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Replaced alternator, but battery light stays on
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Jukka Heikkila
• Helsinki, XX, Finland
• Registered on 7/30/2004
• 25 posts
1 Vehicle
Posted:2/1/2006 04:06
Hi Eric
Problem solved on my friends X. He tried three new altenators on it and they all kept the light on.
Then he opened the last altenator, and as they in most cases are either rebuilt or manufactured somewhere with less expensive workforce, he found the problem. The regulator inside had too much protective wax on it so that it could't get the ground properly. Little sandpaper to connection and life became easier again = light turned OFF.
Parently the other "new" parts had the same problem, as they came from same supplier.
All readings in meter shows normal and light stays off.

Just in case he planned to change the CPS sensor, as he had heard that altenator problem and CPS sensor have been somehow linked with problem cases.

Jukka
Bill Johnson
• Rio linda, CA, USA
• Registered on 6/11/2002
• 201 posts
1 Vehicle
Posted:2/2/2006 08:52
Eric,
When you replace your alt, go through and remove and replace your grounds. Sometime this stuff gets loose, dirty, whatever. Sometimes the body strap can become an issue. I upgraded my wire size at the alt, battery, and body and incressed my voltage from 13.6 to a solid 14.4.

Co- Owner Diablo Audio Technologies
Yahoo IM - kingsuv00

If the listening level is too loud, please inform the driver, so he can promptly pull over, and let you out.

E. Long  Club OwnerSuperMotors Owner
Subscriber
Subscriber since 1/1/2001
• Atlanta, GA, USA
• Registered on 1/23/2001
• 2,229 posts
1 Vehicle
Posted:4/10/2006 23:00
Today I finally went back to Napa, got a replacement alternator (under the 3-year warranty on the last "new" alternator I bought from them). I installed it and NO MORE BATTERY LIGHT!! Woohoo

Will be returning the defective one tomorrow.

-Eric

'67 Galaxie 500 - 390 FE, .030" over, FE to AOD adapter, disc brake conversion. The Daily Driver.
'00 Excursion - 7.3L PSD, LANDYOT Gen-II Radius Rods, Factory Tech Valve Body, 200K+ miles and going
Jukka Heikkila
• Helsinki, XX, Finland
• Registered on 7/30/2004
• 25 posts
1 Vehicle
Posted:4/11/2006 02:08
Good to hear Erik
So your problem was as well a bad "new" part. Same as in our case. Seems that it's always worth paying extra buck or two to get a proper replacement part.

Jukka
E. Long  Club OwnerSuperMotors Owner
Subscriber
Subscriber since 1/1/2001
• Atlanta, GA, USA
• Registered on 1/23/2001
• 2,229 posts
1 Vehicle
Posted:4/11/2006 02:10
$250 for the Napa 3-year warranty alternator. I didn't think I was going the cheap route, but apparently I was. Glad it was under warranty. Should be smooth sailing from here on out.

-Eric

'67 Galaxie 500 - 390 FE, .030" over, FE to AOD adapter, disc brake conversion. The Daily Driver.
'00 Excursion - 7.3L PSD, LANDYOT Gen-II Radius Rods, Factory Tech Valve Body, 200K+ miles and going
HBJJAM
• Minneapolis, MN, USA
• Registered on 6/23/2005
• 94 posts
1 Vehicle
Posted:4/11/2006 09:00
Quote:
$250 for the Napa 3-year warranty alternator. I didn't think I was going the cheap route, but apparently I was. Glad it was under warranty. Should be smooth sailing from here on out.


I too bought the 'new' alternator for my Cutlass. It has the 3.4 motor and you basicaly have to tear down the right front drive line to get it out
Shop wanted $500+ to replace it just labor alonw

But after 6 months i think it is giong out again because all the lights on the car 'flicker'
The "flicker" goes faster as the rpm's go up
E. Long  Club OwnerSuperMotors Owner
Subscriber
Subscriber since 1/1/2001
• Atlanta, GA, USA
• Registered on 1/23/2001
• 2,229 posts
1 Vehicle
Posted:4/11/2006 13:47
Fortuntely, Ford had a better idea on this one (or maybe Navistar did), the alternator is right on top and takes less than 10 minutes to replace.

-Eric

'67 Galaxie 500 - 390 FE, .030" over, FE to AOD adapter, disc brake conversion. The Daily Driver.
'00 Excursion - 7.3L PSD, LANDYOT Gen-II Radius Rods, Factory Tech Valve Body, 200K+ miles and going
Ford Excursion Forums > Ford Excursion V8, V10, and Powerstroke > Excursion Discussion
Replaced alternator, but battery light stays on
Thread Statistics:     Users to Post: 10   |   Total Posts: 27   |   Total Views: 23379
You must be logged in to post in or subscribe to this thread.Pages: 1 2 3

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