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  1. T

    2003 Explorer - strange noise under hood turned out to be failed new part!

    Ironically, back in August 2022 I put a new alternator on my 2003 Ford Explorer XLT AWD with the 4.0 V6. The one on it had stopped charging. I got one from Rock Auto and went with the AC Delco brand. Unfortunately, 2 years later (almost to the day) that alternator started making a chirping noise...
  2. S

    2020 Explorer Platinum Electrical Issues

    New member here...first post. Grab a drink... 2020 Exp Platinum 3.0Eco. Frequent and multiple electrical issues. Started with multiple TPMS faults, many trips to dealer, reprogrammed multiple times, finally replaced all 4. No further issue. THEN...(all the below on various/different dates)...
  3. J

    Alternator, Voltage Regulator, Brushes?? Pulsating voltage, lights, etc...

    1999 Ford Explorer XL - OHV Engine - 180,000 miles - Original Owner - Sorry, long story...as I want to get all the facts in that I can... Recently, my son called and said, that after he started the Explorer, that the backlighting on the dash was "pulsing", the voltage indicator on the dash was...
  4. spinnn

    Solved alternator charge stud extender

    Hey everyone. So I bought a 200 amp alternator but it has the battery cable stud on the back, not the right angle adapter that puts it on top of the alternator. Does anyone know where to get the adapter? It'll make the connection a lot easier when I go to connect a heavy cable to it. Thanks.
  5. P

    Upgrade to High Output Alternator?

    Heya. I have a 98 Mountaineer w/ 4.0L V6 SOHC. I am currently using a 130 amp Duralast DL3406-16-4. It is dying and I need a replacement. I saw that 200 amp alternators are available for this truck on RockAuto and Amazon, and I wondered if it is worth upgrading? I don't think I even come close...
  6. C

    2010 Battery Warning light

    My 2010 Ford Explorer has been having the battery warning light coming on and off for about 2 mo. I replaced the battery 3mo ago. The other night it went crazy. While at idle in park the dash lights starting flickering and then went off then the headlights went off. Battery was dead and couldnt...
  7. A

    2011-2015 Explorer alternator pulley nut size?

    Shot in the dark here but does anyone know the pulley nut size on the alternator of a 2014 (2011-2015) explorer? Knowing this would really help
  8. T

    Solved 2005 Explorer Alternator Wiring.

    My 2005 V6 flex 4WD Explorer is throwing a Check Charging System message on the dashboard. Fully-charged (separate charger) battery reads 12.4V. So does the main B+ post on the alternator. With engine running the battery reads 11.2V. I'm trying to verify wiring, fuses, fusible links before...
  9. M

    2017 Limited issues after battery and alternator replacement

    2017 ford explorer limited 3.5L V6 Just yesterday I had both my battery and alternator replaced and the battery light flashes charging system service. When I drive the battery light goes off and on, and the car never loses power. However I do notice my interior lights flicker a bit and when my...
  10. E

    Mystery Voltage Issue

    Hey all, made this account here to see if anyone could possibly help me out with this problem as I'm at a complete loss. I have a stock 2000 Ford Explorer Sport with the 4.0 OHV V6 About 2 days ago when I dropped my stepdaughter off for school I noticed that when I put the truck in Park the...
  11. S

    Battery light 02 explorer

    Afternoon fellas. So I have been over more posts in this forum than I can count and I can’t find a solve to my issue. 02 explorer xlt 4.0 motor sat for 2 years and had the need to resurrect. Did a bunch of work to her simple stuff brakes, rotors, calipers, new battery etc. Battery light it on...
  12. P

    12 inch sub fried my alternator

    I hooked up my 2400w planet audio amp and my 12 inch kicker its 300 RMS and peaks at 600. I also swapped my head unit out for a boss audio head unit. Once I got everything hooked up I was rolling around bumping hard for probably 30 or 45 minutes and my battery light came on and then shortly...
  13. TsherryUSA

    Autozone saved my A$$

    Just a short little story about last weekend. Sunday AM my friend and I climbed Mt. Adams in Washington. We got up at 11:30pm (saturday) and began our hike from the trailhead at 12:30am (sunday). Round trip it was ~12mi with near 7000' elevation gain. Conditions on the mountain were beautiful...
  14. 2

    Headlights/Dash Lights Flickering

    I noticed recently that my headlights and dash lights have a slight flicker at idle, when in drive. It goes away if I raise the rpm’s or if I turn the truck off. I had the alternator tested and it was fine, but I noticed that when I tested with my multimeter the voltage would jump around. It...
  15. W

    Engine Question

    Okay, here's the deal. I have a 1997 Ford Explorer. It is the XLT 4.0 OHV it is 4WD 4 door. It is my daily driver with 189,700 miles on it. So far I have replaced the following : Recent Oil Change Trans fluid and filter replaced Rack and Pinion was fixed not replaced it had a leak The...
  16. B

    Alternator failing and no brake lights

    I have a 2003 Explorer 4WD 4.0. XLT Battery light on. OBD2 states alternator low voltage. Explorer starts. Cannot get shift lever out of park. Do not have brake lights. Is it possible to have alternator and brake light switch problem or could it be a relay that would affect both? Scanned...
  17. A

    My 1993 Aerostar will not start.

    I have several questions. Today My Aerostar would not start I still had battery juice and it didn't even try to crank. My brother told me to touch metal to the starter while cranking well I put metal on the alternator instead it started right up. 1. Could touching metal to top of alternator...
  18. D

    Electrical? Transmission? Help!

    I'm hoping someone can help me. I have an 03 ex 4.0 I've had for a little over a year. It sat for 2 years because of a gas leak they couldn't or didn't want to fix. We put a battery on it and drove it home with no problem except gas leak and door ajar light on. And a new fuel pump fixed the gas...
  19. E

    Belt Size

    So i am going to be putting a 270a high output alternator in my 2019 2.3 explorer. Does anyone know the deminsions of the serpentine belt? I need to go .5"-1" smaller than stock belt. Thanks in advance!
  20. B

    Solved Alternator issues.

    When the Check Charging System light came on on my 2005 Explorer XLT, I changed the alternator. That did not correct it. I changed the battery. No change. I finally figured that maybe I got a bad alternator (from Advance Auto) so I got another one from a Ford Dealer. It was rebuilt but they...
  21. S

    Checking Charging System

    Hi, all. First of all I just wanted to say thank you in advance for anybody who can come up with any answers or has any advice whatsoever. Also, I apologize for the novel and if there are spelling errors because I used talk-to-text. TL;DR... checking charging system error started happening...
  22. T

    Avoiding self-destruction with a power inverter...

    I'm wondering if purchasing a 1000 W power inverter (ie. Amazon/Harbor Freight Tools/etc.) and running tools--like a cut-off wheel (7 A)--would damage my stock alternator/battery/electronics? I also have a portable carpet/upholstery cleaner (6 A) that would be nice to be able to use. Has anyone...
  23. A

    SOS No Crank No Start

    I am brand new to this forum, thank you for accepting me to this forum. This is my first post! I have a 2008 Ford Explorer XLT, 4.0 V6, 4WD. It has 130,000 miles. Here is the list of electrical symptoms I have had recently - starting a month ago it took a few more cranks than usual to start up...
  24. BrooklynBay

    Has anybody modified their charging system?

    My stock 7750 3G alternator in my 1995 van is rated at 95 amps which is low compared to more modern vehicles which use 130 to 160 amp alternators. I've looked into 350 to 370 amp alternators but they cost almost $500 which is a huge investment in a 25 year old vehicle. The reason why I'm doing...
  25. L

    Alternator

    I’ve got a 2016 limited with the 3.5, around 68,000 miles. Without any codes or warnings, It wouldn’t start this morning, and after getting it fired up from a booster got it to a shop. They said the alternator was bad and want $900+ to fix. Not happening. I’ve searched the forum for more...
  26. J

    Camshaft Position Sensor/Electrical Problems

    As stated in a previous post, I have multiple codes on my 2003 Ford Explorer Centennial Edition, 4.6L. After testing my alternator I figured most of them were due to it being weak. After removing countless alternators at the junkyard and testing them outside of the vehicle, I finally found one...
  27. U

    '04 Exp--3 stalls while driving, now "Check Charging System"

    So my 2004 XLT Explorer just recently started misbehaving. 3 times in the last week, the engine simply quite while driving at low speed (25-30mph), but never at higher speeds. Engine would restart immediately, no problem. No other issues or symptoms were observed...until yesterday. Now, while...
  28. A

    Possible Voltage Regulator or Battery Failure

    I have a 2000 Ford Explorer Limited I'm working on and I'm trying to figure out whether I need to get a new battery, a new alternator, or just a new voltage regulator. The battery before starting reads a decent 12 volts, but reads 14.6 or so once running, which seems a bit to high. Occasionally...
  29. L

    Voltage Issue

    I have a 00 Explorer Eddie Bauer which i just bought a new alternator for because i had thought the voltage regulator in the old one had gone bad and wasn't charging the battery. After putting in the new alternator the car ran fine for a few days, today i was driving home and all of a sudden my...
  30. N

    Volt gauge fluctuating, flickering lights

    I just want to say thanks in advance for any advice or help you guys can share . I've gotten a lot of great info from this site. But the issues I'm having are confusing the hell out of me. I'm new to trying to fix my truck so I don't know tons about how everything works but I'm learning...
  31. C

    2005 Alternator Mystery at Exciter Wire

    The problem: At operating temp. exciter wire will not start charging alternator when starting vehicle The facts: Alternator works fine at cold start. When ALT is functioning it puts out a normal 14.3 volts, Battery and ALT are...
  32. D

    2001 Ford Explorer XLT Alternator replacement

    So idk to much about vehicles and their mechanics but i bought a Powermaster Alternator - Alternator - Ford 3G - Large Frame Transverse Mounting - 200 Amp - 130 Idle - 6 Groove Pulley - OE Only - Natural for my 2001 Ford Explorer XLT 4.0L SOHC. I bought it from partsgeek.com because it was cheap...
  33. J

    98 Sport 4wd battery discharging, codes, etc...

    I inherited this Explorer from my late father. The check engine light was on all the time, I asked him about it to which he said "it's nothing, runs fine, don't worry about it". He drove it for years that way. When I started driving it the check engine light made me crazy so I started looking...
  34. R

    2009 Battery Light, Check Engine, throwing 10+ codes mostly wrong

    My son was driving, battery and check engine lights all came on, lost power. He limped it to my mechanic who replaced the alternator. Then runs fine for a short time then same thing happens. He checks all the codes, the system are all ok. Resets, then drives fine, for a bit, then starts all...
  35. J

    Speedometer is crazy

    Alright so my 1992 explorer isn't super moded but it is running a little bit bigger tires 30x9.5 so I thought I'd put it here. But on my way to school I hit a bad pot hole at about 60mph or so and for a split second the rear abs light came on it kicked the radio out for a sec and now my...
  36. M

    Quit running and won't start

    Hi Guys... Wife was driving the 2001 Sport Trac and it started to lose power, then stopped running. I checked it out and when I try and start it, it produces a rythmic clicking sound. Checked the battery and terminals and it appears the car is getting sufficient power... never did this before...
  37. P

    Need serious help with battery

    So I have a 2000 explorer. The 4 liter v6. And recently the alternator/battery duo has been a train wreck. About a month ago I replaced the alternator because the old one finally died. As soon as I put it in that's when the problems started. When I get into 2000+ rpm range the volt gauge shoots...
  38. P

    charging system fiasco

    This truck is driving me out of my mind. Ive got a new alternator new battery, fusible links are good fuses are good, replaced terminals, im getting no charge and my battery light is on. Ive tested EVERYTHING. When i put the new battery in it was running at 14 or so volts, checked at alt yellow...
  39. C

    1991 Explorer XLT Voltage Ripple, Oscillation at speed or idle

    Hi everybody; thank you for taking time to read this. My family is the original owner of said loved Explorer (1991 XLT, 4.0L RWD), 320,000 miles strong, but nobody can seem to pinpoint the cause of a very annoying oscillation. Very familiar behavior for old cars, I remember seeing old Accords...
  40. K

    Alternator smoking

    I just picked up a 2002 explorer XLT, and have been fixing some of the issues it has such as the 4x4 (needed a shift module), a couple windows, blend door, today I decided to charge the air conditioning system with Freon. The compressor finally decided to kick on and I was getting cold air...
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