As a rule you should replace your battery when you change your alternator. Especially at $600. I have seen DMEs go bad due to the car sitting for long periods of time and then the owner fires it up and the alternator full fields trying to get the battery V up. I have also seem them short out with battery chargers/boosters. May 15, 2001 · If everything ran fine before with these mods then I'd suspect the Alternator but the battery might not be holding a charge, 3 years is a long time for an Exide to live. Put it on a charger and see if it takes a charge or just have your Alternator tested. My motor. Black primer 66 coupe, bench seat 5.0, F303 roller cam, TFS heads, Demon 650, MSD Until the battery was replaced, the alternator on the Flex was getting cooked as it tried to recharge their five-year old battery and moving closer to an even more expensive alternator replacement. In fact, the alternator likely saw added stress over the last year, as it struggled to maintain voltage in a battery moving closer to being replaced. May 07, 2005 · Upon my search for a good replacement alternator, I found many people asking how to remove the alternator. So here it is... BTW, I'm replacing with a PA performance unit... First remove the belt. I next placed the car on jackstands, to have good access to the bottom of the car. Next, remove the 8mm, battery retaining bolt. - Advanced BMS is heavy duty to fit any size alternator. 13. How long will these lithium batteries last compared to lead acid ? - 5 to 10 years, at least double a lead acid battery Jun 30, 2017 · Bad alternator?? I got my 2013 Sonic LS exactly 30 days ago, and today I'm having my first problem with it. This morning it wouldn't start, all I could hear was a rapid clicking sound from the engine area when I turned the key.
The first and very clear sign of having a bad battery in your car is that when you try to unlock your with a key, it won’t unlock and only the driver seat door gets unlocked. Or maybe when you try using a remote key to unlock the car and it won’t unlock. These are the clear signs of having a bad battery. The battery is unable to take load on it
Mar 14, 2016 · Disconnect the wiring harness and the battery cable from the back. Now start loosening the two 13mm bolts on the back of the alternator and the 15mm bolt on the front. Be prepared to catch it when you remove the last bolt, because the exciter wire is still attached and could break if the alternator falls. Quickly disconnect the exciter wire. An old timer told me this trick test to see which is bad, the battery vs alternator: With the car running, pull the positive battery lead. If the alternator is running correctly and strong it will generate enough juice to keep the engine running (and therefore the battery is the problem). If the car dies then the alternator is the problem. The GR 6 (AN 88) requirment is for at least 30 min of battery life after the failure check list had been done, some people calculate this, however I wanted to be a little more practical when I upgraded the avionics on my aircraft and so decided to meet the requirment by demonstrating the the time to failure following the loss of the alternator. If an alternator goes bad, it certainly can kill a battery. Car batteries don’t like being run all the way down. If you have a fairly new battery, you can usually get away with it once, maybe twice. If the alternator was ailing for a while, the battery may have been low for a long time, which also isn’t good for a battery. Dec 01, 2020 · Would this be an indication the battery(ies) aren't holding a good charge? Or perhaps a bad voltage regulator assuming that's how the alternator is being told when to ramp up/down? This is my second JL. My old Sport would start at around 13.8 and drop after some driving (30 -1hr) to 12.8 to 13.2 area.
Oct 20, 2017 · 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. Basically, your battery gets the engine going, but once it’s on, the alternator takes over and can, in theory, continue running the car without the battery’s help. The modern charging system consists of the alternator, battery, wiring and electronic control unit (ECU). Older cars may have a regulator, but in newer cars, that is now part of the car's computer. The alternator creates electrical power to run accessories and recharge the battery. Hi! My electrical problems are getting worse: now my battery discharges below ability to start the car within an hour (the battery is less than a year old). However, I'm no longer driving the long distances I had been, so if my alternator's bad, maybe its just not recharging sufficiently. So I checked my alternator output at idle: 2 amps.
Feb 24, 2008 · Depending on how bad it is, you cannot drive very long with a bad alternator. Once your car is started you can drive your normal distance. The problem comes when you try to restart the car. If your alternator is bad it won't recharge your battery while driving, meaning that the battery's juice will drain as you drive and try to start the car. Replacing a car battery is not as straightforward as it once was. If we take the battery out of the car, we can’t start it, we can’t drive it, we can’t even listen to the radio. So it is vital. And you know batteries last quite a long time for some folks, not so long for others. But sooner or later, every battery is going to go bad. Aug 29, 2015 · every alternator i ever encountered (well except for one) used its metal case for negative. Of course that's bolted to the engine. Battery negative wire varies with make and year model. (VW's up to early 70's were positive ground !) My friend recently had troubles on his GMC truck. His battery negative was wired to fenderwell. when the battery light comes on this is because the alternator is not charging the battery and the voltage goes below 12.5 volts. When the alternator is working and the engine is running it will charge at 14 volts. if you have a volt meter you can put it across the battery and measure voltage with engine running should be near 14 or alternator ...
Jul 17, 2009 · The alternator is a 45 amp (65 amp?) from an older Ford product like a Mustang or something? Those are pretty generic alternators with a Field terminal, a STAtor terminal, and a BATtery terminal. Been using that type of setup for most of the 29 yrs I've had this old boat. The tach is driven from the Stator post on the alternator. Feb 14, 2011 · Ok so here's the story: My battery has been dying a bunch these past few weeks, so i tested the alternator and it wasn't giving a charge, I assumed the alternator was bad and put a brand new one on. Now i hooked up the voltage tester to the battery with the new alternator and the car still seems to be running off just the battery (at about 12 ... Buy ANCEL BA301 6V 12V Battery Load Tester Car Alternator Analyzer Cranking Charging System Test Tool for Motorcycle Car Boat Light Truck and More: Battery Testers - Amazon.com FREE DELIVERY possible on eligible purchases After that, the battery may serve as an electrical reserve in case something goes wrong with the alternator's power flow. But overall, the alternator is the king of a car's power source. It is the component that keeps the car running after the battery helps start the engine. How Long Do Alternators Last?Oct 28, 2020 · The alternator charges the battery when the engine is running and, once the battery is depleted, the vehicle will die and fail to restart. How long does an alternator last? An alternator is designed to last the life of the vehicle—but that doesn’t always happen. I tested the old alternator and it was bad. So of course I bought a new alternator assuming that would fix the problem. Drove it to work and back and lights went dim, rpm gauge went out. after a total of 30 mins of driving. "Battery starts the car. Alternator charges the battery. So, if I have a weak battery, the alternator should recharge it fully if I drive long enough?" Sounds perfectly logical. Too bad it's dead wrong.
Defiantly a bad battery, a usual life of a battery is 3-4 years. It will get to the point where even a jump start will not work.