Guest blueangel Posted July 24, 2006 Share Posted July 24, 2006 The supe is in the garage no lights on and the keys not in the ignition, None of the doors are ajar and the stereo and the gauges all turn off when the keys come out. So what could be draining the battery as i gave it a full charge the other day and next evening it was dead as a dodo.The battery is from halfrauds. Quote Link to comment Share on other sites More sharing options...
Ian R Posted July 24, 2006 Share Posted July 24, 2006 Faulty earth would be my guess Quote Link to comment Share on other sites More sharing options...
wkdtime Posted July 24, 2006 Share Posted July 24, 2006 Mate do the following, 1.Get a Digital multimeter. 2.Set it to to read current (Ampere), you may need to adjust the DVM to read within range. 3.Disconnect the negtaive lead to the battery. 4.Disconnect the positive lead from the battery. 5.Place the DVM in series with the positive lead and the positive connection of the battery. 6.Reconnect the Negative lead to the battery. If you see any current registered on the DVM , then something is drawing power, what you need to do then is to locate the fuse box in the engine bay, and starting from a point remove a fuse and see if it makes a difference to the amoung of current being drawn (i.e the amount being displayed drops close to zero), if it doesnt place the fuse back in its location and move on to the next one. Good luck mate. Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted July 24, 2006 Share Posted July 24, 2006 Mate do the following, 1.Get a Digital multimeter. 2.Set it to to read current (Ampere), you may need to adjust the DVM to read within range. 3.Disconnect the negtaive lead to the battery. 4.Disconnect the positive lead from the battery. 5.Place the DVM in series with the positive lead and the positive connection of the battery. 6.Reconnect the Negative lead to the battery. If you see any current registered on the DVM , then something is drawing power, what you need to do then is to locate the fuse box in the engine bay, and starting from a point remove a fuse and see if it makes a difference to the amoung of current being drawn (i.e the amount being displayed drops close to zero), if it doesnt place the fuse back in its location and move on to the next one. Good luck mate. Whilst doing the above, make sure all the doors a properly shut and the keys out of the car. When you first re-connect the battery, I'd expect a few small surges as some of the ECU's come to life, (or maybe even large ones if you have an alarm on there), but after about a minute, you should have a nice low stable reading. Probably in the region of about 0.01 to 0.02 amps. this will fluctuate if an alarm or stereo has flashing led's Quote Link to comment Share on other sites More sharing options...
piehound Posted July 25, 2006 Share Posted July 25, 2006 take a look in the boot you may have knocked the light on i did in my astra but only found it when i took the parcel shelf out Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted July 25, 2006 Share Posted July 25, 2006 take a look in the boot you may have knocked the light on i did in my astra but only found it when i took the parcel shelf out You can't do that in a Supra. The boot light switch either turns it off completely, or switches it on to work when the tailgate is open. Quote Link to comment Share on other sites More sharing options...
Big Ads Posted July 25, 2006 Share Posted July 25, 2006 i had this problem a few weeks ago, even tho i kept charging the battery up, it was only filling up 15% get it tested at any car place. Quote Link to comment Share on other sites More sharing options...
Soop Dogg Posted July 25, 2006 Share Posted July 25, 2006 Mate do the following, 1.Get a Digital multimeter. 2.Set it to to read current (Ampere), you may need to adjust the DVM to read within range. 3.Disconnect the negtaive lead to the battery. 4.Disconnect the positive lead from the battery. 5.Place the DVM in series with the positive lead and the positive connection of the battery. 6.Reconnect the Negative lead to the battery. When doing this, set the multimeter to the highest amp range BEFORE connecting it. (i.e. if it has a 10A range and a 1A range, set it to the 10A range) Quote Link to comment Share on other sites More sharing options...
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