1979 Battery Problem--need some help
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
You know E = 12.2 VDC (common fully charged battery voltage)
You Know R = 5.3 Ohms
I = E/R E 12.2 VDC / R 5.3 = I 2.30189 amps
Thats a LOT more current draw than it should be. You should be drawing milliamps 0.02 amps
Thread Starter
Drifting
Joined: Jun 2006
Posts: 1,327
Likes: 43
From: Vernon CT
Heres the formula with the answer that you need. E= I X R
You know E = 12.2 VDC (common fully charged battery voltage)
You Know R = 5.3 Ohms
I = E/R E 12.2 VDC / R 5.3 = I 2.30189 amps
Thats a LOT more current draw than it should be. You should be drawing milliamps 0.02 amps
You know E = 12.2 VDC (common fully charged battery voltage)
You Know R = 5.3 Ohms
I = E/R E 12.2 VDC / R 5.3 = I 2.30189 amps
Thats a LOT more current draw than it should be. You should be drawing milliamps 0.02 amps
Do you have an English version of that?
And where do I start?
Steve
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Your drawing 2+ amps at rest where you should be drawing almost nothing.
Like I stated earlier,,,C1,2 and 3 are easy. You can hook up your ohm meter to the disconnected battery leads and pull fuses ONE AT A TIME until the 5 ohm reading drops to zero. Then you find what in that circuit is drawing current.
If it were me,,,,,
,,,,,I would start at the alternator. DISCONNECT the BATT wire on the back of the alternator and see if you still have the 5 ohms.
If not,,,,,Then go for the fuses.
BC
Like I stated earlier,,,C1,2 and 3 are easy. You can hook up your ohm meter to the disconnected battery leads and pull fuses ONE AT A TIME until the 5 ohm reading drops to zero. Then you find what in that circuit is drawing current.
If it were me,,,,,
,,,,,I would start at the alternator. DISCONNECT the BATT wire on the back of the alternator and see if you still have the 5 ohms.If not,,,,,Then go for the fuses.
BC
Thread Starter
Drifting
Joined: Jun 2006
Posts: 1,327
Likes: 43
From: Vernon CT
Your drawing 2+ amps at rest where you should be drawing almost nothing.
Like I stated earlier,,,C1,2 and 3 are easy. You can hook up your ohm meter to the disconnected battery leads and pull fuses ONE AT A TIME until the 5 ohm reading drops to zero. Then you find what in that circuit is drawing current.
If it were me,,,,,,,,,,I would start at the alternator. DISCONNECT the BATT wire on the back of the alternator and see if you still have the 5 ohms.
If not,,,,,Then go for the fuses.
BC
Like I stated earlier,,,C1,2 and 3 are easy. You can hook up your ohm meter to the disconnected battery leads and pull fuses ONE AT A TIME until the 5 ohm reading drops to zero. Then you find what in that circuit is drawing current.
If it were me,,,,,
,,,,,I would start at the alternator. DISCONNECT the BATT wire on the back of the alternator and see if you still have the 5 ohms.If not,,,,,Then go for the fuses.
BC
Note: I did get a new Alt on ebay. Its on the way..
Thanks Bill.
Thread Starter
Drifting
Joined: Jun 2006
Posts: 1,327
Likes: 43
From: Vernon CT
Update: Now the car dies after I start it and disconnect the battery.
So I installed a new alternator and viola the car started fine and guess what? I left the battery connected overnight (which I previously couldn't do) and it was NOT dead the next day.
Rebuilt Alt= problem solved... Thanks to all!!
Next: solving the elusive water firewall leak on both passenger and driver sides. Grrrr
So I installed a new alternator and viola the car started fine and guess what? I left the battery connected overnight (which I previously couldn't do) and it was NOT dead the next day.
Rebuilt Alt= problem solved... Thanks to all!!
Next: solving the elusive water firewall leak on both passenger and driver sides. Grrrr
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Update: Now the car dies after I start it and disconnect the battery.
So I installed a new alternator and viola the car started fine and guess what? I left the battery connected overnight (which I previously couldn't do) and it was NOT dead the next day.
Rebuilt Alt= problem solved... Thanks to all!!
Next: solving the elusive water firewall leak on both passenger and driver sides. Grrrr
So I installed a new alternator and viola the car started fine and guess what? I left the battery connected overnight (which I previously couldn't do) and it was NOT dead the next day.
Rebuilt Alt= problem solved... Thanks to all!!
Next: solving the elusive water firewall leak on both passenger and driver sides. Grrrr
My recommendation would be to pull the carpet and trim, get a flashlight and GET ER DONE! Good luck!
BC
Thread Starter
Drifting
Joined: Jun 2006
Posts: 1,327
Likes: 43
From: Vernon CT
The flashlight gig didnt work cause the leak is somewhere (on the sides) near or passed the top dome looking thing. Its coming from the sides. On the drivers side it leaks onto the clutch pedal.
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Glad the car works to the op, good luck with the water.
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
Update: Now the car dies after I start it and disconnect the battery.
So I installed a new alternator and viola the car started fine and guess what? I left the battery connected overnight (which I previously couldn't do) and it was NOT dead the next day.
Rebuilt Alt= problem solved... Thanks to all!!
Next: solving the elusive water firewall leak on both passenger and driver sides. Grrrr
So I installed a new alternator and viola the car started fine and guess what? I left the battery connected overnight (which I previously couldn't do) and it was NOT dead the next day.
Rebuilt Alt= problem solved... Thanks to all!!
Next: solving the elusive water firewall leak on both passenger and driver sides. Grrrr
