Yes, it can ruin the battery by overcharging it. If you are reading between 13.5 to 15.5 volts at the battery with the engine idling then more than likely the alternator is good and you battery has a dead cell. A fully charged battery will read 12.6 volts with the engine not running.
unstable idling and battery indicator lights on.
Cleaning the battery terminals had nothing to do with the engine not idling properly. Just a coincidence.
13.5 to 15.5 volts with the engine idling.
Yes, as long as the charging system is is good working order.
No, it doesn't. When your phone/laptop/tablet is idling and a screensaver is running, it uses CPU and it doesn't conserve battery life.
The charging system is not working. You need to take it to a shop and have it tested.
Hot, idling in drive, 20 lbs.
You can add engine wear but the reading on the odometer will not change since the sensor for the odometer is located at the output end of the transmission or transaxle, and therefore only gives a reading when the vehicle is moving (or when the wheels are spinning, if you are on ice or up on a hoist). So, no, you will not add mileage by idling.
A low oil pressure reading when idling for a 1986 Fiero is normal. As long as the oil pressure goes back to normal when the car is being driven, there should be no problem. If it is not, then the oil pressure sensor or the oil sending unit should be looked at.
If the regulator is bad, the alternator would have a low charge or a high charge or no charge at all. With a good battery that is fully charged (12.68 volts) and the engine warmed up and idling with no accessories on, you should get a voltage reading at the battery of 14.2 v (plus or minus .2 v).
Unless the battery is shorted or sulfated and will not take or hold a charge, most likely the alternator is bad
As long as your car engine is running, it should be OK. An exhausted battery will only become a problem when you try to start the car.
easy...all you have to do is to remove either one of the battery terminals,while the car is idling...if it dies,then it is not charging
Check the voltage at the battery posts with the engine idling. It should read from 13.5 to 15.5 volts.
my idling on my 2001 ford focus is not idling correct, tried to adjust idling but there is no screw or way to adjust why?
12 volts with the engine off. 13.5 to 15-5 volts with the engine idling.
Engine is idling too slow or the alternator is weak. Or battery is getting tired.
A dirty or clogged air filter would cause excessive fuel consumption, and it could cause the engine to surge, but I'm not sure about the drop in your alternator guage.
A quick way to tell if there might be a problem with an alternator is to remove the positive side battery cable from the battery while the vehicle is idling. If the engine dies, odds are there is an alternator problem.
No. Battery cranking amperage has nothing to do with engine idling. There are a lot of potential issues from vacuum issues to ignition.
sounds like the alternator is going bad.
Bad Alternator and have your battery checked for bad cells
The alternator does not hold a charge. It charges the battery. If it will not charge the battery then either the alternator is defective, battery is defective, or the connections are corroded or loose. You should read 13.5 to 15.5 volts at the battery with the engine idling. Check it with a DC volt meter. If you get less the alternator is defective. If you get much more the voltage regulator is defective.
They will run somewhat hot while charging; if you put your battery in discharged however, that makes the alternator work much harder. A alternators job is to maintain the charge in a battery not to charge a discharged battery.Keep a eye on it, it will probably be OK once the the battery is topped off.