How do you know when the alternator is dead?
Lots of things can go wrong. The bearing that is belt driven can fail. It can over, or undercharge your system. The best check is to check it's running voltage - it should be between 13-14.5 volts. Anything less than 12.5 and it's not charging your battery.
Fully charge the battery Check with a voltmeter (should read approx. 12.8 volts without engine running) With engine running and good alternator reading should be 13.8-14.2 if the battery is dead the car wont start. replace the battery (preferably with a new one) run the car and if it dies or wont crank again its the alternator (or possibly the alternator belt is slipping)
if the battery is dead, there will be no ignition lights etc when u turn the key your headlights would be very dim if on at all. the alternator only works when engine is running, so if alternator is dead it will not charge the battery most auto stores will check both battery and alternator for free if you remove from car and take them to the store
Yes, alternators are designed to maintain the battery, or recharge a battery that has been slightly discharged from starting the car. When the alternator is used to recharge a dead battery, it causes the alternator work harder and longer than it is designed for, causing it to overheat, thus causing damage to the alternator. A battery charger should be used instead. They are designed for charging dead batteries. After the battery is charged, let the…
You can test it your self. Start the car might be pain in butt if alternator is really dead if so let car sit for a little while and charge it self up. Also you can knock on alternator with a happer bunch of dust will fall out and it will get you enough time to drive for few day to go get new alternator and install it without car breaking down. Anyways start the…
If the keys in a 2000 Jaguar XK8 are left in the on position all night is the battery dead or is it the alternator that is the problem?
I would expect that the battery is dead; however, instead of jump starting the car, it is far easier on your car's charging system to place a battery charger on it for about 6 hours then start the car. Otherwise, the alternator tries to charge the dead battery at a wide open rate and it can damage your alternator. Mark
It varies depending on how much other electronics you are using on the vehicle at the time. Could take hours. I do not recommend you charge any dead battery with the alternator if you can avoid it. it puts too much of a strain on the alternator and may damage it. Charge a dead battery with a battery charger.
If your battery is always going dead a day or two after a boost, then it most likely the alternator. Two surefire ways to see if the alternator is bad is to take the positive (red) battery cable off after starting the car. If the car still runs, alternator is good. If the car stops running, then it is likely the alternator. The battery is just to turn the car on and then the alternator…
I assume you mean how long to charge the battery. You should never let the alternator charge a dead battery if possible. The alternator is designed to keep the battery charged but not to charge a dead battery. You put a strain on the alternator and it can cause a diode to burn out. Drive home and then put a battery charger on the battery to fully charge it.
What is it when the tail lights stay on and interior lights stay on and make clicking sound on 94 stealth?
The engine is clicking with all of the interior lights on? Dead battery... and for future reference... if there is no clicking= really dead battery and it might not recharge. In that case check the alternator, if the alternator is still good, just buy a new battery. If the battery continues to fail to recharge get a new alternator.
Typically you know your alternator is out when you have to jump start your car numerous times. A way you can test it is by turning on your car and while it's running discount the + terminal. If the car turns off then your alternator is bad. If the car remains in then alternator is good and possible bad battery. Hope this helps
If the engine doesn't turn over on a 91 olds cutlass calais how do you know if it is a starter of alternator problem?
Answer If the battery's dead it could be the alternator or a bad battery. If not, the starter. Try jumping it. If it starts the starter's OK. Then investigate the alternator and battery. Does it turn over but not start..?? There is a difference. Doesn't turn over would most likely be the battery, which is typically followed by a clicking noise. That would be the starter solenoid trying to engage but the battery doesn't have…