I took my truck to a local battery shop and had my battery tested. Test said I needed to replace my battery. Replaced battery and the light won't turn off.
Truck is a 1999 SR5, 4x4, v6

 

Check voltage across terminals with truck off should be at least 12v, truck on should be at least 13.5v or better.

 

whats the alternator putting out voltage wise?

 

I don't have the paper anymore but it said like 12.7 or 13.7 somewhere in there Thinking maybe mudding I loosened a connection?

 

What started this whole thing??

Your charge light came on after playing in the mud is that what happened??

Then you were told you needed a battery why??

Then you bought a new battery and your still the same place??

 

sounds like your alt brushes are dusted. if you were not charging it wasnt the battery. you should be at 14 for running or close to it and 12.6 with engine off on a full charge. try thumping the alternator with the handle of your hammer with the engine running and see if the light goes off most of the time this will jar them enough to make a little contact. if it does its the brushes and are like 2 dollars to replace parts wise.

 

What happened was I had ran the battery down a little bit listening to radio with the truck off. Then the light came on maybe an hour later and was just on when I was idle. Took it to shop had it tested said it needed new battery and after my other completely died and had to be jumped I jumped the gun and got the new battery. Now that light won't turn off at all. I'll go try the hammer thing

 

ever consider just getting the alternator tested?

 

We have a winner....




Well a few.
Alternator should have been tested by the battery place...I would do business elsewhere. .

 

Im a winner. Im using that all day.

 

Sometimes alternators and batteries fail together. Seen it a hand full of times. Once on an old honda and the rest were domestics.

 

Started truck and disconnected the battery and it died. So it's the alternator. Checking one last connection and if that ain't it gunna have to replace it </3

 

Removing the battery cable with an engine running is just plain dumb.

But if that is your thing go for it.

Because with a cable disconnected from the battery you no longer have a complete circuit.

No voltage to excite the alternator

 

A blurb on it here : http://www.ehow.com/how_7537506_test...r-battery.html

As they mention, not a good plan on newer, computer controlled vehicles. But, it is a 'tool' I have heard of in the past.

FYI -

Britt

 

Well it worked and fixed it haha. Bad connection in the back of the alternator