However, something is draining my battery. 2005 overcharging. Both should have a relative settling voltage. Alternator Vents Blocked. When I remove the two wire plug from the alternator and put a tester between the battery and positive cable it draws about 6. [4] [5] Choose a digital meter than can read up to 20 amps and down to 200 milliamps. 3L Power Stroke Diesel - Alternator Overcharging? - ok so long story short, on my journey back from camp yesterday my alternator went, I managed to get to a dealership. Interior lights, headlights, stereo accessories, and other electrical components can cause a Volvo draining problem. - Check for belt tension and condition, change belt if needed. Put The Car To Bed Before Testing For Parasitic Draw. Hi all, I have a 2008 PT cruiser (base model automatic) that the battery light keeps coming on. Most alternators in 12V systems produce between 13. The actual output voltage produced by the alternator will vary depending on temperature and load, and will usually be about 1. Voltage at battery with vehicle on should be 13-14V right after starting. It needs to be no lower than 11 volts to be in good shape. With replacement you need to baseline the system and this is covered in the FSM. 1999 Ford Escort. Then, turn off the engine. - Put the good battery in there. 2 is acceptable, whereas 16, 17, 18, etc. A regulator is a regulator. The battery is old: Lead-acid batteries last about 3-5 years. If a draw is depleting a battery, it can mean extra stress on the alternator and charging system. V8. AUTOMATIC. I measure both while disconnected and get ~12. Inspect the battery cables for corrosion. I have had problems with the batteries dying so i got them checked and the alternator. Close. 1999 to 2016 Super Duty - New alternator not charging batteries - I have a 2006 f350. 6-14. One Test Is Not Enough If only battery voltage is present at the battery on a running engine, does this mean the alternator is “bad?” No, it does not. Have a 2014 silverado and I keep losing power. There's two possibilities for this condition. The battery has one primary function, which is to start the car. 5. Maintains the battery's state of charge. Otherwise, the charging system test will not be accurate. Yesterday everything was fine to the alternator apears to be overcharging and the battery light is on. After starting the car, no battery light, about 30 seconds later battery light came on. FerrariChat - The world's largest Ferrari community. . 2) Your Battery Is Thirsty! 1. 8 volts your boiling the batteries with engine running. Hello all, I have a GTV TS 1999 that has been running fine for the short time ive owned it but last week the battery went flat overnight for no apparent reason. Turn the headlights on for two minutes and note the voltage both on and off. The voltage regulator has the same potential to ground as the left cylinder head and the negative battery post. replaced pin. 4 but goes right back to 16. 4. My alternator seems to be overcharging, and when I say overcharge I mean like 17+ volts, no lie. If your battery is quite flat it will make the alternator keep charging it's ass off And just cause the battery is only 8 months old, doesn't mean it isn't faulty. 7 or so. 1991 e150 351w 5. Battery checked out BAD. If a Delco 10SI or 12SI is overcharging and draining your battery it's likely going to be two separate problems. MASTERM15. Posted: Thu Feb 03, 2011 4:25 pm Post subject: Re: Battery Overcharging/Battery Dead after Sitting. :helpHey guys, fired up the Duramax today and noticed its overcharging, voltmeter on dash reads 17+ volts, yet truck runs great. Step 2: Determine whether the vehicle has a positive or negative grounding system. The alternator is designed to provide electrical power to the car’s systems and recharge the battery while the engine is running. Put alternator back in car but draws battery with power wire hooked up but plug in out. Turn the truck off in the driveway and put the title inside the house. Verify reading on both batteries and still at ~12. Connect the multimeter to the battery and run the engine at a fast idle (say 2000 rpm). The Starter Motor Cranks But The Engine Won’t Turn Over. Turn the headlights and heater on and it would go back to normal and stay there. 2. Time to get out the baking soda and water to neutralize the acid. 8 and the battery is good, the alternator is undercharging. com helpful? Yes No Sunday, May 11th, 2008 AT 7:41 AM Please login or register to post a reply. Then the other day I went about 70. You’ll note signs right away like poor starts, fluctuating meter readings, and dimmed headlights. 0. Replaced the alternator again still the same results. 2 volts after turning off the engine. 1. If the battery has been overcharged then the cells will be damaged . Put a meter across the battery terminal when running at speed & get a voltage reading. Symptom C: Flickering Or Dimming Lights. See full list on mechanicbase. 7v. K, so here's my problem. Although sometimes it can indicate a problem in the starting system too. 2 The sense wire is disconnected or has high resistance - more likely in my opinion. 5-2 volts over the battery voltage. After the engine is running, the alternator takes over. 1 volts lower, within rounding. 0 and the bat light comes on this morning. Check the voltage regulator. Over-charging is caused by the voltage regulator driving the alternator too hard. The alternator is going to be weakened by this heat; either the soldered joints, insulation, etc. Once all the modules go to sleep, the current drain drops significantly. A defective sensor can send the wrong signal and cause an overcharge condition. Anything past 14. Yes,it is,the alternator is charging to much,this can lead to other component failures. the best way to test an alternator is with a load test-partstores dont do that--battery may still have a bad cell even tho it tested good--an alternator can burn up charging a completely dead batt--make sure batt reads at 12. It can also be caused by a. Turn the. 5. You need to be able to test for Alternator Output with a multimeter at the Jumpstart Terminals under the hood with the motor running, and it should be in the range of 13. Oddly enough, battery doesn't seem to get hot even after driving a hour. Alternator overcharging. Codes went away, gota check the DS battery. 2008 Pt Cruiser battery light and possible overcharging. One of the hardest distinctions to diagnose in the charging system is determining if the battery is starting to go bad, the charging system is under-charging, or there is something draining the battery when the ignition is off. If the repair shop can't figure out what is wrong by themselves, you need to find a better shop to work on your Jeep. If your battery dies, you will need to tow your car to a repair shop. Video: The Sound of a Dead Battery. No Response At Ignition. Check the fuse. Hopefully that won’t cause too much damage in itself. Voltage fluctuated between 13. If so, defective battery -- or possibly the top of the battery has so much conductive dirt on it that it's discharging it - if so, just clean it off. 1. 5 volts to 14. Faulty Voltage Regulator. If the reading is around 12 volts, then the alternator is not working. The alternator is basically a generator that provides an even amount of low-level electricity, which it generates with a circular bundle of copper wires and a. You can only drive at a slow speed without an alternator. Thanks. After reading this article, I am now aware that a small amount of current draw is normal. On some cars, it takes several minutes for all of the computers to go to "sleep" (probably not the case in your Jeep). February 23, 2010. Replace Faulty Diode: If you identify a bad diode, carefully replace it with a new one of matching specifications. Everything was fine on it until about a month ago when the battery had died again. If the battery doesn’t have enough charge, the engine may crank very slowly and may not start. I didn't think there was a problem with it for the first week or 2 because I was just driving short errands around town, close to home. (No starter related issues, great cranking, disengaging properly etc. The serpentine belt is an accessory belt that links the engine’s components, including parts such as the battery, alternator, and generator. 2 when at idle. If you’re getting a consistent reading of 15 Volts or higher, most would consider the alternator to be overcharging. This becomes an issue whenever the car is in weather under 32 degrees as it refueses to start and just gives me a clicking sound from the starter. The 12 volt battery is a vital component of the starting system in Chevy Avalanche. Something like 20 minutes after idling the voltage was down to 13. Having an alternator die while driving can cause a multitude of problems. C. battery reads 12. 5 volts, 14 . Relay is probably after market to compensate for low voltage to starter solenoid wiring. 75 volts at idle. If not mechanically inclined have the alternator replaced. Anything lower is a bad alternator. A battery light on the dashboard. 6L I bought a brand-new alternator from NAPA for ~$220 - not a reman, plus a new belt. Overcharging from other sources like a faulty alternator or voltage regulator are not. You should still have 11-12 volts. Well, still overcharging. First off is same alternator when this all started. Tested with my multimeter, was charging a little over 18v. Maintains the battery's state of charge. 33 volts. In fact, discharging your battery to 0% lowers its voltage and places some additional strain on the battery when. Probably a faulty alternator. Reconnect both batteries; in 5-10 minutes, check both components to see if they have warmed. I Have A 2004 F150 With. This can lead to overcharging, which is a. I understand that it could be the alternator diodes. The two primary causes for a battery to deplete are parasitic power loss or a faulty battery. FAILS. ; Faulty Alternator Diodes: Your vehicle’s alternator has about 6 diodes that. 4WD. While not technically an alternator problem, a car that won't start is a definitive sign that there's a problem in the starting system. If not, the replacement alternator can fail sooner than expected. If the voltage is 14+V and no amps are being drawn then the problem is almost certainly not with the alternator. 3. It's a fairly simple system, consisting of a battery, alternator, voltage regulator, indicator gauge or warning. My 1999 Accord is overcharging. 3. . Then start the engine and measure the voltage at the alternator terminal with a multimeter. It is NOT intended to charge a dead or defective battery! Doing so is an open opportunity to damage the alternator or the electrical system (as in the smoking amp meter connection). 8v. Then in the rare event the tractor continues to run cuz of alternator backfeed when the ignition is switched OFF, I add in series a 5 amp 50 PIV minimum Diode. According to the Subaru battery settlement website, the Subaru vehicles in the lawsuit settlement include the 2015-2020 Subaru Outback, 2015-2020 Subaru Forester, 2015-2020 Subaru Legacy sedan. 30,557 Posts. Corrosion. Posted on Dec 14, 2010. 5 up to 15. If you disconnect the battery positive from the alternator and charge up the battery, the battery will hold charge. However, it’s also possible that the alternator is producing excess current. but the car will not Start. Disconnect the negative battery cable. 08 - 0. Solar to DC battery charger. Now lets test alternator. 53 Answers. Essentially, if the light lights, too much current is being drawn out of the battery. 6 volts, 12. My tester shows about 13. 25 amps across the battery with everything off. First, fully charge the battery, then disconnect the negative and put a volt meter or test light in series (between the terminal and the cable). 4. It converts alternating current (AC) to direct current (DC). 06, 5. Over charging will kill a battery is a short time.