shadyonedeath

iTrader: (10)

Doing this real quick while I search since today is my only day free this week.


I have replacement belts but I'm trying to narrow it down if its just the belts or the alternator too. At idle, the voltage drops to 12.9v-13-8v @ idle. Higher end of the latter with no load, lower end with radio/AC load. The belts are pretty worn, the groves are missing segments. Hypothetically, Would replacing the belts on a "bad" alternator ruin the belts? Or should I give it a try anyway? And I don't have a belt tension tool. Is it necessary or is there a method to wing it?


Thanks


Edit: oh, forgot to mention...on highway, or when acceleration, voltage rises to normal levels. Wondering if this is a belt slipping issue or not.

dwapenyi

iTrader: (3)

Replace the belts due to the cracks you see in the belts. Your alternator is fine. Being a belt driven device, the faster the engine turns, the better the ALT works.

The FSM quotes the performance of the ALT of 13.5V at <1000 rpm and 14.1-14.7 regulated. Remeber your idle is probably something like 600-700 RPM, so your reading of 12.9 V is not really low.

If you have to wing tightening the belts, the way I do it is to only tighten the belts to the point that they stop slipping.....or maybe just a smidge more.

DW

DennisMik

iTrader: (2)

The alternator is working fine. Just replace the belts. The FSM calls for .16 inch deflection in the section between the crankshaft pulley and the air conditioner compressor, pressing with a force of 190 pounds. That's really tight.

shadyonedeath

iTrader: (10)

Thanks fellas.

MAXC

iTrader: (7)

Still Have that alternator checked. There is no way you should be dipping into 12's even at idle with no load.

shadyonedeath

iTrader: (10)

changed belts, idles @ 14.2volts +1 for the .org.


The other thinner belt, I didn't touch.

asand1

iTrader: (1)

If you are telling us the voltage drops to 8v, then your regulator is toast and you need a new alternator.

If you are sayin its down to 12.8 then your fine.

shadyonedeath

iTrader: (10)

It's fixed.
and typo. 13.8