2.8D Charging circuit

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niclemaitre
LR 4WD Full Lockers
LR 4WD Full Lockers
Posts: 698
Joined: Mon Jun 13, 2011 2:44 pm
Town: Stellenbosch
Vehicle: 87 DC 2.8D
Real Name: Nic
Location: Stellenbosch

Fri Feb 02, 2018 10:09 am

Hi there

Does anyone know how the 2.8D's charging circuit is supposed to work?

My 2.8D is a transplanted engine. The alternator is connected to a voltage regulator that only seems to be grounded to the body. Everything was fine, but now the alternator light is on constantly, even though the battery is charging when the engine is running.

I have zero idea how it should work, but I'm happy to listen to any ideas.

Thanks in advance
Happy trails
Nic

SFA '97 DC affirmatively shopped
SFA '87 DC "Rooies"

Mars
LR4WD, Lockers, Crawler Gears
LR4WD, Lockers, Crawler Gears
Posts: 1287
Joined: Mon May 07, 2012 12:33 pm
Town: Pretoria
Vehicle: Toyota Hilux Dakar 2.8 GD-6 DC 4X4
Real Name: Marnus
Location: Pretoria Oos
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Fri Feb 02, 2018 12:06 pm

Did you measure the voltage on the battery when the engine is running? Was it working initially after the transplant but now the light started coming on?

User avatar
niclemaitre
LR 4WD Full Lockers
LR 4WD Full Lockers
Posts: 698
Joined: Mon Jun 13, 2011 2:44 pm
Town: Stellenbosch
Vehicle: 87 DC 2.8D
Real Name: Nic
Location: Stellenbosch

Fri Feb 02, 2018 2:19 pm

The voltage on the battery is about 14.5V when the engine is running and 12.5V with it off, so the alternator is working. The transplant happened before I bought it, the electrics do look like they were done by a 5yr old though, but everything was working fine until recently when the alternator light has been on constantly
Happy trails
Nic

SFA '97 DC affirmatively shopped
SFA '87 DC "Rooies"

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