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BA XR6T - '03 - battery light on; advice? 

 

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 Post subject: BA XR6T - '03 - battery light on; advice?
Posted: Fri Apr 28, 2017 2:39 pm 
Parts Gopher
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Posts: 74

Joined: 23rd May 2010

Ride: BA XR6 Turbo

Location: Auckland
New Zealand

Hey all.

My battery light just came on, 200m from home at the end of a 400km+ drive. Talk about lucky.

What's the best sequence and process to determine what issue is? I do most of my own work on the car so I'm pretty mechanical, have a multimeter etc etc.

Just looking for the best approach to eliminate things in the best order, rather than charging down some path that might not fix the problem.

Notes to help diagnose:

Serpentine belt is tight and functioning.

Battery is nearly brand new.

Everything electrical looks to be connected properly and in good order.

The car recently had the leaky power steering issue (months ago) - steering fluid definitely leaked down into the alternator area before the leak was fixed.

Any help and advice much appreciated.

 

_________________

Previous cars:
XA GT351 sedan (manual)
XF/XE club race car (351 manual)
EL Falcon
EL Fairmont
AU XR6

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 Post subject: Re: BA XR6T - '03 - battery light on; advice?
Posted: Fri Apr 28, 2017 3:01 pm 
Parts Gopher
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Posts: 74

Joined: 23rd May 2010

Ride: BA XR6 Turbo

Location: Auckland
New Zealand

Multimeter on battery with engine off is around 12.5V

Repeat the test with the engine running - voltage remains roughly the same (~12.5V).

 

_________________

Previous cars:
XA GT351 sedan (manual)
XF/XE club race car (351 manual)
EL Falcon
EL Fairmont
AU XR6

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 Post subject: Re: BA XR6T - '03 - battery light on; advice?
Posted: Fri Apr 28, 2017 4:17 pm 
Parts Gopher
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Posts: 74

Joined: 23rd May 2010

Ride: BA XR6 Turbo

Location: Auckland
New Zealand

Multimeter on battery with engine off is around 12.5V

Repeat the test with the engine running - voltage remains roughly the same (~12.5V).

 

_________________

Previous cars:
XA GT351 sedan (manual)
XF/XE club race car (351 manual)
EL Falcon
EL Fairmont
AU XR6

Top
 Profile  
 
 
 Post subject: Re: BA XR6T - '03 - battery light on; advice?
Posted: Fri Apr 28, 2017 4:24 pm 
Fordmods Junkie
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Posts: 2750

Joined: 22nd Jan 2009

Ride: '91 EB Wagoon

Location: Geeelong
VIC, Australia

get a sparky to do a load/battery/alt test on car - tests battery & alt. had to have one done on one of my cars. fitted new battery but still had problems with no start. people that supplied batt did this test with no problems & sparky did it too. 2nd time sparky checked it out ... showed up battery fault. anyway ended up with a brand new battery & car was fine after that :mrgreen:
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 Post subject: Re: BA XR6T - '03 - battery light on; advice?
Posted: Fri Apr 28, 2017 5:08 pm 
Parts Gopher
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Posts: 74

Joined: 23rd May 2010

Ride: BA XR6 Turbo

Location: Auckland
New Zealand

[quote="Mad2"]get a sparky to do a load/battery/alt test on car

Cheers man. But the reason I'm researching here is so I DON'T need to get a sparky in. :) I usually fix everything myself on my cars, unless it's something that involved plugging in a diagnostic computer...

Thanks for the suggestion.

 

_________________

Previous cars:
XA GT351 sedan (manual)
XF/XE club race car (351 manual)
EL Falcon
EL Fairmont
AU XR6

Top
 Profile  
 
 
 Post subject: Re: BA XR6T - '03 - battery light on; advice?
Posted: Fri Apr 28, 2017 6:17 pm 
Fordmods Junkie
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Posts: 2750

Joined: 22nd Jan 2009

Ride: '91 EB Wagoon

Location: Geeelong
VIC, Australia

ok ... then checkout internal condition of the alt with a bright light. if it looks really crappy . . . replace it with a known working unit? did that with other half's BF [no problem with the light] .. did appear to be a change afterwards.
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 Post subject: Re: BA XR6T - '03 - battery light on; advice?
Posted: Sat Apr 29, 2017 10:22 am 
Technical Contributor
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Joined: 13th Jul 2013

Location: Campbelltown
NSW, Australia

Alternator will have oil damage from leaking power steering change it .second hand will most likely have same problem. Check power supply is present at main connection to alternator.
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