Ford 7.3L Power Stroke (1999-2003) :: Dashboard Warning Light For Alternator / Battery Occasionally Light Up While Driving
The past few weeks the dashboard warning light for my alternator/battery will occasionally light up while driving down the road. Whenever it does, my plug in voltage meter shows a healthy 14.x reading. It usually goes out after a few seconds, but will stay lit up for as much as thirty seconds. So other than voltage being too high or too low, what else will cause the dash trouble light to illuminate?
View 14 RepliesFord F-150 - 1997-2003 :: Battery Light Won't Go Off Even After Replacing Alternator
I have a 1998 f150. Was driving down the road the other night and the truck loses all power. I have replaced the alternator and the battery loght stayed on. So, I took both old and new altrrnator to parts store and had them both tested and they bith passed. Is this a commomn issue?
View 7 RepliesFord F-150 - 1997-2003 :: Battery Light On - Alternator Or Regulator?
The other day the battery light came on. Of course the useless "gauge" still reads normal but that is another rant.
Checked voltages today:
Battery reads 12.0 volts key off, 11.83 key on, engine off, 11.65 engine running.
Obviously discharging and I am guessing it is the alternator. Do these trucks have an external regulator that may have failed or is it in the alternator? I'd hate to spend $150-200 for an alternator only to find out it doesn't solve the problem.
Ford F-150 - 1997-2003 :: 1998 - Battery Light Only Off Over 2400 Rpm - Humming Noise Form Background - Alternator?
Vehicle is 1998 F150 with 194k. The battery is 1 1/2 yrs old and belts and alternator are original.
Yesterday morning my VHF and dog tracking eqipment started humming with the truck running. The hum on the tracking eqpt. only happened when I pointed the antennae over the direction of the hood with truck running. When I shut truck off everything is normal. Later in the day the battery light came on. The battery light would go off if I kept it over 2400 rpm's. The charge on the dash was normal but as I got closr to home last night it dropped to almost nothing and the lights were very dim.
I am thinking alternator. What I am confused about is the humming noise in the background. The tracking eqpt. is completely separate from the truck while the VHF is direct to the battery with an iline fuse. Bad voltage regulator?
Ford F-150 - 1997-2003 :: 2001 4WD - ABS Warning Light Comes On
2001 F150; 4WD; 5.4L; 198,000 miles
The abs warning light comes on. In to the shop which determines it is the RF abs sensor. They say the "abs electronics are integral with the entire hub so the entire hub needs to be replaced".
Ford F-150 - 1997-2003 :: Alternator Went Out / Battery Dying
My alternator went out last week. I installed a new alternator, battery and serpentine belt. However, the battery is still dying. So far I checked the continuity on the fusible link and it appears to be good. I also checked fuse number 11 which provides power to the voltage regulator. The fuse is not blown. The voltage at the battery while it is running is less than 12 volts and it drops the longer it runs. I also have codes b1318, b1932, c 1226, and c1284.
View 8 RepliesFord F-150 - 1997-2003 :: 1986 - Only Jump Start - Alternator?
A co worker gave me an 1986 F-150 5.0 302 with 225,000 miles that he had sitting for 1 year in driveway. He never put the new alternator in that he bought. I towed it to my house and put the alt. in jumped the battery and it started but idle was horrible. turned the idle screw to get bad gas burned off.
Whenever I shut it off or it died from idle I would have to jump it. So, I put new 56-3 battery new relay and it started right up. Drove it down the road to test drive, the truck would want to fowl out whenever I stepped on gas peddle hard. I put Sea Foam and Lucas in the tank and 20.00 premium on top. but now the truck will not turn over since it was shut off unless i jump it but needs jumping all the time. thought it was the starter so, replaced that and still tick, tick, tick, tick when trying to start won't turn over. Its going to start to make me drink, what I can replace now or have checked? maybe its the Alternator he gave me with the truck?
Ford F-150 - 1997-2003 :: Alternator Or AC Compressor Growling Noise?
I drive a '99 F150 4x4 5.4 EFI 196,000 miles. Recently I started noticing a growling noise that followed engine speed. I immediately thought alternator going out. So I pulled the belt off and it spins free and doesn't feel rough at all.
So I started it up and realized the noise got a lot louder when the ac clutch cycled. Now I'm thinking ac compressor. A short trip to my mechanic who didn't even really look at it very long and he said the compressor is about ready to seize up. I thought I might just put on an ac bypass pulley to get by for a while. Not really a sound decision in the middle of July, I'm thinking, but I'm poor and it beats having the compressor lock up, right?
Today, when I get off work and pop the hood with the ac off and the clutch not engaged the noise is worse than ever. I put a stethoscope (long screwdriver, I told you I was poor) on the alternator and it is making all of the noise. Turned the ac on again and it was really making noise now. So I applied the stetho-driver to the ac compressor and it is quiet as can be.
I am cautiously optimistic that the alternator is the sole culprit and that it only gets louder when the ac cycles because of the extra drag on the belt.
Does that seem like a logical explanation? Should I just try the alternator? I really don't want to destroy a perfectly functioning ac system only to find out that it was OK to begin with and I don't want to buy a $150 alternator for no reason either.
Ford F-150 - 1997-2003 :: 1999 - Random Misfire While Driving On The Bad Alternator
I have a 99 F150 4x4 with 5.4 Triton, 99xxx miles. I was towing my boat when the regulator in my alternator went bad. I drove the truck with the voltage being sporadic for about 10 miles until I could get to a parts store. While driving on the bad alternator, I started noticing a misfire. I replaced the alternator, battery and DPFE. I still have the misfire....but here is the kicker. The misfire only happens when the truck reaches operating temperature. Which, in my limited knowledge, eliminates a fouled plug, COP, bad injector and a vacuum leak. I've got no check engine light so I can't pull a code. The only thing I can think of is to clean the EGR?
View 10 RepliesFord F-150 - 1997-2003 :: 2000 - Replaced Alternator Now Cannot Get Belt Back On?
I have a 2000 V6 F150 and replaced my alternator in about five minutes and now have been trying to re-install the serpentine belt for about 6 hours. How do you grab the tensioner pulley?
Also I selected the 130 amp new manufactured alternator at Advanced. Auto thinking the 130 amp might be somewhat of an upgrade to my original Motorcraft Alt and after several hours I also discovered them. pulley on the new alternator is about a quarter inch larger in diameter than the original alternator. I wonder if I should compensate for a half inch longer belt or try to get the same one on.
In any case I cannot find a way to grab and move the belt tensioner to allow me to reinstall the belt around the alternator. Are there any pictures anywhere on how to move the tensioner to create slack when reinstalling the belt?
Ford F-150 - 1997-2003 :: 1999 - After New Alternator When Headlights Turn On Truck Shuts Off?
I bought a 99 f350, that already had HID's in it, i found out i was running the wrong batters (weren't 800 cold crank) I just had to replace the alternator. Ever since the new alternator when i turn on my headlights my truck shuts off. IT fried my IDM and i just put a new IDM and 2 new batteries in it today. Thinking i had fixed the problem i drove around no issues, finally i was leaving someones house and turned on my lights, and truck shuts off!!! It restarts but now im trowing a code!!!! im guessing the HIDs are wired wrong and that's why its shutting down the truck but OEM IDM from ford is 1300$!!!!! brand new one installed today,
View 5 RepliesFord F-150 - 1997-2003 :: 2001 F350 - Air Intake Removal - Alternator Starts Up To 12?
I have a 2001 f350 7.3 diesel, I am looking at switching out the air intake? Also, I have an issue with the code for a dual upper and lower generator fault.. I checked and only have one generator not a dual system.. The alternator is running strong at 14.1.. But I have noticed when I start it up it is down to 12..
View 1 RepliesFord F-150 - 1997-2003 :: Alternator Changed - All Lights Flicker / Go Dim Then Come Back On Bright Again
I put a re manufactured alternator in my 2000 f150 with the 5.4 liter. Now all the lights flicker, go dim and then come back on bright again. I noticed when the lights dim, the heater fan speed also drops. The light flickering is constant and bad enough, that I can notice it in daylight also with the headlights on. It is really noticeable at night with the truck in drive (or any gear for that matter) sitting at a stop sign or sitting still in my driveway. I changed out the old alternator because it was making a loud chattering noise. I didn't have any trouble with the lights or fan with the old alternator. Why doesn't the battery volt gauge in my instrument cluster fluctuate all the time while it is doing this? It reads in the normal range all the time and doesn't move. The flickering lights are also noticeable at highway speeds, its just not as bad.
View 2 RepliesFord Super Duty (1999-2016) :: Alternator Light Flickering Then Stayed On / Ticking At Idle
So my truck drove great to ocean city MD this weekend. Power is perfect again, feels really tight. But now I have having to additional problems.
1) My alt light had been flickering a couples times a month. Last night it came on and stayed on. Lots of threads about this I Know!
I am hoping that cleaning and tightening the connections will do the trick since the alt is a Bosch with only 25k miles or so. But I want to order a rebuild kit:
is my alt a 3G or a 3G8429?
F SERIES | Alternator Starter Rebuild Kits
2) I started to have a ticking at idle. Its very regular and sounds like its coming from the passenger side valve cover. In random threads I have read about timing chain guides breaking and loose rocker arms.
Most of the time its 3 ticks in a row and then a pause. Should I be pulling the valve cover? Think I need to R&R the timing chain? I will post a video later!
Ford F-150 - 1997-2003 :: 2000 V8 Running Rough At Idle And Check Engine Light On
I started out with my 2000 F150 with a 5.4 V8 running rough at idle. It would idle way down slow and then rev up a little over and over. On a couple of occasions it would even die when in drive or reverse. I did finally get a Check Engine light so i put it on my diagnostic program to see what was up. Here is what I got:
P1151 Lack of HO2S21 Indicates Lean
P0171 System Too Lean Bank 1
p0174 System Too Lean Bank 2
After doing some reading up I checked all my vacuum hoses and cleaned my mass air flow sensor. I then got the same codes again after a few minutes of running. So I went to the next thing that was recommended, the upstream bank 2 O2 sensor. After changing it the truck ran fine for a couple of days, no issues. Then all of the sudden it idled a little funny again and I got a Check Engine Light again. This time:
P0171 Bank 1 Lean
P0174 Bank 2 Lean
P0300 Random/Multiple Misfire
I reset the light to see if I would get the same again later. Before the light came on again I filled my truck up with gas and it seemed to be running pretty good again. Then a day or so later it set the light again. This time:
P0171 Bank 1 Lean
P0174 Bank 2 Lean
P0136 O2 Circuit Malfunction Bank 1 Sensor 2
P0156 O2 Circuit Malfunction Bank 2 Sensor 2
P1131 Lack of Switches HO2S11 Lean
P1151 Lack of Switches HO2S21 Lean
I went ahead and drove for a few days as it had gotten really cold here and I didn't feel like messing around in my shop since it isn't heated. A couple days ago I needed gas so i filled up again. Suddenly the problem was gone again. Truck ran fine idled fine no missing or odd idling at all. That lasted a day or two before it started acting a little weird again. At that point i was down about 1/8 of a tank from full. I have read that there can be issues with the fuel pump.. I am kind of wondering if that may be it now. But I haven't had to deal with this sort of issue before so I am unsure what to check next. The truck always runs fine off idle, it only seems to have the issue when it is idling. I had reset the codes the last time and i have the light on again now. I haven't checked it yet but I am sure it is going be some combination of what i have had in the past.
I have read that the IAC valve can be an issue as well. I had a problem with mine sticking a couple years ago and when it would do it you could just tap it with a wrench and it would idle up. But it never died like it does now and it would also idle a lot slower than it does. Back then I cleaned the valve and had no more issues with it. The truck has always had times when it would act weird at idle usually after slowing down after being at highway speed. The current issue happens at all temps cold or hot.
Ford F-150 - 1997-2003 :: 1999 - Service Engine Soon Light On Sometimes At High Rpm Or Rough Erratic Idle
My trucks symptoms include a illuminated service engine soon light, sometimes a high rpm idle, and sometimes a rough erratic idle. When a scan was done it indicated the oxygen sensor was defective. The issue is: which specific one (there are multiple oxygen sensors) or how could I check or determine the faulty one for sure. I am trying to economize and replace only the bad one myself if possible. I own a good multimeter, can it determine the bad one? 1999 F-150 4.2 Litre V6 oxygen sensor dillemna....
View 7 RepliesFord F-150 - 1997-2003 :: Instrument Cluster Gauge Lights Not Showing And Alternator Is Not Consistently Charging
I have a 1997 Ford Expedition, 5.4. My research indicates that fuses 2. 19. 29 are associated with the instrument cluster (IC), could you identify their specific function in relation to the IC? My IC gauge lights are not showing and my alternator is not consistently charging. The blinkers, battery, oil, brake, and ABS indicator lights are showing in start. Regarding the alternator, my research indicates that a failing alt light on the IC may cause the no charging condition? As a note, I have a brand new battery, brand new alternator, brand new 3 pin wiring harness. Also, when the alternator is not charging and I connect the a jumper from the exciter wire directly to the pos battery terminal, the charging starts.
View 9 RepliesFord 6.0L Power Stroke Diesel :: Alternator Warning Light And Lose Power Steering Soon After Brakes Got Stiff
I just wanted to share with you all a cautionary tale about belt tensioners and idler pulleys. I am now a firm believer in installing the aforementioned items when you replace your drive belt. 15000 miles ago I replaced the drive belt and didn't heed the warning of some here on the forum.
For the last month or two I have noticed what sounded like road noise which I dismissed because I had just had new tires installed that had a more aggressive tread pattern than my previous tires, I also noted that the ECT had been a bit higher than normal, like running in the high 190's to low 200's on average.
Well while driving today I get the alternator warning light and lose power steering and soon after the brakes got stiff, this was followed by ever increasing ECT which got to 242* before I could get it off the road and shut down. It is too early to tell if the noises and the ECT temp rise were the result of this tensioner going out...
For what its worth the only tools required were a 10MM end wrench and a bit of skin to get the job done.
Ford 7.3L Power Stroke (1999-2003) :: Battery Light On Intermittently After Replacing Alternator?
Alternator locked up in a parking lot. Replaced it and had to replace pigtail due to a loose wire in the harness. Now battery light comes on intermittently. New alternator is doing fine producing anywhere from 13.9v to. 14.4v. No output voltage correlation to battery light at all. The belt is still in great shape so I don't suspect slipping. Fortunately I caught the old one locking up almost immediately and had recently replaced the belt. Output voltage looks great. Are there any fuses for alternator?
Only thing I can think of that I did...when splicing in the pigtail that connects to the alternator, I briefly grounded whatever wire in the pigtail is hot. Was just a split second, but enough to see a spark and maybe enough to blow a fuse? I've seen people reference an "under hood" fuse box, but I don't seem to have one. My truck is a 2002 CC with just over 100k on the clock.