voltage meter fluctuation
Thread Starter
|
Freshman User
Joined: Sep 2015
Posts: 48
Likes: 0
voltage meter fluctuation
So it's raining where I live (uncommon) and I've got a new motorcraft battery (so it's not the issue).
On wet starts, the red 'amp' warning light comes on and the battery meter in the top right of the gauge cluster dips toward the 8 volt end for ~5 minutes. Once the car starts to get warm, the charge meter quickly jumps up again, toward 18, and the light goes off. Are there any common trouble spots for bad grounds or other connections?
I've also got an original alternator in there and I had a stone-cold dead battery in there for a few days before I replaced it--may have overworked the alternator. Are alternators weak on the Aeros?
On wet starts, the red 'amp' warning light comes on and the battery meter in the top right of the gauge cluster dips toward the 8 volt end for ~5 minutes. Once the car starts to get warm, the charge meter quickly jumps up again, toward 18, and the light goes off. Are there any common trouble spots for bad grounds or other connections?
I've also got an original alternator in there and I had a stone-cold dead battery in there for a few days before I replaced it--may have overworked the alternator. Are alternators weak on the Aeros?
Post Fiend
Joined: Apr 2002
Posts: 19,311
Likes: 97
From: Waterloo, Iowa
Electrical System
Some tests you'll need to make with your voltmeter. Basically checking how the alternator performs while under load.
Loose, missing, or corroded grounds or cables will cause trouble. Look under "voltage drop testing" at the link for further testing on that. Let us know what you find.
Some tests you'll need to make with your voltmeter. Basically checking how the alternator performs while under load.
Loose, missing, or corroded grounds or cables will cause trouble. Look under "voltage drop testing" at the link for further testing on that. Let us know what you find.
Thread
Thread Starter
Forum
Replies
Last Post
DJdemon6696
1987 - 1996 F150 & Larger F-Series Trucks
13
Oct 1, 2007 06:39 PM
