Search results

All making sense now, thanks.

I tried to thank your post like 7 times bro, but it would not let me.

Interesting. Specs say exact same. Did you get the alternator from me? Sold a bunch recently, apology I can't keep track. If so, I have a replacement lower brace that allows you to make the stock serpentine belt system "adjustable", to set the tensioner anywhere you want it. I'll send it to...

Cute. You’re in rare form today, eh?

? No, it is not. Both specs says exactly same diameter. 2.37" OD (60mm).

That pulley looks same as the one I use and include. I don't think they make one smaller than that (?). Even that one, being as small as it is, may slip or at least squeak if the alternator is under full load, and the drive belt is wet. The smaller the diameter, the less belt wrap you have...

Excellent news, thank you for following up on this. It is why I stress the age and/or condition of batteries is directly proportional to the energy balance of an alternator's output at idle, volt gauge needle position, as well as the fuel shut off solenoid extending during cranking on the 8.3L...

It shows your batteries are at about 60% state of charge, and the alternator is working. The load into the batteries is more than the alternator makes at idle. Put a battery charger on each battery overnight to see if you can bring the charge level up.

Your batteries are severely discharged (equivalent to 11.8V on a 12v battery). Recharge them fully, they need to read close to 25.6v with the truck off. 12.8v per 12v battery represents 100% fully charged, healthy battery. 12.0v represents 80% discharged (20% charge). You are even below...

It works fine for most, a few see this issue. There are a couple of variables here. Depends on the alternator load. Of course the alternator does not make 100 amps at idle. How old are your batteries? I usually ship them with the smallest pulley available, but the 100 amp Delco units are...