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How long does it take for the GEM to go into sleep mode?

Discussion in 'Road Side Pub' started by PC PaiN, Mar 17, 2010.

  1. PC PaiN

    PC PaiN Member Established Member

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    Just as the title says. Hunting down a draw in my 2001 Bullitt daily driver but I wanted to see how long it takes the car to go into sleep mode. Still sitting at about 145 milliamp draw right now. Been about 20 minutes or so.
     
  2. autotrix

    autotrix New Member Established Member

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    I wish I could remember exactly...but i thinks its around 30-50 minutes. I will say that the ford GEM modules do have a track record for needing to be replaced for voltage drain issues. Good luck, and let us know how everything works out.
     
    Last edited: Mar 17, 2010
  3. PC PaiN

    PC PaiN Member Established Member

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    Took about 45 minutes and she went to sleep.
     
  4. fiveoh2go

    fiveoh2go Cleveland's OG Established Member

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    2 random questions: What exactly happens when the car goes into "sleep mode" and what would "awaken" the car from sleep mode?
     
  5. 99MustangGTman

    99MustangGTman 2VORNOT2V Established Member

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    I'd like to know this as well.
     
  6. fiveoh2go

    fiveoh2go Cleveland's OG Established Member

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    Off topic, but dude your car looks tough in your sig pic. :coolman:
     
  7. PC PaiN

    PC PaiN Member Established Member

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    I don't know exactly what all it means I just know that when trying to find a parasitic drain on the battery you have to put your meter in line with one of the battery cables. When you unhook it and then put the meter in line with it and hook it back up the GEM "wakes up" and you have to wait for it to "goto sleep" to get your readings
     
  8. PC PaiN

    PC PaiN Member Established Member

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    Now if someone can help me on my drain. I tested first with the radio fuse pulled because I'm convince it's something in the mach 460 killing my battery. With that fuse pulled I believe I was having about a 8 ma draw if I was reading the meter right. When I put the fuse back in it blows my meter. I'm on my third fuse on my meter before pulling the radio fuse back out and bam my meter doesn't blow this time. Something on that radio fuse circuit is jacked up.

    Does anyone know how to track this down exactly? I've been in contact with a guy I found on a forum that had the same problem and come to find out the Mach 460 headunit was the problem. I have also heard the amps can cause a drain, however I hear the amps are on a different fuse which I don't see listed in my owners manual.
     
  9. PC PaiN

    PC PaiN Member Established Member

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    BTW this is a 2001 Mustang Bullitt with the Mach 460 system in it.

    And to verify that I read the meter right, it was set on 200ma. Before the GEM went to sleep it was reading 150.XX and I believe after it went to sleep it read 8.XX This is 8MA correct? Which is well within spec. I have no idea what it registers with the radio fuse in since it blows my meter everytime.
     
  10. 99MustangGTman

    99MustangGTman 2VORNOT2V Established Member

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    Thanks man! I finally got the stance down right!


    Back on topic, I have a similar problem with a drain, if the car sits more than a week the battery is dead. Hopefully someone can chime in with an answer.
     
  11. 65fastback2+2

    65fastback2+2 Active Member Established Member

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    shake the mouse or punch any key
     
  12. PC PaiN

    PC PaiN Member Established Member

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    Mach 460 system in yours as well?
     
  13. BLK03SVT10TH

    BLK03SVT10TH Mods? What Mods?? Established Member

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    +1 My 2004 Cobra has a battery drain issue as well and I've been trying to figure it out.
     
  14. PC PaiN

    PC PaiN Member Established Member

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    BTW just in case I didn't say, the fuse in question is #27 under the dash. I'm not sure what all exactly ties into that circuit
     
  15. fiveoh2go

    fiveoh2go Cleveland's OG Established Member

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    :??:
     
  16. PC PaiN

    PC PaiN Member Established Member

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    You know what's amazing is how many people have this issue and don't really care. Either they know about it and just drive the car often enough not to worry about it, or they use a tender if they don't drive it for a day.

    Lot's of threads about this all over message boards and like no one ever posts up a damn fix
     
  17. thomas91169

    thomas91169 # of bans = 5203 Established Member

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    nailed it on the head.

    either driven daily, or on the weekends.

    though most my vehicles would lose battery charge after sitting for more than a few days, so its not just a mustang thing. ive replaced alts, batteries, grounds, etc.
     
  18. PC PaiN

    PC PaiN Member Established Member

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    My lightning can sit for 2+ months and fire right up. Original battery in it and it's a 2003.

    My bullit is 2 days TOPS without driving it and shes dead as hell, new battery, old battery, don't make a damn
     
  19. 99MustangGTman

    99MustangGTman 2VORNOT2V Established Member

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    Yes.
     
  20. harry gilbert

    harry gilbert Diehard Ford Fan Established Member

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    I have LoJack anti-theft device in my 2002 GT and 2003 Cobra, and both must stay on a trickle charger, or they drain the battery in about 2 weeks. The dealer confirmed that (in my case) it is caused by the LoJack device.
     

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