View Single Post
Leland Pate Leland Pate is offline
Senior Member
 
Leland Pate's Avatar
 
Join Date: Jan 2000
Location: Reno, NV
Posts: 3,694
Current draw problem

My car has developed a problem with battery voltage in the past few weeks. I started noticing it was cranking slower and slower. I also noticed my battery light on the gauge panel was glowing faintly. Finally I realized it was not the cold weather and that something was wrong because the cranking got slower and the batt. light got brighter. I checked the battery voltage with the engine off and got something like 11.79v. With the car running I got between ~12.4 and 12.6v.

I thought the alternator should be pumping out about 14+v's.

I took the battery to the store where it was bought and ran a dignostic on it. They say the battery is fine.

So I've got a current draw somewhere or an alternator that is not alternating. I replaced the alternator less than a year ago when the old one failed at the track. The battery is also about 13 months old.

What could be the culprit here? A few guys at work said the starter could be the problem.
Any ideas how to proceed with the diagnosis?
_________________________________________
Is there a good way to test the alternator output?

Is there a method to tracking down current draws?
__________________
--
Chief Architect and Mastermind,
SCWDP
Old 02-10-2006, 06:57 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)