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Charging problems - alternator or voltage regulator or...?
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Charging problems - alternator or voltage regulator or...?
Hi! How do you diagnose a charging problem? I had about 12.1V across the battery when it was running, but it is flat now. The problem seemed to come up quite quickly after a small 4WD'ing trip. So... any suggestions on how I determine what is wrong? Thanks! Oh, it's a GQ petrol BTW.
Re: Charging problems - alternator or voltage regulator or..
If it is only 12.1 when running, it sounds like it is not charging. Did you go through water, on this little 4x4 excursion of yours?carrot wrote:Hi! How do you diagnose a charging problem? I had about 12.1V across the battery when it was running, but it is flat now. The problem seemed to come up quite quickly after a small 4WD'ing trip. So... any suggestions on how I determine what is wrong? Thanks! Oh, it's a GQ petrol BTW.
you want around 13.6v, the voltage reg is inside the alt.
WD40 in the back may help but i doubt it if it already dried out. It could make it worse if it mixes with brush dust and causes the brushes to stick.
WD40 in the back may help but i doubt it if it already dried out. It could make it worse if it mixes with brush dust and causes the brushes to stick.
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CUSTOM AUTO ELECTRICAL SPECIALISTS
0404811498
LS1 & DURAMAX ENGINE CONVERSIONS, DRIVE IN DRIVE OUT. PATROLS AND CRUISERS
LS1 STANDALONE HARNESS $475ex
Would doubt it's a blown diode or a loose winding since there is 3 phases in alternators and at most you will only ever loose one at a time (in which case the alternator still charges but it isn't steady).
Is the alternator externally or internally regulated? Does the charge light come on when you flick the key to the "on" position with the engine off?
Do you have a multimeter? If you take a photo of the alternator showing how it is wired up, we might be able to help diagnose this further by telling you where to look.
Is the alternator externally or internally regulated? Does the charge light come on when you flick the key to the "on" position with the engine off?
Do you have a multimeter? If you take a photo of the alternator showing how it is wired up, we might be able to help diagnose this further by telling you where to look.
Stirling
1981 Series 3 Stage 1 Land Rover - 3.5L LPG V8 - 12:1CR - 6 35W HID Lights
2" Lift, 33"x12.5" Baja Claws & MaxiDrive front Locker
Videos:
http://www.youtube.com/user/stirlsilver
1981 Series 3 Stage 1 Land Rover - 3.5L LPG V8 - 12:1CR - 6 35W HID Lights
2" Lift, 33"x12.5" Baja Claws & MaxiDrive front Locker
Videos:
http://www.youtube.com/user/stirlsilver
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