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Either the battery is very weak or the alternator has bad diodes .

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โˆ™ 2006-03-25 15:03:32
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Q: Why does the battery in 1999 Mercury Grand Marquis go dead in a few hours after turning off motor and headlights?
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Does turning on your headlights after jump starting a car help charge the battery?

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What causes the dashboard light to dim after turning on the headlights?

Because the power for your headlights is pulled from your battery. When the dashboard lights dim after turning on the headlights the dashboard lights aren't getting as much power as they were with the headlights off. With the motor running or off? The headlights draw a lot of current, but should not visibly affect other systems. There could be a problem with a worn out battery, an alternator that isn't charging correctly, or you have a bad earth between the battery and the chassis. Check the large cable connection between the battery (usually negative these days) and the bodywork, or between the engine block and the bodywork.


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Its the bushings on your suspension, It will cost $200 dollars to replace at a shop.


How do you change plug in 2001 Mercury Grand Marquis?

Remove the spark plug wire from your 2001 Mercury Grand Marquis. Remove the spark plug with a 5/8 deep well socket, white turning it to the left. Reverse the process to put in the new spark plug.


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Could be one of the door sensors causing this.


When her car would not start Joan began to solve the problem by turning on the headlights to see whether the battery was dead Her approach is an example of?

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How do you replace 2002 Mercury Grand Marquis 4.6l spark plugs?

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How do you reset the computer on a 1995 Windstar?

Remove negative battery cable. Turn on headlights. Wait 15 minutes. Turn off headlights. Replace negative battery cable. Better, go to Autozone, ask them to plug in their OBDII analyzer and hit "Clear". that way you do not clear the corrections the computer has added to the system and will have to relearn if you remove the battery cable. just remove the negative battery cable,wait 5 min,and put it back on,, computer will reprogram all by itself. Pre 1995 vehicles disconnect battery for 10 Minutes minimum Whats with turning on headlights with the battery cable removed? They will not work anyway


Why do your headlights pop up when turning on your parking lights?

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Why does a 1990 Volvo 240dl died after hearing noise thru radio and turning on headlights on?

Sounds like the charging system failed and the car ran until battery power was deleted.


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If you vehicle is front-wheel drive, more than likely, that grinding crunching sound when you turn is coming from the CV joints.


Will 22inch rims fit on a 2005 mercury grand marquis without a lift kit?

yes, but you will lose turning radius, rubbing and bottoming out. strongly recomend 2 or 3 inch lift


What would make a 97 Ford Taurus die when turning on the headlights?

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It may be out of battery.


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Why is engine not turning over?

Ck battery