Ford Super Duty (1999-2016) :: Battery Light On But Alternator Is Charging?
OK I have 14.04 volts at the batteries with the engine running but my battery light is on. I had the alternator checked off the engine and on the engine and it tests good. Shows good batteries and good charging. Is there something internal to the alternator that would make the light come on even though the alternator is charging ok? Or is there something else that would make the light come on. This is on a 1999 F250 Superduty Powerstroke 7.3.
View 14 RepliesFord Super Duty (1999-2016) :: Alternator Quit Charging - Battery Light Came On
My alternator quit charging last night. Was pretty much a sudden onset as I was driving down the road and left off the accelerator the battery light came on and lights dimmed a bit. When I stepped on the accelerator again they bat. light went off and the lights came back up.
At idle I'm at 11.77v. I've pulled the plug on the back of the alternator and I'm getting voltage on both the red and green wires that go into the plug with the engine running. Is this correct?
Ford Super Duty (1999-2016) :: ABS Light Turns On When Alternator Is Not Charging Battery
Pretty much as the title says, I'm having an interesting electrical gremlin. Ford 7.3 super crew 2002 lariat LE.
I have batteries from 2015 that are losing their charge, both of them. It's like the alternator isn't charging them. Truck will struggle to start until jump started, then she's fine.
Symptoms are:
ABS light comes on when as best I can tell the batteries aren't getting charged. Not the battery indicator.
Now that the batteries are low enough, on the instrument cluster the little light the powers the mile LCD screen dims when it's not getting power (but it's fine when the batteries have charge.)
All accessories work when driving, but I haven't been able to drive a long while on the "not charging phase" to see how low they're go.
Batteries register dead (now) because they haven't gotten charge in a while.
When the alternator IS charging or "connected" I can leave the truck idle and she'll charge the batteries, truck will start just fine on the next run (no parasitic drain.)
Driving causes this to happen randomly, doesn't happen when I'm stationary, nor do I believe it CHANGES state (so if I'm idle it won't suddenly NOT charge if it was charging before.)
Narrowed down to 2 probable things.
Alternator
Bad alternator to battery cables
Ford Super Duty (1999-2016) :: 2004 - Replaced Alternator Now Only 1 Battery Charging?
I had to replace my alternator (single unit) and after installation it seems only 1 of the 2 batteries is charging when I check them while the truck is running. What check or could be the problem?
View 1 RepliesFord Super Duty (1999-2016) :: Battery Light Flickers On Highway Having 50% Charging - No Alternator?
for some reason my battery light flickers when im driving regular and on the highway. I have had both batteries checked and they were at 50 percent charge and both were good so therefore I assumed it was my alternator. I removed alternator had it check and it passed all test. Everything was checked at o'reilly and autozone
View 8 RepliesFord Super Duty (1999-2016) :: 2000 Excursion V10 Not Charging With New Alternator
I have a 2000 excursion that stopped charging. The battery light is on . I replaced the alternator but it still will not charge. I have checked all the fuses. Not sure where to go from here...
View 2 RepliesFord Super Duty (1999-2016) :: 2002 F350 - New Alternator Not Charging
2002 f350 super cab 7.3 diesel, replaced alternator because wasn't getting charge to batts, Napa guy checked batts and determined no charge, replaced alt, still no charge, have 12v at alt post with engine running or not. My ? is, is there a fuse in here somewhere that I'm missing? Went through all fuses in fuse panel all good.
View 7 RepliesFord Super Duty (1999-2016) :: 2003 F250 - Noisy Alternator - Bearing Part Number?
I have an 2003 F250 with a nosiy alternator and need to change the bearings. I would like to have the bearings on hand before i take it apart. What is the part numbers for the bearings I need?
View 3 RepliesFord Super Duty (1999-2016) :: Changed Alternator And Now Have Battery Light On
I put an O'reileys alternator in my truck today. Drove it most the day and did some plowing with it and it was fine. I just went out to run to the gas station and now the battery light is on. The voltage is still good.
View 14 RepliesFord Super Duty (1999-2016) :: Battery Light Came On - Alternator Quit
I have a 1999 f-350 V-10. My battery light came on, making me believe that my alt. has quit. I can't see the plaque on the alt so I can't tell the amps. Does my serial number on the truck tell the amps, or do i have to remove the alt to check the amps?
View 3 RepliesFord Super Duty (1999-2016) :: 2003 F250 - Battery Light Came On Intermittently?
I have a 2003 f250 super duty with a v10
i was towing a trailer up and down lots of hills and the battery light on the dash came on. there was no effect on the performance right away. as i kept driving into town i was starting to worry if i would make it.
as i pulled into the carls jr parking lot, the ABS light came on, all the gauges shut off and the truck died just as i pulled into a parking spot.
i figured it was the alternator, had it tested at AutoZone (failed twice) so i swapped it out for a lifetime warranty AutoZone one (very small town, nothing other than an AutoZone)
the truck started after being jumped but the battery light was still on. i figured that the bad alternator killed the battery. the battery was 4 years old and they usually only last 3 years in the AZ heat so i bought a new duralast gold.
the battery light was STILL on after that. the Autozone guy ran his test--- engine off- battery tested fine starting---he said something was wrong with the starter (but it cranked awesomely!) running--alternator tested fine
i just can figure out why when i drive down the road i dash light will turn on and off at random times. the truck seems to run fine. I've even been under the hood shaking the wire while i had someone watching the dash and i cant seem to make the light go on or off
Ford Super Duty (1999-2016) :: Bearing Squeak And Headlights Flicker / Battery Not Charging
I replaced my alt. because in the morning the bearing would squeak and the head lights flicker. It was a life time alt. Put the new one in now it wont charge. Took it back and got another, same thing. Also replaced the starter relay and battery. I checked the fusible links and replaced a terminal connector. The wires look good. There is 12v on the alt lug and pins 1 and 3 on the connector with the key off. Turn key on and 12v disappears form pins 1 & 3. Also checked all fuses in both boxes. I ohmed out the wire harness from the alt back to the connectors, all good. What am I missing? This is a 99 f530 5.4l.
View 9 RepliesFord Super Duty (1999-2016) :: 2006 F350 Won't Start At All - Alternator Or Battery?
I went to start my 2006 F350 6.0 this morning. 20 degrees outside. It nearly turned over, then it appeared that the batteries would not support another start - a slowing of the pre-engine start revving....
So I let it sit a while, now it won't start at all. When I try to start it, the dashboard flashes, clicking sounds occur and even after pulling out the keys, the needles on the gauges shake for a few seconds.
Is this more a battery issue or an alternator issue?
Ford Super Duty (1999-2016) :: 2003 F250 - Battery Light On - Gauges Shut Down - Radio Turn Off?
03 f 250 super duty, my battery light came on and when I accelerate my dash gauges shut down and radio turns off, if I idle or stay under twenty MPH, everything works fine. Battery and alternator test good, lights never dim, any thoughts
View 4 RepliesFord Super Duty (1999-2016) :: 2003 F550 - Batteries Not Charging / Instrument Cluster Does Not Work
I have a 2003 F550 6L diesel flatbed truck. Last week, the overdrive button would activate by itself. I'm assuming there was a loose wire so I taped the button to keep the overdrive off. Two days later, the overdrive came on while the button was pressed in and then smoke came out of the steering column/lever area. I pulled over and turned off the truck. The smoke stopped after 10 seconds and I restarted the truck. The overdrive light/functionality no longer worked and the instrument cluster also wasn't working.
The next day I was driving, and the truck died at a stoplight. I got it towed home, and opened the steering column and noticed that the overdrive button wire had burned. I removed the harness clip and charged the batteries. It started but the instrument cluster still didn't work. 2 minutes later the truck died. I replaced the alternator but still it won't charge the batteries. The truck dies 2 minutes after getting a battery boost to start the truck. The instrument cluster also doesn't work. What could be causing this issue?
Ford Super Duty (1999-2016) :: F250 - Battery Keeps Dying
I have a 1999 f250 super duty and something keeps draining my battery, I replaced the old one and im having the same problem. What could it be?
View 14 RepliesFord Super Duty (1999-2016) :: 2013 F250 - Low Battery And CEL
2013 F250. Wife turned the ignition on to roll up the windows before the storm (good thing), but left the switch on. Both batteries dead. I charged them both (although not completely). Started OK but have a check engine light on. Should I just put the batteries back on charge?
View 5 RepliesFord Super Duty (1999-2016) :: F250 V10 Battery Going Dead Overnight
Like the title says, if it sits over night the battery will be about dead. The cables were replaced 6 months ago and are in good shape. I could not find and bad spots on the wires I can get to. One odd thing to note, with the key out of the switch I opened the passenger door to check the glove box light and the truck started chiming like I had opened the drivers door with the key still in the switch. Would that indicate maybe the key switch could be the issue?
View 14 RepliesFord Super Duty (1999-2016) :: 2011 F250 - Battery Almost Blow Up / Nothing When Put In The Key
So two weeks ago I had a battery melt on me and I replaced it. Then last week I had the other battery almost blow up on me (it was a mess and smoking). I didnt use it all weekend. Today it started right up. I drove it like 500 feet and it just died. It is very weird. Both batteries are fully charged. Relay is good. When I put in the key it does nothing. No sound no radio no clicking. However, the gps still works (the online monitoring kind). I can fold in my out revie mirrors. And I can lock and unlock the doors. and the interior overhead lights come on. Nothing else has power at all. And I can't put it in neutral. Right now the truck is blocking my driveway so nothing can get in or our of here. I am wondering if it is some type of antitheft issue...
View 5 Replies