VR Low Voltage

[paladin06]

Well for those who followed my charging system journey know that's it's been a tough go. Well after many hours of wire fixing, new parts and more new parts, I finally got the road runner to pass the charging system electronic diagnostic test. All system pass but the test did indicate a VR low voltage.

Any ideas?

 

[snakeoil24]

Poor Ground

 

[bigblock]

Faulty VR?

 

[paladin06]

I'm on my 5th VR and ground is on bare metal..

 

[snakeoil24]

Wiring to Alternator is wrong.

 

[paladin06]

I did the wiring mod. 8 gauge wire direct to SR from alt and from battery to SR.

Wiring to Alternator is wrong.

 

[paladin06]

How do you guys mount your VR? Do you mount it directly to the firewall or do you put washers between the VR and the firewall?

 

[snakeoil24]

Direct

 

[paladin06]

Well one thing I overlooked is the fact that I never started this long and PAINFUL process with a FULLy charged battery. Hummmm

 

[paladin06]

OK, checking the voltage at the two field post on the ALT. Only .5 volts at both post loaded and unloaded. How can this be if the ALT tested good with a hand held machine?

 

[paladin06]

I finally got it. Thanks everyone for your support. Details to follow.

 

[Sunset]

Having issues as well. Details?

 

[paladin06]

If you read through my threads you will see my journey and the final solution. There was a lot involved. Exactly what is your car NOT doing?

 

[Sunset]

Car was not charging, new alternator, new VR. Luckily, I ended up coming across the thread about grounding one of the two field leads off of the alternator. Did this today and I am in business. Thanks for the reply, often these things are not followed up on.

 

[paladin06]

Glad we could help..

 

[AMX364]

paladin06 what was the final solution? Although you said you would post the fix and thanked another user for information, I was waiting for your final fix. My best guess was engine grounding, but only a guess.

 

[paladin06]

Final fix was the low/high beam floor switch. It was not grounded to the bear metal. Cleaned it up the mounting are real good, also replaced the switch and BINGO.