1G Weird electrical

[enriquez2000]

all of a sudden my warning lights that usually indicate alternator issues are acting funny. At light throttle the come on real dim... then as you increase they brighten up. Also my wideband cuts signal to the ecu when this happens but still functions by watching it. As soon as I let off no lights at all

Tested and im getting solid 14volts from the alternator. I assume a short is happening somewhere but for the life of me i cant see anything.

How are these lights triggered? Maybe there is a clue in that... or any idea what specifically I might need to look at?

 

[AWD-Tony]

So your battery light is coming on and off? Are you checking voltage at light throttle or just normal idle?

 

[enriquez2000]

Alternator is normal output through all of it

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[AWD-Tony]

Sorry Enrique. I’m stumped. Maybe check For voltage drop???

 

[enriquez2000]

Nothing is dropping.. its the weirdest thing... even link is showing 13.8v

Has to be a short triggering it. Are these lights a ground based warning system? Im thinking if they are Im getting voltage to them somehow triggering them to turn on falsely...

 

[AWD-Tony]

Check post #3. Looks like L gets charged and turns the charging light off when you start the engine

https://www.dsmtuners.com/threads/1g-alternator-voltage-sensing-wire.378936/

 

[enriquez2000]

I wonder if i could have a bad alternator relay "signalling" temporary low volts...

 

[AWD-Tony]

I’d say that terminal is losing voltage as the rpms go up. I’d check voltage there while you’re reving it.

 

[enriquez2000]

I’d say that terminal is losing voltage as the rpms go up. I’d check voltage there while you’re reving it.

Ill try that.. if its losing voltage at L i assume ill have to trace that wire back

 

[AWD-Tony]

Think it would be an internal alternator issue. If I’m reading that thread correctly, it supplies power from there to the light

 

[enriquez2000]

Think it would be an internal alternator issue. If I’m reading that thread correctly, it supplies power from there to the light

In that case i may be relocating it

 

[AWD-Tony]

Idk of that a good idea or not. I’d verify that’s in fact the issue first

 

[enriquez2000]

Idk of that a good idea or not. I’d verify that’s in fact the issue first

Of course ill check that first... i just upgraded turbos and gates so no more heat shield. If it is indeed the alternator ill relocate to take it out of the heat.

Test 1st though