2005 Mustang GT Dead Battery
#101
Turn everything off... remove key...
Disconnect the Power Cable from the Battery.. then put an AMP/Volt meter on the + post and the Power Cable.. see if your car is drawing juice and how much.
It will draw a little... the clock for the radio... Memory store function of the computer.. but it should be VERY low Amps...
Disconnect the Power Cable from the Battery.. then put an AMP/Volt meter on the + post and the Power Cable.. see if your car is drawing juice and how much.
It will draw a little... the clock for the radio... Memory store function of the computer.. but it should be VERY low Amps...
there. A smaller 1A battery tender cant overcome the 1.5A parasitic draw
of the S197 stang. I went to a 2A cyclic charger that goes up to 13.5V
and then shuts off and stays off until the battery voltage reaches 12.3V
and then the 2A charger comes back on again until the battery reaches
13.5V again. After 15 of these cycles, the charger then requires the battery
to reach about 15V before shutting off to help equalize the cells.
Just a few Op-Amps, some 15 turn 10K pots, couple of diodes and
a binary ripple counter and you are in the busisness of S197 battery
maintence....
Last edited by 157dB; 08-29-2009 at 10:01 AM.
#103
After 45 minutes of having all electrical accessories turned off, the parasitic draw should not exceed 50 MILLIAMPS.
#104
Here's an update on my Mustang 2008 dead battery story...over the weekend I pulled both the Shaker fuse & Fog Light relay which, according to this thread, are the main causes for the battery draw. Battery was 100% charged indicating 13.1 volts...after just 12 hours...battery had only 12.3 volts left over and indicator showed 65%. I am sure that after two days the battery would be dead again. My conclusion is that in my case, it can't be the Shaker nor the Fog Lights relay ? Drove it to the dealership this morning again. I wonder what they will do now. To be continued...
#105
More of the same
Just starting my 3rd year of ownership of my 07 v6 (NO SHAKER).Bought the car from a NJ dealership.Battery was flat then,but accepted the vehicle had been standing.When the car arrived in Southampton Docks,battery was flat.
If the car is not used every two days the battery will be fully discharged.A replacement more superior battery has been fitted...no suprises here...still dead after two days.
Dealership advice,as unable to access electricity in my garage,is to disconnect the battery after each journey!.It does seem amazing that such a widespread problem,after 4years,remains a mystery.How I lament the passing of my 91 Mustang,17 years without one hiccup!!.Certainly payback time for me now!!!
Anyone who solves my problem will get a free tour of London + beer (providing I can get the car started).Rise to the challenge lads!
If the car is not used every two days the battery will be fully discharged.A replacement more superior battery has been fitted...no suprises here...still dead after two days.
Dealership advice,as unable to access electricity in my garage,is to disconnect the battery after each journey!.It does seem amazing that such a widespread problem,after 4years,remains a mystery.How I lament the passing of my 91 Mustang,17 years without one hiccup!!.Certainly payback time for me now!!!
Anyone who solves my problem will get a free tour of London + beer (providing I can get the car started).Rise to the challenge lads!
#106
my battery just took the final $hit on me. so i go to replace it. the long screw holding down the plastic securing piece is corroded, and so it snaps when i go to unscrew it. the battery is now stuck in the tray......dead. after three @@@##$$$%ing hours, i finally manage to wriggle the bastard free. now i go to remove the tray..... all three srew heads are so rusted out i cannot get them turned without shearing what's left of the metal off. so here i sit 4 days after the original dead battery, it's raining out, and i can't get my car done. i have never wanted to set fire to something so bad.
#108
Just starting my 3rd year of ownership of my 07 v6 (NO SHAKER).Bought the car from a NJ dealership.Battery was flat then,but accepted the vehicle had been standing.When the car arrived in Southampton Docks,battery was flat.
If the car is not used every two days the battery will be fully discharged.A replacement more superior battery has been fitted...no suprises here...still dead after two days.
Dealership advice,as unable to access electricity in my garage,is to disconnect the battery after each journey!.It does seem amazing that such a widespread problem,after 4years,remains a mystery.How I lament the passing of my 91 Mustang,17 years without one hiccup!!.Certainly payback time for me now!!!
Anyone who solves my problem will get a free tour of London + beer (providing I can get the car started).Rise to the challenge lads!
If the car is not used every two days the battery will be fully discharged.A replacement more superior battery has been fitted...no suprises here...still dead after two days.
Dealership advice,as unable to access electricity in my garage,is to disconnect the battery after each journey!.It does seem amazing that such a widespread problem,after 4years,remains a mystery.How I lament the passing of my 91 Mustang,17 years without one hiccup!!.Certainly payback time for me now!!!
Anyone who solves my problem will get a free tour of London + beer (providing I can get the car started).Rise to the challenge lads!
Also, it is possible that the replacement battery is bad.
Has the alternator been tested?
#109
P.O.S. battery bull$hit!!!!!