Question about 2007 Toyota RAV4

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Battery acts dead, get a jump start and it runs fine. Battery load test shows battery and alternator are good. Could it be a bad relay?

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The battery may have a bad cell. If a jump gets the vehicle started, replace your battery and you should be fine.

Posted on Mar 18, 2011

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How do i find what is draini g my battery? Battery is new (6 months) and if i turn car off and have any door, trunk open for longer than 1-2 min battery wont start car without jump


That only means, with your explanation, the battery is bad or has a dead cell. It happens. Have the battery fully charged at a battery rebuilder and have him load test the battery to find if indeed it is bad. If not, have your charging system checked. A test when running should show 14 volts or better, meaning the charging system is good. If the test shows the battery stays at 12 volts, it is not charging and your alternator is at fault.

Jul 10, 2017 | Cars & Trucks

1 Answer

Truck keeps dieing


I will throw out a few ideas, maybe someone else had the identical problem and solved it. With the gauges spiking, you have electricity running around trying to find a place to ground. This is not the whole problem though, because something is staying connected long enough to drain your battery.
There are several Alternator tests, Voltage output, and the Diode tests. You can get good readings on Voltage and still have bad diodes. Diodes act like little gates to keep electric flowing in one direction. When these little gates fail, it allows the battery to discharge through the Alternator.
Your problem sounds also like a stuck Relay. Relays work differently than many people imagine. Relays not only connect the HOT positive wires, but also connect one Negative wire to another Negative wire. When the contact points inside the Relay stick, a Negative wire may stay connected when the vehicle is turned off. Same thing for Positive wires in the Relay.
"Not starting" when shut off is confusing. Do you mean it cranks normally and does not fire up? or do you mean the Battery is dead and the starter will not crank the engine? If the Battery is too low to crank the engine immediately after driving, then the Alternator is not charging while you are driving and is not showing a discharge.
You may simply have a bad Ignition switch. The Alternator needs power from the ignition switch and it gets into the Alternator through the small plastic clip that goes into the Alternator case. Shorting inside the Ignition switch can also affect the Relays powered through the switch. The Ignition switch would be a good place to start to make sure all circuits are getting reliable power and that when the key is out, power is really off.
So have Autozone, Advance, or Oreilys do a Diode test on the Alternator on the truck. Its free and doing it on the truck can reveal truck wiring problems that will not show up on a bench check.
Hope this helps.

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2008 Chevy Equinox would not start, turn key and nothing happened, replaced battery, ran just fine for a week. Tried to start one week later it acted like it wanted to start but wouldn't. Had ju


Usually a sign of something draining the battery.
The machine test probably showed the battery could hold a charge and the alternator was charging the battery.
You may need to have someone check for a power drain.
When the key switch is off, there may be a weak short to ground or a relay or component that is using power.

Jan 22, 2013 | 2008 Chevrolet Equinox

1 Answer

I have a 1996 Grand Cherokee Limited this is giving me fits with the charging system. I've replaced the battery twice in the past 3 months. I've also installed a factory rebuilt alternator. I can drive...


Alternators have a built in regulator that tells them when to turn on and off. Just because the alternator is working, does not mean the regulator is turning it on and off when it should, in turn, over charging or undercharging your battery ruining it. The problem is you could also have a short somewhere that is draining the battery when it gets damp. The starter or a bad battery cable is usually the culprit here. A bad battery cable can mimic a dead battery, and when you jump it you put enough power to allow it to "jump" the bad spot, But also put a major strain on the cars electronics. So start with new cables, a 96 is 15 years old. Inspect the starter for any sign of corrosion or other damage at the same time. If this doesn't help, demand a replacement alternator. 98% of rebuilds are good, but 2% aren't.

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94 saturn sl1-went out to start the car tonight, and it acted as though the battery was dead. got a jump from a neighbor, and car started just fine. however, when I turned on the heater blower, the car...


Sounds like the alternator / voltage regulator is malfunctioning or there is a bad connection to / from the alternator / battery.

Do you have a multimeter so you could test the alternator -- or could you take the car to a parts store such as Auto Zone where they could test the alternator for you ?

Charlie

Feb 12, 2011 | 2002 Chevrolet TrailBlazer

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Pontiac G5 only starts when jumped. Battery tested out fine, Alternator tested out fine. Not running any codes...Now what?


Was the battery "load tested"? lotso f auto parts stores just test for 12 Volts across the terminals. You ned to have it load tested. Thats where a load simulating the starter is put on the battery. I have a carbon pile tester that places 500 Amps on the battery. many times I have seen a battery show 12 Volts and fail the load test due to a dead cell.

If it's a side terminal battery, it's really hard to get a good clean connection.

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My 2003 chevy ventuew will not start anymore


battery probably bad or you have drain somewere
start with the easy,have battery charged and load tested

Mar 25, 2010 | 2003 Chevrolet Venture Passanger

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I need a fuse and relay diagram for a 1995 buick lesabre, car cut off (no power), it will not jump off either, making a clicking noise behind the glove compartment , is it electrical , the alternator , it...


The fuses and relays are on the back fire wall under the hood.Just remove the plastic cover.This is not a fuse problem but more than likely a bad battery or charging system problem.Check the battery.Have it load tested and have your charging system tested also.Make sure all the cable connections on the battery and alternator are all clean and tight.Hope this helps.Good luck.

Jan 06, 2010 | 1995 Buick LeSabre

2 Answers

The alternator is still good but everytime i jump start the car it makes it half a block and dies.


Your alternator is charging however it is not still good if it does what you are stating. Also what is the condition of your battery if you have to keep jumping your car? Car batteries don't like to be completely discharge and may not hold there charge again once run dead and may need replaced... Alternator has to have be bad as it needs to be load tested to best determine it's true output. Most auto parts stores do a run test and no load test. Load test will tell amperage rate and true quality of an alternator.

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