Alternator Not Charging Battery But Alternator Is Good
If the alternator does not work properly, the battery by itself cannot power the vehicle too long. This morning NO CHARGING. The alternator diode / regulator failure is a very common occurence. Thinking of just goimng and buying another alternator. I don't know why the Suzuki Grand Vitara is 105 amps, but I would guess they are following the trend in automotive for higher amp alternators. Changed the tiiming belt and serpentine belt. After replacing and still experiencing the same problem I took the reman alternator to autozone and it tested good. The light comes on when the alternator is not charging the battery. If the alternator is dead or weak and not effectively charging the battery, the car will eventually stall. The alternator is still not charging the battery. Page 2 of 2 < Prev 1 2. A bad battery will NOT accept or hold a charge, while a good battery can be recharged and returned to service. If you are reading 12 volts or lower, the alternator is not charging. If it is staying on, therei s either a bad connection or the alternator is not charging. The charge indicator bulb goes out when charging system voltage exceeds battery voltage. Got a Bad Alternator? It may have damaged your battery. A battery to battery charger takes the voltage and amperage that is being put out by the vehicle alternator and regulates it down to a preset and constant amount. So they order me another one. If the alternator is good there are a few possibilities: 1. an alternator can be good but you can still have charging problems if:- 1. 2008 Toyota Rav4 2x4 2. I had to replace a battery over the summer and ever since my electrical system seems to not be up to par. RE: Why is my alternator is not charging my car battery? My truck is a 1980 k5 blazer. 6 volts on the alternator output wire clearly shows that the alternator is not charging. It is a new alternator that tests "good" at autozone and o'reilleys. Put it back in, made sure everything is conected, turned on the headlights. I am at a loss, the original alternator tested bad at advance auto parts. Vehicle charging systems are not designed to recharge fully discharged batteries and doing so may cause overheating and damage the stator or diodes of that alternator. and both alternators are good. If you are ready to choose a new stanley battery charger alternator check, check out our recommendations for the best stanley battery charger alternator check. Changed alternator, still not charging. Thinking of just goimng and buying another alternator. internal regulator. It's purpose is for the vehicle to run once it's been started. 4 When remove pos term on Battery TRuck quits. After checking all connections to alternator and battery and found them to be fine I concluded it must be a faulty alternator. We tested the new battery (meter test and cell test) which tested like a new battery should. had al wires tested n they r getting voltage. ) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help. Battery is no good. If you've had a battery tender on while parked your alternator will likely not be calling for charge since there is no need, so the voltage might not be at peak and the gauge won't show a high rate of charge on start up. The dealership has already replaced 3 parts - the alternator, PCM and fusebox and now they seem to have no clue on the real cause of the issue. We should now have the engine running, so it is time to get the battery charging. Attach the output to a battery, and apply voltage to the field terminal and spin it. I get the typical battery not charging, service charging system message. Once we got the circuit board replaced, we realized that the alternator is not charging the battery. Was told that it was a voltage regulator problem that is controled by the car's computer. (The actual voltage on number 1 terminal isn't critical as long as it enough to get the alternator to start to charge and it need to be less than battery voltage to ensure that there is no charging voltage going through the circuit when the alternator is working. Fact: Alternators are not designed to charge dead batteries Jumper cables can be a lifesaver, literally! However, when you use jumper cables to start your vehicle, you are placing a tremendous strain on your vehicle's alternator and battery. Use caution, however, as a dying battery can only receive a charge for so long and may go completely dead at a later point despite the best efforts of the alternator. 8 VDC range, there is a problem in the charging system somewhere. If your alternator is not charging your battery and battery and all connections are good, chances are the alternators built in voltage regulator is faulty. I checked with my DIMM and the voltage is good and alternator was charging but I haven't done a proper load test on it. When parked, Green is good, anything else, charge that battery when storing your bike! PLEASE NOTE THE UNIT IS FOR NEGATIVE EARTH SYSTEMS ONLY! (vehicles made in the last 40+ years are negative earth, if you have an older vehicle check that your battery negative is connected to chassis). Battery not charging, alternator tests ok I dropped my alternator off at a shop for a rebuild, it took 6 weeks for me to get the all clear on it, so what do I look at next to figure out why the charging doesn't work. You MUST have a voltage regulator somewhere in that circuit or your alternator will not charge. Measure with the meter black lead on a good ground or the negative battery cable and the red lead on the large stud. - Nick at Pelican Parts. If you were to connect a separate battery bank to your vehicle battery you would be able to charge them off the alternator as well. If you can get the car to a mechanic, have him or her test the battery and charging system with a special tester. Unless one has a very basic boat where the charging system is only used to charge an engine battery for the next start a dynamo is not really up to the job. The alternator failed. What cold weather alternator problems should you be on the lookout for this winter? Current Events. If this is the case, it only means that the alternator is not charging, but does not reveal why. I get the typical battery not charging, service charging system message. The alternator puts out the charge, the battery receives it. 02 volts, the battery cables are good. Good battery, good alternator, but not charging! On may way to work, I noticed my battery light was on, the clock wasn't working, window rolled up & down very slow. I replaced the battery with a new one that night. If the meter fuse is blown the charge warning lamp can illuminate giving a false indication the alternator is not charging. If one of those two parts fails, it’s not uncommon to have to replace them both. 5 years old. When I rev the truck up, the charge does not go up, it sits steady. Charged the battery and cleaned/inspected the leads and re-installed the battery. 15 volts per cell will charge a lead acid battery, this is the voltage of the basic chemistry. so I figured the voltage regulator in the alternator had went bad and bought another alternator to replace it only to find out that now its not charging at all. He is just getting 12V (Battery voltage only) checked at the alternator. So I then brought the alternator and battery to oreillys and they both tested good. 2008 Toyota Rav4 2x4 2. The guy at the shop said my old alternator was indeed bad (rectifier). Recheck installation, cables and wiring, and have them test the alternator. If you don't want to replace the battery, radio and amp in the near future take the car to a good shop, let them diagnose what's wrong and spend the money to fix it. This didn't fix the battery light from coming on. Appearently the voltage regulator isnt kicking on or im not getting connection or something. This is the same connector that lets the on-board computer know if the alternator is charging or not, which is what the battery light actually means. 04 volts at the batteries with the engine running but my battery light is on. By the way, that 1500 Watts is only about 2 HP. My alternator is not charging, wires run direct to alternator from battery ,test big lead for a permanant 12v supplyon the back of the alternator if you have one then the problem is either the brushes worn out or the commutator worn through. I had the alternator checked off the engine and on the engine and it tests good. 2 at the battery, and at the post on the back of the alternator, so the connection is good between the battery and alternator. The battery/alternator are just working fine, but still the check charging system stubbornly comes on and stays until the car engine is restarted. the battery charge light on the dash is required to be a working bulb before the alternator can operate. Most of the time, these tests are highly accurate. battery terminal-. Buy AUTDER Car Battery Tester 12V 6 LED Lights Digital Alternator Tester, Test Battery Condition & Alternator Charging Tester for Car Motorcycle: Battery Testers - Amazon. I put a THIRD alternator on it thinking that the first replacement alternator was no good, still the same thing. I am going crazy. 5V? Not real clear from your other posts, I think I interpret you did indeed check that. This tester will be able to tell you if your battery is not holding a charge or if your alternator is the issue. If you are still experiencing charging system issues, then the battery is suspect. I went ahead and replaced the alternator, started the truck, and no charge. In that instance, the alternator will send the excess charge to the house batteries. I get the typical battery not charging, service charging system message. The alternator can drain a battery over time and shorten its lifespan, and you don't want to unnecessarily run through batteries on account of a bad alternator. This case is the clear case of alternator not charging the battery but the alternator is good. If the alternator is good, it must be the regulator. We didn't have any issues with it before hand. Charging a dead battery with an alternator will result in premature alternator failure. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc. I also remember reading on the net a while back that in order to get a good charge on the batts. It's purpose is for the vehicle to run once it's been started. If it's still sending out a strong charge, the battery is likely not the problem. When the alternator fully re-charges your vehicle battery, it will stop charging your batteries but continue to run the vehicle. I had problems with the battery dying and not being able to start the truck in November of 2014. 5 years old. 4 and drop to 12 with ac on. With the vehicle running , I usually check across the battery, the voltage should read as stated above. I suspect one of 2 things: Field wire, we weren't picking up voltage on the field wire. sounds likely that could be the problem, alternator can't be functioning properly in the vehicle with the voltages you said you were seeing and that you drove home on battery means your battery has to be good be weary of auto parts store battery/alternator tests, I haven't seen one use a real load to check one in a long time, I'm not sure how. I have doubts about the alternator as the battery light is not on before engine start or after. If this sensor tells the PCM that the battery is too hot, the PCM might refuse to power the field coil 'cause it thinks bad things might happen if the. The E53 is not like the later E70 that needs a setting in the ECU to be reset when the battery is changed so that shouldn't be an issue. Good Alternator Won't Charge - Please help I have a 1990 Notchback 5. When diagnosing battery trouble, you must check the alternator to see if it is charging correctly. Good battery, good alternator, but not charging! On may way to work, I noticed my battery light was on, the clock wasn't working, window rolled up & down very slow. 4 and drop to 12 with ac on. Not sure about your rig, but my coach batteries don't get charged from the engine alternator. 10 then the regulator is not properly grounded. Put battery back in and took it for testing, their test said the voltage regulator was bad, so bought a new alternator, installed it, same thing, not charging. This starts the engine running, which puts the alternator into action. Since the alternator regulates how much electric current gets fed back to the battery during recharging, the battery may have overheated due to overcharging. somebody pleaseeee help me i cant afford to take in to a shop. This diagnostic will help you sort out any charging issues you may have. The portable charger can re-charge a car battery in a few minutes. I find it hard to believe that while the vehicle was sitting for 2 weeks that the alternator went out. Charged the battery and cleaned/inspected the leads and re-installed the battery. Continuity is good between positive terminal and alternator B terminal and battery isn't being charged; BUT if I take off the charge cable from the B terminal it's getting 14V, put it back on it's back down to 12. If the alternator is not working right, the battery slowly drains down. The alternator and the car's battery work hand in hand. Alternator stops charging. another thing i noticed is my battery light on the dash is not working at all; i did some research and people were saying that the alternator wont wont get signal to charge unless that light works, so i came across the bulb check relay- and well it seems to be working as well and i also tested the wires and also got the 11. Test the wiring before you replace the alternator! Some vehicles have a fuse which can blow and keep the alternator from charging. 1st, here in the northeast in below freezing temperatures, I could not start my car. The alternator is the part of your car responsible for maintaining the battery's charge. If it holds the charge through testing, you may have an issue with the alternator. Ok got the alternator mounted on the g16b vit engine, can anyone tell me the plug on the vitara loom has a white with red stripe and black with white stripe which wire goes to where on the falcon 2 pin connector also the charge wire from the vitara alternator goes from it into the loom and back to the battery when it goes into the loom does it go anywhere else or not and in the fusebox is it. Thinking of just goimng and buying another alternator. You could confirm before and after replacing your alternator that it is in fact charging, by measuring voltage across battery posts while idling. SOURCE: dodge neon 2002. 1 volts x 6 cells = 12. had al wires tested n they r getting voltage. I am working on a 1992 400sel, the battery light is on while running, I have checked for charging at the battery and the alternator, both only show battery voltage. Sometimes the ground connection may not be all that good or it may get worse over time. 75 volts is not enough to charge a battery. yesterday i added a 0 gauge wire with a fuse from the bat terminal on the alternator going str8 to the positive terminal on the batteryshouldnt it still charge the battery since electricity takes the path of least resistance anyway and ive got it going str8 to the positve terminal on the battery?. I went ahead and replaced the alternator, started the truck, and no charge. NOt sure if he did anything with regulator. 2) It acts as a capacitor to both draw and smooth the rectified power (current) from the stator of the alternator. Alternator is good and the battery is good but there's something not letting it charge I've had both check and check them myself check all the fuses no wires but yet it will shut off about a mile d. Good luck, those alternators are a pain to get in and out. 2 at the battery, and at the post on the back of the alternator, so the connection is good between the battery and alternator. Once we got the circuit board replaced, we realized that the alternator is not charging the battery. alternator is fine. I reinstalled them and still same problem. I have a 2007 dodge charger. Average repair cost is $120 at 130,350 miles. The alternator also showed that it was charging the battery. With the vehicle running , I usually check across the battery, the voltage should read as stated above. If your alternator is not charging your battery and battery and all connections are good, chances are the alternators built in voltage regulator is faulty. In these systems, the battery charging wire only charges the battery; it does not operate the electrical system. Battery / generator light on, alternator not charging, battery holds charge I was driving home Sunday when I realized my battery light was on. If you were to connect a separate battery bank to your vehicle battery you would be able to charge them off the alternator as well. Anyways, I got a new alternator from Advance and the repair shop put in a new battery to go with it, but when testing they found that there is no charge going to the battery from the alternator? What? They just got done checking all of the ground wiring from the alternator to the starter and from the starter to the battery and it was clean. 5) Volts with the headlights on or off and/or with everything on (so if the the test above gave you steady, and I emphasize steady,13 and up to 14. 1st, here in the northeast in below freezing temperatures, I could not start my car. If there is no voltage on the (F)ield wire the alternator will not start charging. Also when the revs go past 2 rpms the battery light comes on. 6 volts -installed back into car not putting out voltage - checked the voltages with multimeter still no good - replaced the plug going to the alternator b/c it was brittle & falling apart- still not getting a charge - battery in good shape. I have always been told if the truck dies with no batt, it’s the alternatorbut I wanted to verify anything else I can check before taking the alt down to the parts house. In some cases when a battery is too weak or damaged, it may no longer hold a charge for any length of time, in which case the alternator may be doing its job, but the battery is just simply. Test the wiring before you replace the alternator! Some vehicles have a fuse which can blow and keep the alternator from charging. If the lead voltage goes low for some reason the light will turn on and the alternator will not be able to generate any power to charge the battery. The downfall of most solar systems is that when the sun is not shining or power use is high some sort of back up charging method is required. For example: if you start your vehicle, the LED will illuminate if your alternator is charging. and both alternators are good. Who checked it for you? because 12 volts is too low while the engine running and will not charge the battery. Alternator not charging battery 40 Answers. Have you got a "resistive" power wire from the ignition switch to the Regulator (either the "I" or "S" terminal depending on how you have it wired)? It sounds like the regulator is not turning on to start the alternator charging. I have a 1998 lincoln town car and it is not charging when running. I have 12V at the 12th pin in the diagnostic connector. If the alternator does not work properly, the battery by itself cannot power the vehicle too long. The alternator is not capable of producing enough power to do this. I suspect one of 2 things: Field wire, we weren't picking up voltage on the field wire. If you have a voltmeter built into your sonar and you see a voltage increase after starting the motor the charging system is likely OK. Make sure the clamps are on tight. Just get a good new battery. The lower the temperature the higher the charging voltage, and vice versa. Put battery back in and took it for testing, their test said the voltage regulator was bad, so bought a new alternator, installed it, same thing, not charging. 7L Not charging new batt/alternator HELP × Help us help you. But if the battery reads over 15 volts or less than 13 volts, then there might be a problem with the voltage regulator, the wiring or the alternator. The alternator is not charging. Reporting: Alternator not charging battery This post has been flagged and will be reviewed by our staff. The alternator tested good but the battery keeps dying? Test the battery, if it checks out ok, then there is something else draining the battery. The charge indicator bulb goes out when charging system voltage exceeds battery voltage. Even on an internally regulated alternator there can be faults in the wiring and circuits leading to the alternator which can make it not charge. I go back to NAPA and have them test the new alternator, they tell me it is not charging the system. 3v when grounded to itself, the body, and the engine (grounds are good). PLEASE NOTE: *** If you are using a Power Factor Corrected battery charger, the rest of this article does not pertain to you. 2 new aLternators. I should have included in my OP that the battery is a year old and tested good, and I even replaced it with another known good battery to be sure, and it still isn't charging. battery tested good. Replaced alternator with Carquest 14105A and everything went on easy but it isn't charging. 04 volts at the batteries with the engine running but my battery light is on. To do this we need to connect the alternator. A dead battery is the end result of an alternator not charging enough. Let's see, when I start the truck there is a series of beeps that sound off each time. Put cables on it, jump started it and it was reading 12. You need to charge the battery, put a volt meter on it before you start anything. If the voltage at the battery and alternator don't match. 1994 ls400 alternator not charging - removed the alternator & took it to a local shop that rebuilds starters & alternators - guy says it's putting out 14. somebody pleaseeee help me i cant afford to take in to a shop. Good luck, those alternators are a pain to get in and out. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc. I put it on and still get 11's sometimes but they told me it tested as good. Because an alternator that IS charging the battery will produce 13 (up to 14. And the alternator does charge the battery if it is low on charge. 8 volts while the engine is running, this will drop down when the engine is stopped. As a result, the level of charge of the battery has dropped considerably that it is no longer capable of starting the car. 1999 to 2016 Super Duty - Battery light on, but alternator is charging??? - OK I have 14. If it is not, check the battery fluid level ( if possible) and charge the battery now. The battery puts out 12 volts, but under normal use, it cannot maintain enough energy to keep the mower operating. Battery tested good keeps a charge when on charger. 2008 Toyota Rav4 2x4 2. I get the typical battery not charging, service charging system message. alternator is fine. 5V? Not real clear from your other posts, I think I interpret you did indeed check that. Is there a external fuse that might control the function of the voltage regulator or do I have to have the computer worked on to solve the problem. I took it for about a 30 minute round trip ride at highway speeds hoping the alternator would charge the battery but the light never went off. 04 volts less than the reading recorded at the battery. If the battery is good, and all of the above tests are positive, then your charging system is functioning properly. Same goes for the battery. IF nothing is on AND the rpm's are above 1500 then the battery recieves 13+ volts, but not at idle and not if anything is turned on (AC, Radio, Etc). In that instance, the alternator will send the excess charge to the house batteries. Sister's car still has our alternator on it and is running fine. 4 volts (14. Otherwise you need to replace the whole alternator. You could confirm before and after replacing your alternator that it is in fact charging, by measuring voltage across battery posts while idling. Alternator Is Good But Not Charging The Battery Reviews 2019 What is Battery Reconditioning. So your amplifiers are going to have to get the power from the vehicle's battery as well as the alternator. 7L Not charging new batt/alternator HELP × Help us help you. Check to make sure the wire is not broken. Ran for about 30-45 minutes till dying. The battery is the heart of the system that produces voltage and provides storage for electrical current. Went to two different places to get it tested and both said it was good. When test between the alternator and the battery only showing 12. If it is not, check the battery fluid level ( if possible) and charge the battery now. Having both battery banks charged by the alternator gives you welcome redundancy and sure beats having to run the generator to charge batteries while driving if you have heavy 12 VDC loads on your house batteries-- like running the furnace(s) while driving. Putting them within the refrigerator will extend their shelf live a little a lot of but not much. Then , turn your meter to AC volts. and the above conditions are not met, the alternator must be replaced. They told me the battery tested good also. Each battery reads 12. the car got about 10 miles and as we got further is acted like the alternator just was not charging the battery. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc. I have a 2008 Patriot 2. Multimeter Used in Video: http. Excited to make my first post on this site! I do believe my Alternator is done or at least really dirty and not working. The light at this point was. Alternator is good, battery is good, but not charging. 2 new aLternators. Need to charge up your battery first then do a load test on it to verify it's condition is still good and will accept a charge. Re: Alternator and battery good, but no charge from alternator. Hi everyone. Buy AUTDER Car Battery Tester 12V 6 LED Lights Digital Alternator Tester, Test Battery Condition & Alternator Charging Tester for Car Motorcycle: Battery Testers - Amazon. Another possibility is a bad Battery Temperature Sensor. The alternator is not providing power to the battery according to my volt meter. But the best way to determine if the problem is a dead alternator or dead battery is simply to test the battery with a voltmeter, which you can get at most auto stores. I don't have the money to send it to a shop and have them poke aroundI've been using my roommate's car who is in Iraq. In start stop traffic the battery was dropping and the revs wouldn't go below 1000 Turned off heater, radio and lights hoping this would help the battery level as it was dropping quite fast. I'm trying to diagnose a problem with a 2004 Forester that my daughter has in Ann Arbor. you have confirmed that the alternator is not charging the battery for sure. Alternator not charging battery 40 Answers. The alternator is still not charging the battery. The exact charging voltage will vary according to the battery's state of charge, the load on the vehicle's electrical system, and temperature. The most common reason for an alternator not charging a battery is because of a bad alternator or battery. If I leave the car running I can hear it slowly begin to die due to lack of battery voltage. If the alternator is not working right, the battery slowly drains down. When I start the truck, the batteries put out 12. The sequence for checking the charging system is straightforward and fairly easy. Electronics - Alternator is good, but itsn't charging the battery. Even though the alternator is in its best form yet it is not charging the car’s battery at all. The battery in your Jeep is a storage vessel for power, while the alternator creates DC voltage to charge the battery and power the vehicle when it is running. Step 3 - Check the alternator and voltage regulator. Typically, if your alternator is no good, it's going to throw a "CHARGE" light on the dash, or show you that you're not running at 14. I want to charge the batteries with an external battery charger. Hi everyone. This tester will be able to tell you if your battery is not holding a charge or if your alternator is the issue. Acura TSX: Why is My Battery Not Charging? If your charging system is not up to the task, you may have a hard time getting to your destination, if you can get your car started at all. Fan belt slack or worn. Battery light isn't coming on in the cluster, it checks out okay, same as the rest of the cluster. Before I get into that some smaller issues that are going on I will share in case they could be related. an alternator can be good but you can still have charging problems if:-1. If this sensor tells the PCM that the battery is too hot, the PCM might refuse to power the field coil 'cause it thinks bad things might happen if the. Check to see if the light turns on at all and if it doesn't, you need to replace it. I checked the alternator which was bad, producing less than 4 volts. Jun 18, 2014 Rating: Good alternator not charging battery by: Bruce What is the voltage of the battery before you try to start charging it ? With the engine running take a voltmeter and put the negative and positive lead from the meter on your battery posts and see what voltage is being supplied to the battery. Let's see, when I start the truck there is a series of beeps that sound off each time. This didn't fix the battery light from coming on. STILL NOT CHARGING. A greater difference of potential (voltage) between the battery's voltage and the alternator's output voltage will provide a faster charging rate. If the alternator bench tested good, that is all they do. Mar 3, 2014. 8 volt Lithium Ion batteries: You can see in the table above that the 300 Amp Hour battery can accept a charge at up to 750 Amps but the recommended continuous value is 150 Amps or less. First, the battery delivers a jolt of electricity to the starter. Check to see if the light turns on at all and if it doesn't, you need to replace it. OK guys help please. 8) and over 13 with the engine running and the alternator working properly. As good as an alternator is at replenishing your car battery; it can only recharge it to the point that it has a decent amount of life left in it and is able to accept a charge. Alternator not charging battery 40 Answers. 4 not charging alternator and battery good × Help us help you. Lol, no I'm not from Chile. Continuity is good between positive terminal and alternator B terminal and battery isn't being charged; BUT if I take off the charge cable from the B terminal it's getting 14V, put it back on it's back down to 12. 1999 to 2016 Super Duty - Battery light on, but alternator is charging??? - OK I have 14. If you cannot get your batteries up to 14. He also measured the alternator voltage, and while don't know the readings, he said it was "charging fine", even though volt meter on the dash showed it over charging. The Alternator light is not on when the car is running. If you had a weak battery and put in the new alternator without having the battery load tested, then you just learned a valuable lesson. Troubleshoot continued problems by using a multi-tester to see if your battery drains power while not in use. 4 not charging alternator and battery good × Help us help you. When battery light comes on it's apparent the alternator is not charging but then sometimes light goes off and alternator starts charging again. I replaced the old battery with a class 79 battery. My question is what is the problem. Battery or alternator: what’s causing the problem? Starting and running an engine, in its simplest form, is a three-step process. 1999 Ford Ranger XLT 3. I checked the battery and it was good. It should read at least 12. I made sure everything was hooked up and it was so i started the car and it doesnt charge. The battery is rated at 30AH to begin with and, unless it's really cold or really old, is usually good for at least 20AH if it can start the engine to begin with. When test between the alternator and the battery only showing 12. For example the battery reads 12v and alternator reads 14v. I have done many many hours of research and testing my car and checking things but have had no luck solving this problem. This time we figure, lets go as far as we can without shutting off the ignition. Flat battery in the car.