Car starts and dies now after battery drained dead...
#1
Car starts and dies now after battery drained dead...
So my 84 vette LS1/T56 conversion has been slow, but the other day I drove it for the first time in a year... guess what? The power seat switches were dangling and got wedged to the "ON" position. When the car was shut off the power seat drained my optima battery to 0v...and I mean 0v. Checked with my fluke and it didn't even read mV, just Ohms...
I recharged it, started her up, let it run until reaching operating temp and I shut it off. Everything seemed peachy until i tried to start it up 30 min later. It fires up for half a second to a second and shuts off. This happens over and over unless I disconnect the battery for 5-15 min and then try. If i do that it will start the first time upon connecting the battery again. WTF? I'm not getting the check engine light so no codes are being thrown (i guess). I have fuel pressure, all relays and fuses are good etc.
I'm at a loss here. Is there someing in the pcm that can get "goofy" if the battery is drained slowly to null? Is there a battery or something in the PCM that will drain due to the actual car battery draining to 0v? The PCM has a tune on it and never had ANY issues until that damn power seat switch got me.
Any help would be greatly appreciated everyone.
Thanks,
Scott
I recharged it, started her up, let it run until reaching operating temp and I shut it off. Everything seemed peachy until i tried to start it up 30 min later. It fires up for half a second to a second and shuts off. This happens over and over unless I disconnect the battery for 5-15 min and then try. If i do that it will start the first time upon connecting the battery again. WTF? I'm not getting the check engine light so no codes are being thrown (i guess). I have fuel pressure, all relays and fuses are good etc.
I'm at a loss here. Is there someing in the pcm that can get "goofy" if the battery is drained slowly to null? Is there a battery or something in the PCM that will drain due to the actual car battery draining to 0v? The PCM has a tune on it and never had ANY issues until that damn power seat switch got me.
Any help would be greatly appreciated everyone.
Thanks,
Scott
#3
12 Second Club
iTrader: (4)
Just went through the same problem basically. Cliffs Notes: buy a CTEK 7002 Battery charger, it fixed everything!.
1.Optima need a special type of battery charger (AGM)
2. The CTEK 7002 has a battery recondition feature that needed on Optimas that go below 10.5V
http://www.youtube.com/watch?v=Givgz4mtwZI
1.Optima need a special type of battery charger (AGM)
2. The CTEK 7002 has a battery recondition feature that needed on Optimas that go below 10.5V
http://www.youtube.com/watch?v=Givgz4mtwZI
#4
Its been a while but i'm back....I'm not understanding how the battery charger is going to fix this issue... the battery holds a 12.**V charge now, but after I start the car and shut it off once it will just crank and crank and crank any time after but doesn't fire. Is there a battery inside the PCM that does something?
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#8
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ran into a similar problem with a neighbors car just the other day. can you keep the car running with some pedal input? if so I would try to drive the car around a little bit to see if the pcm can get into closed loop to help learning exactly what the motor might need as far as fueling and air.
#9
ran into a similar problem with a neighbors car just the other day. can you keep the car running with some pedal input? if so I would try to drive the car around a little bit to see if the pcm can get into closed loop to help learning exactly what the motor might need as far as fueling and air.