Fordmods Logo

New alternator and is it overcharging? 

 

Page 1 of 1 [ 7 posts ] 

 
 Post subject: New alternator and is it overcharging?
Posted: Sun Mar 31, 2013 6:03 pm 
Getting Side Ways
Offline
User avatar

Posts: 2644

Joined: 6th Nov 2004

Gallery: 8 images

Ride: 2007

Location: Mount Annan
NSW, Australia

Just replaced an alternator on BA and at idle I am getting over 15V (15.3V) across the battery terminals. I was expecting around 13.8V is the new one a dud?

 

_________________

BF Fairmont Ghia Series II update.
GQ XR6T ghia patrol.

,======o00o
//__|__|_,\_____\,___
|_/--\'_|'__|_/--\_[]IIII[]
_( o ) )_____( o ) )=o=) )__

Top
 Profile  
 
 
 Post subject: Re: New alternator and is it overcharging?
Posted: Sun Mar 31, 2013 6:08 pm 
Getting Side Ways
Offline
User avatar

Age: 44

Posts: 1204

Joined: 24th Apr 2010

Gallery: 1 images

Ride: Ef Fairmont

Location: Bleakheath
NSW, Australia

twase wrote:
Just replaced an alternator on BA and at idle I am getting over 15V (15.3V) across the battery terminals. I was expecting around 13.8V is the new one a dud?

I thought it should be 14.4 not 13.8?
Top
 Profile  
 
 
 Post subject: Re: New alternator and is it overcharging?
Posted: Sun Mar 31, 2013 8:16 pm 
Technical Contributor
Offline
User avatar

Age: 59

Posts: 5659

Joined: 14th Jan 2005

Gallery: 10 images

Ride: 96 XH/97 EL

Location: South Coast
NSW, Australia

Bit high I think Tony.
New or used alternator ??
What's the voltage when you put lights on ??

 

_________________

96 XH Longreach 'S': LPG, Alarm, 3.23:1 LSD, Cruise, Trip Comp, ABS, Power Windows, Mid Series Dome Lt, Climate Ctrl
97 EL Futura S/W: LPG, Alarm, LED int Lts, Trip Comp, F/Lane Dome Lt, Climate Ctrl, T5 Conversion

Top
 Profile  
 
 
 Post subject: Re: New alternator and is it overcharging?
Posted: Sun Mar 31, 2013 8:33 pm 
Getting Side Ways
Offline
User avatar

Posts: 2644

Joined: 6th Nov 2004

Gallery: 8 images

Ride: 2007

Location: Mount Annan
NSW, Australia

New, well its recoed but new everything except the case according to the ebay listing.
The terminal voltage is constant from idle to 3000rpm with the lights on or off.
http://www.ebay.com.au/itm/NEW-AU-BA-FORD-FALCON-6cyl-ALTERNATOR-/160918440558?_trksid=p5197.m1992&_trkparms=aid%3D111000%26algo%3DREC.CURRENT%26ao%3D1%26asc%3D14%26meid%3D6628356544545280677%26pid%3D100015%26prg%3D1006%26rk%3D1%26sd%3D160918440558%26

 

_________________

BF Fairmont Ghia Series II update.
GQ XR6T ghia patrol.

,======o00o
//__|__|_,\_____\,___
|_/--\'_|'__|_/--\_[]IIII[]
_( o ) )_____( o ) )=o=) )__

Top
 Profile  
 
 
 Post subject: Re: New alternator and is it overcharging?
Posted: Mon Apr 01, 2013 10:10 am 
Technical Contributor
Offline
User avatar

Age: 59

Posts: 5659

Joined: 14th Jan 2005

Gallery: 10 images

Ride: 96 XH/97 EL

Location: South Coast
NSW, Australia

Be wise to message the seller, IMO voltage is too high.

 

_________________

96 XH Longreach 'S': LPG, Alarm, 3.23:1 LSD, Cruise, Trip Comp, ABS, Power Windows, Mid Series Dome Lt, Climate Ctrl
97 EL Futura S/W: LPG, Alarm, LED int Lts, Trip Comp, F/Lane Dome Lt, Climate Ctrl, T5 Conversion

Top
 Profile  
 
 
 Post subject: Re: New alternator and is it overcharging?
Posted: Mon Apr 01, 2013 10:40 am 
Getting Side Ways
Offline
User avatar

Posts: 2644

Joined: 6th Nov 2004

Gallery: 8 images

Ride: 2007

Location: Mount Annan
NSW, Australia

We agree, in my opinion it is too high as well. Today I got some new brushes and installed them in the old alternator, put it in and tested it and it runs 14.4V with a partially discharged battery , perfect except for the noisy bearings. With the packing that came with the new one it had the test results printout and it indicates 14.4V. I will give them a call tomorrow.

 

_________________

BF Fairmont Ghia Series II update.
GQ XR6T ghia patrol.

,======o00o
//__|__|_,\_____\,___
|_/--\'_|'__|_/--\_[]IIII[]
_( o ) )_____( o ) )=o=) )__

Top
 Profile  
 
 
 Post subject: Re: New alternator and is it overcharging?
Posted: Mon Apr 01, 2013 10:13 pm 
Getting Side Ways
Offline

Age: 44

Posts: 1329

Joined: 5th Nov 2004

Ride: 66 Coupe

Location: Perth
WA, Australia

ba alternators have a sense wire that links back to the battery, if the wire has a bad connection or is broken, the alternator can overcharge, best thing to do it disconnect the grey plug off the alternator and measure the voltage on the two pins with the key on, and compare with the battery voltage
Top
 Profile  
 
Display posts from previous:
Sort by  
 Page 1 of 1  [ 7 posts ] 

Who is online

Users browsing this forum: No registered users and 8 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

 

 

It is currently Tue Mar 19, 2024 4:02 pm All times are UTC + 11 hours

 

 

(c)2014 Total Web Solutions Australia - Australian Web Hosting and Domain Names