this weekend i went and drowned my v6 toyota in mud puddles like i have done for 3 winters in a row well as i shut my truck off to talk to friends and as i started it up it seems to start up fine and runs fine but my batterie lite wont go out on my dash i when i pull my charging fuse 7.5 amp out under the hood it goes out with the truck running and comes back on as soon as i put the fuse in it been about a week since i went puddle skippin and has been rainin here since mabye i got the wiring harness wet and needs time to dry out possibly I have a brand new optima batterie the alternator seems to be charging ok headlights arnt dim and me needle dosent even bounce when my 800 watt stereo system hits it doesnt seem to be a big problem i was just wondering if any knows waht it could be.

 

Sounds like the alternator.... stick a voltmeter on the battery terminals and see what the voltage is, should be 13.5 to 14.5 volts.... if its lower, then the alt isnt working, and your runnin everything off the battery...

 

battery is fine voltage is 14

 

i'll see if i cant dig up a wiring diagram and figure out what might be setting it off... im moving tomorrow, so it might take a bit, hopefully someone else will chime in....

 

Could be a bad ground. Those lights are really sensitive. It could be the belts, I'mhaving a problem with mine at the moment as well. But I think I may have it solved.

 

Even if the alt is charging doesn't mean it doesn't have a bad diode causing to much ac voltage through the system. Or the regulator is bad grounding the light circuit but still telling the alt to charge. So either the alt needs replaced or the charge light wire is grounding out somewhere. Most likely the alt. Too much mud and water.

 

I have had the same thing happen to me. I went through a mud hole and my break & charging light came on.

I have replaced the battery ...... went through 4 alt 3 of those were from NAPA and I still have both of the lights. I have replaced the fuses at the box under the hood and checked the fuse box under the dash.

What am I missing?


Thanks,

Dave