Alternator checks

[Mother]

I removed my alternator since It was not charging even alittle when cold. I removed it had it checked out and it was "good", I am installing a new regulator since it is out and am thinking of belt slippage problem since I run a custom supercharger however at this time am changing setup to get more grip on alternator.

I have a question the large wire on alt I get battery voltage but was wondering what I can check on the connector going to it if any that may cause a zero charge problem.

Edited August 24, 2011 by Mother

[logray]

Torque.

Corrosion. But you won't always be able to see that. Sometimes it's just easier to replace.

How old is the cable?

[Mother]

Not sure by what you mean "Torque"?

The cable is as old as the car 2000, but it has been in dry climate and seems I do not get any voltage build at all. Just wondering what the connector with the 2 wires that connects to the alternator do? I am replacing the alt reg anyway, but it did check out good at shop.

Edited August 24, 2011 by Mother

[JFP in PA]

What you may want to look at it the resistance (ohms) in the battery cables. From time to time we see a car with apparent charging problems that are actually caused by high resistance cables due to internal corrosion or bad connector ends

[Mother]

I will check the battery cables I am not sure what the resistance should be. Is there a resistance value if I go from the positive cable on battery back to the cable on the alt?

[logray]

Mother, take a look at this thread:

Among other problems, one of the problems I had was not charging the battery...

[Mother]

Thanks, I will revisit that thread allot of good info... the reason I dismissed it was that you actually had voltage build, with mine I have none. It is interesting problem because it was charging fine until installing my SC which leads me to belt slippage problem but checking these things first can save me 3 hrs labor to uninstall everything.

Edited August 25, 2011 by Mother

[JFP in PA]

I will check the battery cables I am not sure what the resistance should be. Is there a resistance value if I go from the positive cable on battery back to the cable on the alt?

There should be no resistance in the cables to and from the battery.

[Mother]

The voltage across bat=12.45V

alt + to ground (eng) = 12.45V

also to the terminal block in eng bay reading was 12.48V.

Replace with new reg from pelican and now alt does not work at all when tested - reinstalled old reg - retested and worked great. The PN# I got from pelican was F00M 144 136-395 and was for my year. They are checking it now.

Edited August 25, 2011 by Mother