Question about 2000 Plymouth Neon

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I change battery and alternater and battery light still comes on and power still is draining

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I have had that happen before, it ended up being the alternator fuse was blown. the fuse on my car was located under the box that held the air filter. hope this helps

Posted on Apr 06, 2011

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Posted on Jan 02, 2017

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1 Answer

Have a 2009 Saab 9.7x4,2i starter good alternater good but battery dies over night


Usual culprit is boot (Trunk) light.If not, try disconnecting battery and if a spark jumps as you take the lead off it shows there is a power drain. If no power drain it points to a faulty battery.

Feb 22, 2015 | Saab Cars & Trucks

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Something is draining my battery overnight. I have taken out alternater and had it checked out. Auto parts says alter, and battery are good.


How much time goes by to affect the battery? Cars today have many auto-light features but start with obvious things like the trunk light or under hood light that might not be going out. To find out the size of the drain disconnect the battery cable and connect an ammeter between the battery post and the terminal. Large drain big thing small number light bulb.

Dec 04, 2014 | Cars & Trucks

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Batterie will not stay charged///the light comes on showing the battery


Not good to pull cable off batteries to test alternators an yes could be alternator or u may not have power to the alt.meaning the wire on top of alt or may havy bad plug wire boyh easy to check

May 15, 2014 | 1998 Oldsmobile Silhouette

1 Answer

Check engine and battery lights are on after i changed both(battery and alternater) ...the car would run but the battery will be drained what's wrong wit my 96 eclipse


If you used a new or rebuild alternator, I'd suspect that the harness from the alternator to the battery is open circuit. It happens with age and corrosion. Measure the alternator terminal voltage, engine running. Should be about 13.7v. Same voltage should appear on the battery + terminal. If not, make up a heavy duty temp cable and run it from the alt to the battery.

Oct 13, 2012 | 1996 Mitsubishi Eclipse

1 Answer

Replaced starter, alternater and battery car still drains battery. whats wrong?


First you can not test an alternator by disconnecting the battery cable. That is what we did back when cars had generators. Today you can fry the computer and alternator running the engine with the battery cable off.
Meanwhile, I would look for a fuseable link or main fuse problem. The alternator circuit may not be connected to the fuse box and battery.

Aug 23, 2012 | 1998 Chevrolet Malibu

1 Answer

My battery keeps dieing while running. just changed the alternater three weeks ago.


Hi.

Make sure that you also replaced the battery. Battery elements may be shorted inside. That will result in battery draining even if the alternator is working.

If you have already replaced the battery check power across battery terminals with engine on and revving above idle.You should read voltage in a range of 13.5/14.4 volts when engine is revving at about 2K rpm.

If the voltage is still wrong after replacing alternator and battery check the voltage regulator connected to the alternator. Here the part.

If battery, alternator and power regulator are OK, test wiring to find out if there is a short to ground that is draining the battery while you drive. This fault is quite unusual with your symptoms. Check battery, alternator and voltage regulator first.

Regards.

Ginko

Dec 15, 2011 | 1991 Pontiac Sunbird

2 Answers

Have to charge battery after it has sat for 6 plus hours. We have new alternater and battery. They work good. Any idea as to what could be draining battery? Checked all fuses.


its obvious there is a drain somewhere was this problem present before the battery and alternator change,if so suspect one of the new parts .but if not then start by removing the negative terminal and place a test light across the connection the test light might light up due to small power uses like clock in vehicle. but if its very bright then start pulling fuses until it goes out or dims down find what that fuse goes to and you have you culprit.

Nov 21, 2010 | 2000 Ford Windstar

1 Answer

My car


to truly eliminate the alternator you have to disconnect from the wires over night to see if battery is still drained good chance that alternator is the cause.you also can put a test light in between the battery and the ground cable (negative)as you disconnect the alternator you should see a difference in the test light. the bulb will dim down if alternator is draining the power.

Jan 07, 2010 | 2000 Volkswagen Jetta TDI

1 Answer

1986 volvo wagon DL charging system in Arizona heat


you have a power drain somewher.
unplug your battery " positive " , wait a few seconds.
put the connector back to the battery and see if it sparks, if it does there is something shorted out and draining your power. probably your alternator was good.
if there is no sparks thencould be your voltage regulator or your battery.
let me kniow

Jun 25, 2008 | 1984 Volvo 240 Series

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