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1992 Dodge D150 Question: battery drain

 

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Visitor, V8, Westwego, LA, February 09, 2011, 19:08

trying to figure out whats draining battery,light behind messaging center stays on & key halo light ring stays on does this have a timer on it.

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  • Answer #1

    patrick mannion from Greg Solow's Engine Room, February 09, 2011, 19:21
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    That sounds like your truck "thinks" a door is open. Does the interior light stay on?
    It may be a bad battery or parasitic draw on the battery. You may have some sort of battery draw that needs to be isolated and illuminated. You would need an amp meter disconnect one cable of the battery put your Amp meter in series with the battery cable that has been removed. Note the draw say for example 15 Amps, with the keys out of the ignition, doors closed driver's window down, start removing the fuse links and fuses one at a time until the voltage draw goes away to zero (or near zero about .02 to .05 Amps is about normal for a modern vehicle with a clock, stereo and other things that need "keep alive memory"). It is that circuit that is causing the electrical draw, then look at a wiring diagram, see what consumers are on that circuit and start to isolate each circuit to see which is the culprit. Modern cars have lots of computers and electronics that need constant battery even with the key off so parasitic draw of .2 Amps may be normal sometimes things stay "live for a minute or two after the door is closed so wait and look at the draw after a minute or two.
    For decent wiring diagrams there are two companies that independent auto repair shops "buy" their information from that offer a very reasonable service to do it yourselvers. You can get a one week subscription or year subscription very cheap. The information is year make and model specific repair procedures, service bulletins, component locations, wiring diagrams ect.... great quality information same as the professionals have,much better than generic workshop manuals from parts stores and much cheaper than the factory manual try Alldata which is very easy to navigate http://bit.ly/AllData_Repair_Manuals_Online or Mitchell on line http://bit.ly/Mitchell1_Online_Repair_Manuals and get an online repair manual subscription.

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    Visitor, February 13, 2011, 08:23

    thanks a lot,i will do what you said.

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