Tip & How-To about Chevrolet Camaro

Easy way to confirm if your alternator is kicked the bucket.

You go out to your vehicle and your vehicle wont start. alternatively your driving along and the radio starts to go quieter, your headlights get dimmer, and the engine starts to lose power until the engine quits, and your forced to pull over. You try and restart and hear either a click, or get no reaction at all. The battery is dead. Darn you say, well often people think the battery is at fault. Sometimes it is, but more often its the alternator thats to blame... When your alternator is dieing the vehicle will get its power from the battery. That means all your systems are running off the battery in whole or part, including your engine. Its getting the power for the spark plugs also from the battery, which is why your vehicle will soon die, and need a jump or towed. Well an easy way to determine if its the alternator and not the battery is to get the vehicle started with a boost, then remove the cars negative (-) terminal from the battery... If the engine dies right away as soon as its disconnected then you alternator is to blame. If the engine keeps running then start looking for another cause... Warning, just because you find the alternator is the trouble, dont automatically think that the battery doesnt need to be replaced. Sometimes when one part goes wrong, it takes other parts with it... This tip is for all cars and trucks...

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honda accord alternator


IF the alternator is not putting out anything. The car will run till the battery is not able to produce enough to fire the ignition, then it will die, It wont restart either. Jumping it will start it for 5 or ten minutes, this is with no warning either.

Apr 26, 2013 | Cars & Trucks

1 Answer

drive 2007 grand prix. wont even turn over or click.lottsa batery. Everything works. Just wont start or turn over. When starts and I drive it, then stop and turn off,sometimes wont start. Half to sit a few min. then will start. sometimes. May not start till next day. Can stop for gas then try to start and wont. half to play with keys to get to start.


SOUND LIKE ALTERNATOR NOT CHARGING BATTERY.CHECK BATTERY VOLTAGE SHOULD BE 12.6 VOLTS.MAY SURE BATTERY CABLES CLEAN AND TIGHT.WITH ENGINE RUNNING CHECK ALTERNATOR OUT PUT AT BATTERY.SHOULD BE 13.5 - 14.5 VOLTS WITH ENGINE RUNNING.IF ALTERNATOR FUSE GOOD AND ALTERNATOR BATTERY FEED WIRE AND VOLTAGE REGULATOR WIRES OKAY NOT DAMAGED.DRIVE BELT NOT SLIPPING OR BELT TENSIONER NOT DAMAGED.ALTERNATOR MORE LIKELY FAULTY.TURN OFF RADIO FIRST.BEFORE REMOVING NEGATIVE BATTERY CABLE TO KEEP FROM LOSING RADIO CODE.

Apr 10, 2011 | Pontiac Grand Prix Cars & Trucks

1 Answer

94 caprice classic ls wont start after sitting overnight.It will crank but only barely begin to start sometimes until the 12-15th try.I have noticed that it shows a dip in voltage while driving with headlights,radio,wipers,and heater fan on too.


What you are describing sounds like the alternator is starting to fail. Most part stores don't charge to check the battery and alternators now so you may want to have it checked out.

Sep 23, 2010 | 1994 Chevrolet Caprice Classic

1 Answer

1996 lexus es300 wont start


You have lost power due to a major short or fault. The fact that it happened while driving would seem to point to the alternator or a battery cable perhaps with a loose ground or bad corrosion.
You have an intermittent connection and you will need to examine cables and have the alternator tested, along with battery. These can be tested while in the car.
If your battery has failed or seemed weak lately that would point to the same symptom, however since your wipers and windows work, it would indicate that the alternator has been recharging somewhat after starting the car, so look for loose or damaged wiring between the battery, alternator and starter, before removing anything.

Dec 31, 2009 | Lexus Cars & Trucks

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