No, the check engine light does not mean that your alternator is bad. My alternator went out in my cavalier and there were no warning signs until the car started to die on me. the gages, wiper blades(I was using them at the time) and radio were all acting funny-fading and turning on and off. Finally it quit and wouldn't turn over. Had to be towed to mechanic and they replaced alternator with a new one for about $280.00. You can get a rebuilt one, they cost less and it's even better if you know someone who can replace it for you.
check the engine belt and the alternator belt
Check fuseable link on alternator Check fuseable link on alternator
Change alternator or check alternator brushes
How to Change an Alternator: Video Series check related link below
I would check your alternator*(check the spelling).
Check voltage with a voltmeter at the battery With engine running readings should be 13.8-14.2 With engine running hold a screw driver to the back of the alternator, if there is no magnetic field, the alternator is bad.
The alternator in a Chevy Impala operates various electrical devices in the vehicle while the engine is running. A voltage regulator keeps the voltage level constant and is usually part of the alternator assembly. You may need to replace the alternator if your headlights become dimmer while driving, or your battery repeatedly runs down. Check the link for procedure,
It means that one gauge is not in the safe zone. Check the engine temp, oil pressure, battery/alternator voltage,It means that one gauge is not in the safe zone. Check the engine temp, oil pressure, battery/alternator voltage,
check the battery with voltmeter without the engine running then check with it running if voltage is higher it is working
It could.It could.
You don't. Disconnecting a battery cable to "check" the alternator is not a good idea. The removal of a cable with the engine running cuases a voltage spike that can damage the computer system on the car. The proper way to check the alternator is with a volt meter.
When my jeep cherokee alternator went bad, the check engine light came on and I didnt have a clue what was going on until my volt guage was reading in the red zone. When I replaced my alternator, the light went off. So in my opinion i wouldnt consider the check engine light as a alternator light.
The Check Engine Light has nothing to do with oil changes. It is on because there is a problem with the emissions system.
The check engine light does not come on for an oil change.
The check engine light has nothing to due with an oil change.
check the alternator. Use a digital multimeter and with engine running you should have 13-14 volts at the battery. If less than 12.5 Alternator is not charging Also check the amperage the alternator is putting out.
Start the engine and using a digital volt meter check the voltage at the battery with the engine running. If the alternator is good you will read from 13.5 to 15.5 volts DC.
Short answer, because somewhere on that engine block are the initials GM.Seriously, start with the easy and eliminate:check the battery for chargecheck the alternatorcheck the voltage regulator (not certain this model has one, but in case)check for the starter to be seized upcheck your ignition relay
Check your alternator, it will cause the engine to miss if it is not putting out enough voltage under a load.
Causes for the check engine light to come on in a 1981 Chevy Corvette include overheating, low oil pressure, and a bad alternator. Because this car is not equipped with a computer, it has limited self diagnostic abilities.
Check the battery with a vom meter while the engine is running. It should read about 14.5 volts and if so the alternator is working, than have the battery checked Now if the meter does not read 14.5 volts, have the battery, and the alternator checked. If they both check out okay, the problem is in the battery or the alternator circuit on the vehicle.
Engine number is underneath the distributor on front housing on the rough casting. If that fails check underneath the alternator on front housing.
It's the stator that has to be changed if it is not charging. Check to make sure. You have to take the engine out to do the job. Anywhere from 10 to 15 hour job.