance).

If you are getting overheated cables from high resistance, larger cables or new cables helps. Check those voltage drops like I said. Ohm's Law and Kirchoff's Voltage Law never fails. If the alternator is putting out the correct amount, it is getting lost somewhere.

Last edited by Kevin Blown 95 TA; Jul 24, 2006 at 08:10 PM.

Jul 24, 2006 | 08:16 PM

#17

Robs97Z28

Registered User

Joined: Jan 2004

Posts: 909

From: Martinez,CA

Re: Altenator And Low Voltage

Quote:

Originally Posted by hey01

this is prob a dead thread anyway :-P

but 9

i've got the 45% reduction pulley with no overdrive and it only goes down to 12.8 at idle.

it jumpes up pretty quick when it gets around 1000 though, i've never had a charging problem or anything.

but like i said before once its been running for 10 mins or so my alt doesn't feed the battery more then 13.1

get rid of the reduction pulley.. the voltage will go up during idle.

Jul 24, 2006 | 10:36 PM

#18

skibbez93z

Registered User

Joined: Feb 2005

Posts: 268

From: Newton Kansas

Re: Altenator And Low Voltage

mine does the exact same freaking thing!!!! i also have the underdrive pulley... maybe thats it? i have no idea. but it bugs me so much. i just put a new alternater in last week and it is still doing it.