Generator Light, Is On Options

[EdwardBlume]

Was driving last week and the generator light came on, went off, came on again, and then it stayed on.

Belt is on, VR was swapped with another I have around (and another is on the way), ground at the tranny is connected and good, battery charged and tightened, fuses 8 & 9 are good and new, spun to make sure they are connected.

Voltage meter is showing 12 to 13.

Anything else I can troubleshoot before I pull the generator? (IMG:style_emoticons/default/dry.gif)

[Spoke]

Rob,

Copying my PM to you with additional info:

Since you've changed the alternator, VR, and battery, I have questions about the operation.

Do you measure those numbers right after starting the car or after a bit of driving? Does the light go out or on dimly?

With all new components, it may be some of the wiring at issue. Don't think it's a short. May be a corroded or oxidized connection somewhere.

Does the light go out when the engine speed is elevated to 2k RPM or above?

On the wire going from the alternator to the VR, measure the voltage on the RED wire to chassis and BROWN wire to chassis. The RED wire is the wire going to the GEN light. Just checking if there's some voltage drop from the VR to the GEN light. The BROWN wire is alternator ground. Just checking to make sure the engine/alternator is grounded.

What voltage do you measure on the battery? Measure this from battery post to chassis ground.

When the engine speed is elevated to 2k RPM, what do you measure on the battery?

What is the condition of the transmission ground strap? Have you cleaned/checked the connections?


What is the condition of the battery ground strap? Have you cleaned/checked the connections?

Any bit of oxidation or corroded wires/connections can cause huge problems for the charging system.