Question about 1995 Nissan Pathfinder

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2002 pathfinder killing the battery for no reason. Sometimes overnight others it takes a couple days. Replaced batt. and alt. but problem still exsists. Ive already checked each circut by pulling fuses for a draw.

Posted by novamad70 on

  • janman May 11, 2010

    how old is the battery?

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To check for a parasitic battery drain, you will need a multimeter. set it on the 300 mA setting then remove the negative battery cable on the vehicle. put the multimeter's negative lead on the battery post and the positive lead on the vehicle's negative cable. the meter will tell you how many amps are being drawn. usually, there's a temporary spike (a second or two) for the vehicle's security system, relays, etc. after that, you should only see a draw of approximately 30-40 mA, which is the digital clock, memory settings on the radio, etc. if you're seeing a larger draw, you can begin removing main fuses in the fuse box under the hood to see where the draw is coming from. it's also possible that you may have a bad diode in the alternator, which would cause the alternator to draw current away from the battery when the engine is not running.

Posted on Feb 05, 2010

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