Question about 1992 Mercury Grand Marquis

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MY BATTERY LIGHT STAYS LIT EVEN AFTER I PUT A NEW BATTERY IN

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Have the alternator tested also.

Posted on Oct 07, 2009

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1 Answer

Kia sportage 2006 battery light stays on even after new battery wh:-) at can it be


The battery light comes on due to improper system voltage. The alternator output may not be sufficient therefore the engine control module signals the light to be on for the system to be checked.

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Battery light stays on after installing new battery


If you had the proper voltage regulator
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Need to have that checked out before
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Peugeot 307 hdi 110. lights left on battery died, put a new battery in. car keeps turning but won't start. immobliser light stays on


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Dec 12, 2012 | Cars & Trucks

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Battery new alternator tests 14.40 volts but battery light stays on


You haven't given you vehicle's model number, but its possible that the battery light
may be on due to a fault detected in the voltage regulator - but in modern cars, the voltage
regulator is integral to the alternator (which you stated is new), and 14.40 volts is excellent
alternator output.
Another possibility is that the computer in your newer Toyota has not had its code reset
from when it detected low voltage output from the old alternator. Once the computer sets this
code, the battery light is lit, and remains lit until the error code is manually cleared by the
mechanic holding an OBD-II coder reader communicating with your car's computer.

Mar 16, 2011 | Toyota Supra Cars & Trucks

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My friend has a 2001 Volvo C70 that drains the battery constantly. She has replaced 2 batteries and is on her second alternator. It runs when boosted but turn it off and its dead. What can the problem...


The unfortunate thing is diagnostics DOES TAKE TIME. You need to set aside the time to be accurate.

Something for sure is draining the battery and methodical diagnosis is the only way to get it figured out. IF there were an open in the alternator to battery circuit, the new alternator would be damaged.

Pull the interior light and radio fuses, disconnect the negative battery and put a test light or volt meter in series with the cable and battery terminal. I expect the light will be lit or the voltage to be above .2 volts draw.... Disconnect the battery, remove one component, connect the battery test setup, and see if voltage drops or light goes out..... when it does, you have the offending system, so investigate that.

Be sure that you can garantee good ground between battery and everything....especially the engine.

Mar 16, 2011 | 2001 Volvo C70

1 Answer

On my 94 jeep im having an electrical problem, something is killing my battery and i checked the alternator and my starter and i can not find the solution something is killing my battery rapidly please...


START THE VEHICLE, PUT A VOLTMETER ON THE BATTERY. THE VOLTAGE SHOULD READ 13.90 TO 14.80. IF THAT IS OK, THERE MAY BE A BATTERY DRAIN. TURN OFF EVERY SWITCH IN THE CAR.CLOSE ALL THE DOORS. MAKE SURE ALL THE COURTESY LIGHTS ARE GOING OUT. & THE GLOVE COMPARTMENT LIGHT. RAISE THE HOOD. DISABLE ANY UNDER HOOD LIGHTS. DISCONNECT THE NEG. CABLE FROM THE BATTERY. PUT A 12 VOLT TEST LIGHT, ONE END ON THE NEG BATTERY POST & THE OTHER END ON A GOOD GROUND { METAL }. IF THE LIGHT COMES ON THERE IS A BATTERY DRAIN. NO LIGHT , NO DRAIN. IF IT'S ON, ONE AT A TIME PULL THE FUSES OUT OF THE POWER DISTRIBUTION BOX. IF THE LIGHT STAYS LIT, PUT THE FUSE BACK. DO THIS WITH ALL THE FUSES BIG & SMALL. IF THE LIGHT STAYS LIT, DISCONNECT THE ALTERNATOR. THEY CAN CHARGE THE BATTERY WHILE RUNNING, & DRAIN WHEN STOPPED.

Jan 11, 2011 | 1994 Jeep Grand Cherokee

1 Answer

We got a 91 honda acorrd lx with new barriery and altanater and the car doesnt stay powered up


There's a good chance you have an open circuit such as the door or glove box even the trunk light stays on even though they appear to be closed this switch may not make a complete connection most switches are made from plastic and they wear over time... A simple test with a test flight will determine this .. disconnect the negative terminal on the battery and connect one end of the test light to battery and the other to the battery cable With everything turned off does the light stay lit if so you have a draw in which case you'll need to pull fuse by fuse until the light goes out all while holding the door switch in the closed position so not to get a false reading... This is the starting point in which to determine just that.

Oct 29, 2009 | 1991 Honda Accord

1 Answer

Instrument panel warning :: Engine block :: electrical?


you have to clear all the codes first, your vehicle stored fault even when the battery was replaced it created trouble codes. have it reseted and see if it comes back on.
let me know

Dec 03, 2008 | 2003 Mercedes-Benz C-Class

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