I started driving home from work today and about 15 miles from home my Red Battery light on the Dash lit. I got home and started the truck 2 or three times after having the doors open for a while. No problems with lights or radio etc...
Anyone know if that means my Alternator is about to go ? I'm thinkingof bringing the truck to Autozone to have them check the Alternator. If I need one they have a Gold Duralast lifetime warranty one in stock.
Anyone have any advice :
1 - Sounds like alternator most likely ? I got a new Deka Battery less than 12 months ago and never had it go down.
2 - Is Gold Duralast any good ?
3 - How hard is it to DIY replace ?
-- I get to add this to my a/c blowing out of defrost that I still haven't got to fix list ! lol
Offhand it does sound like a charging issue. Do you have a multimeter lying around the house? If so you can do a quick check by first checking the battery voltage with the engine off ( somewhere around 11.80 or so if I remember correctly ). Then recheck with the vehicle running and it should be somewhere near 14v or so.
Edit: I would first make sure that your connections are clean and tight since you mentioned a new battery in the last year or so.
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Had a VERY BUSY weekend with daughters birthday and more stuff - but I got a few minutes to do a little work.
Tightened the battery cables ( the negative was just a tad loose - so i retightened it ).
Then I took it around town for a while. The battery light stays lit , but when driving it uphill and trying to hold 2,500 - 3000 rpm the lights flickers off now ( instead of solid lit ) and after about 20 seconds of driving it at 3k rpms it finally goes off completely. The battery stays off for a few minutes but then returns after coasting around or not hitting that high an rpm for such a sustained period of time.
I also tested the battery with the engine running and shows about 11.x volts, best i could tell without finding the good digital readout voltmeter. Giving it gas to 3,000 rpms while in park still does not cause the battery reading to fluctuate...
Still sounds like the alternator may not be putting enough ? Should I put in a new alternator ? I'm looking at an Durastar Gold from autozone if I need one.
Duralast Gold alternators haven't given me a problem on the cars I've installed them on.
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Picked up a new Duralast Gold 130amp alternator at Autozone last night. Before heading out to work this morning I popped the hood and pulled the old one. Pretty straight forward - luckily nothing was seized or rusted through.
Drove to work and back about 45 miles roundtrip and no longer have any battery light. Looks like we're all good
So now that his issue has been solved... hope you all can help me. My red battery light comes on randomly while driving.
The batteries are less than a year old and were tested last month (good). I checked to make sure the battery cables are tight...
I just replaced my alternator (thanks ED) with a Ford Remanufactured one. When the light came on I had 14.3 volts driving down the interstate. The light went off and on randomly during my 3 hr trip. During idle now with the light off I am getting 13.6 volts and 12.5 with the engine off... my red battery light comes on randomly while driving and stays on for a while and then turns off randomly.
Drove around some more yesterday:
Watched the volts move based on RPM. If there were no electrical accessories on, at idle the volts would be 13.9. But the second you turn on the AC or fan the volts drop to 12.5 at idle. If you drive and get the RPM up above 1000 the volts would increase to 13.6.
Is it normal to see the volts vary with RMP and accessory usage so much?
I remember that when I installed the alternator at first the volts would be a healthy 14.5... but cant get that high now.
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