Low voltage

[kennythewelder]

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You can get it tested at most any auto parts store. For free...

Can test it with a voltmeter as well. With all still hooked up. Start it and test the reading with a multi meter. At the back of the alternater and at the battery. Should be showing roughly 14.4ish.

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This is the proper way to do the job. Removing the battery cable is not, I admit. But like I said, I have dont it for years. Never had an issue doing that. I have even had the alt stick on full charge, frying the fuseible link, ( this is on the wire that charges the battery) and melting the aluminum cooling tube it was laying on. So the alt shorted directly to ground at full charge, and even this had no effect on the ECM. Maybe I was lucky IDK.

 

[Bigsky_Boarder]

So, I tried to start the truck today to get the battery\alternator tested and it won't start, tried to jump it and after charging for 10 mins won't even crank anymore. What could the problem be?

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[Bigsky_Boarder]

So, I tried to start the truck today to get the battery\alternator tested and it won't start, tried to jump it and after charging for 10 mins won't even crank anymore. What could the problem be?

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Never mind lol started right after I sent this idk what changed

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[east302]

You can get a multimeter at a big box store for $10, use that to check your battery voltage and the alternator output. It can also be used to check the battery cable voltage drop.

Let us know if you need a walk-through on it.

 

[east302]

By the voltage drop, I mean you can see if you have an issue with the positive cable. If it wouldn’t even crank, that would be something to look at.

 

[Bigsky_Boarder]

Got it to AutoZone and the alt is dead, won't charge the battery so I just have to replace that

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[kennythewelder]

Don't buy a reman. Ask for a new alt. It will cast a little more, but is well wort it.

 

[5vortec7]

How are your battery cables, ground straps and alternator charging wire? If there are any corroded terminals that could contribute to the irratic starting/charging issues. If you have any more problems, or kill that alternator quickly, I’d check those next. A big 3 upgrade may help you out. If it appears so, let me offer my services, have kits ready to go...
https://www.gmt400.com/threads/big-3-and-dual-battery-kits.41818/

 

[Bigsky_Boarder]

Grounds, charging wire, ect looked good I bought a reman because its all they had in stock and with a lifetime warranty you cant go wrong

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[Bigsky_Boarder]

Update: Turns out you can go wrong, got the wrong alternator and the store closed[emoji23] looks like this is my new ride for the time being

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