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Car with a dead battery do you Check the output of the alternator OR check the condision of the spark plugs OR Both OR Neither?
Wiki User
∙ 15y ago
Make life easy for yourself, just jump-start the engine, and while it's running put a meter across the battery. If you're getting about 14 V across the battery (after the jumper cables have been removed), then your alternator is ok. If it's BELOW 12 V, you probably have a bad alternator.
Wiki User
∙ 15y ago
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Why would your battery light stay on after you have put in a new battery and alternator?
The battery light comes on when the alternator output voltage is too low or too high. You have a wiring or regulator problem.The battery light comes on when the alternator output voltage is too low or too high. You have a wiring or regulator problem.
Your volt meter reads 16 volts at the battery at idle The alternator and voltage regulator have been replaced Do you have a problem?
Alternator Output Voltage RangeGenerally, alternator output voltage is consider OK if it is in the range between 12 1/2 volts to a maximum of 16 volts.Therefore, although the output is at the maximum, you do not seem to have a problem.Usually, if the battery has had a lot of drain, then the alternator output will run at the maximum until the battery is fully charged.
How do you get a battery light to go out in my 1989 mercury topaz?
The battery light is for low alternator output voltage. Try testing the alternator output using a miltimeter and if its less than 13 volts your alternator isn't putting out what it should. If it has low output check the belt tension and all wire connections before replacing alternator
Your battery light came on while driving your 98 neon your battery and alternator both checked out ok but there is no output from alternator what can you check next?
Wires between Alternator and Battery, and between Alternator plug connector and fuse box etc.
How come 1995 Oldsmobile cutlass alternator not charging battery new battery and alternator?
You have an open connection from the large alternator output post to the starter main battery post or fuses blown or circuits open feeding the alternator control wiring.
Why is battery lamp on 87 f150?
Check the output of the alternator--should be 14.2 volts
I have a 1988 Chevy Cavalier. I replaced the Alternator and Battery and also changed a linkable fuse between the alternator and battery. The test still reads no output to alternator. Any ideas?
?ignition control module/pickup
What does a battery temperature sensor for a Plymouth neon do?
The battery temperature sensor is used to fine tune alternator output for better fuel economy and longer battery life. Note, this change is alternator output is very minimal and typically cannot be detected using a Digital Volt Ohm Meter (DVOM). However, if the charging system is hooked to a lab scope, a change in alternator output will be detected. This change is typically seen in amperage output, not voltage.
When a battery requires water freqently the battery is probably?
It may need replacing or it can be the alternator is overcharging the battery. Have the charging system checked out. The alternator should output from 13.5 to 15.5 volts with the engine running at idle.
How are alternators linked to the cars battery?
The output lead from your alternator is bolted to the positive lead of the battery at the starter solenoid. The grounds are both to the vehicle body or, in some cars, the ground from the battery is grounded on the alternator bracket.
Will a diesel engine run with battery cable disconnected if the alternator is bad?
A vehicle may not run if the battery cables are disconnected with or without a bad alternator. The best way to test an alternator is by voltage output when applying a load.
What is the purpose of a diode in an alternator?
The diodes are part of the rectifier assembly that converts the alternator's AC output to DC. The alternator's charging output flows through six diodes in the rectifier assembly before it goes to the battery and electrical system.
