Question about 1994 Geo Tracker

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Problem with lights on my tracker it drain's my battery i have a good altnator on it

I have a problem with my tracker when i charge my battery and then i turn on my lights they drain the battery i have a good altnator what else could it be.

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  • Geo Master
  • 5,368 Answers

If the lights drain the battery when the engine is running, then you have a bigger problem of the alternator not charging, not working. When the engine is running, the alternator supplies all the current to run the car's electrical systems, while also charging up the battery for the next start-up. If you know the alternator is good, then maybe a fuse or fusible link has blown, preventing the alternator from working. To check, put a voltmeter on the battery with engine running-it should show over 13.5 volts if the charging system is working. If the alternator is not putting out, the voltmeter will read same voltage on the battery as when the engine is not running. A fully charged battery should show "around" 12.6 volts. A discharged battery will show less than 12 volts. That should give you an idea of the range to look for on a voltmeter. I believe some parts stores will check the voltage for free. I know most stores will test the alternator and battery for free if brought into the store, but you need the voltage read while on the car and engine running. If the system is charging normally and the lights kill everything, you may have a short in the lighting system.

Posted on May 05, 2013

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Posted on Jan 02, 2017

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SOURCE: 1993 tracker, 4x4 auto ac...

If all you say is true, good starter, new battery, and 12v at solenoid.... then you have to have a bad ground...check the ground wire at the engine block and make sure all cables are tight...

Posted on Jun 06, 2011

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1 Answer

Won't charge new alternator and wiring is good new brain too. still just running off battery


Look for loose connections at alternator, an open fuse or bad fusible link in the harness.

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Need to know why does my trackers lights go out when i turn them on i got a good altnator what could it be


what lights. ?
state what lights work and other things, and what dont , do not skip things.
and this evidence tells me ,what is bad.

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Connect an ammeter in series with the battery positive terminal and battery positive lead. With ALL systems off, including alarm, door lights etc and with doors closed you should have a reading of only 0.03 amps.I'm guessing that yours is higher as it sounds like you have a parasitic voltage drain.If indeed it is higher, then disconnect any alarm system first and check your amps again. Every time you disconnect something, go back and check your amps.Once you get your amp drain back to normal, then you have managed to disconnect the system responsible for the high current drain.
The most likely candidates are always the alarm system, then stereo, then GPS tracker. After that you will have to start pulling more fuses, one by one and letting the vehicle rest for a few minutes after each thing is disconnected before taking a reading.
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first have the battery load tested as it indicates that there is a dead cell
If there is a dead cell then the dead battery will consume most of the power from the jumper so there may not be enough left for the starter and the ignition
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IF YOUR BATTERY LIGHT AND THE BRAKE LIGHT ARE ON AT THE SAME TIME THAN CHANCES ARE THE ALTNATER IS FAILING. WHAT I WOULD DO TO TEST THIS AT HOME IS START THE CAR, REMOVE THE BATTERY CABLES IF THE CAR DIES THAN THE ALTNATER IS ON IT'S WAY OUT. IF THE CAR STAYS RUNNING TURN THE HEAD LIGHTS ON IF IT SLOWLY STARTS TO DIE SAME THING THE ALTNATER IS GOING. OR IF YOU ARE NOT SURE YOU CAN DO THAT YOU CAN GO TO YOUR LOCAL AUTO ZONE AND THEY CAN TEST THE STARTING AND CHARGING SYSTEM FOR FREE. TRY THAT AND GOOD LUCK HOPE THIS HELPED.

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