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Car Knowing Stuff Type Guys.......

 
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stroh
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Car Knowing Stuff Type Guys.......
« on: June 16, 2007, 08:29:43 AM »

My Mustang has 'lectercal issues.

I plan to take it in, and have a mechanic go through it to find out exactly what my problem is.  (I'm pretty sure I have a short somewhere, that is constantly draining the battery.)  I charge it up, or jump it, every thing is fine, but when it sits over night (even after running all day) deader than a hammer.  New alternator last year, and new cables.

So I guess here is my question. 

A.  Do I buy a new battery?  I ask, because I don't want to sink the 80 bones, if the guy finds the problem, and it's an easy fix.  I have no idea of the age of the battrie, but it looks "fairly" new, and is clean.

B.  The reason I ask, is because I have heard that if you have a batterary run down dead too many times, you can essentially  "kill" it.  Is this a myth?  Could it be that I simply have a ruined battery, and potentially no "drain" at all?


Muchos Garcias.
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Uisce Beatha
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Re: Car Knowing Stuff Type Guys.......
« Reply #1 on: June 16, 2007, 08:34:59 AM »

sink the 80 bones

Salty Seven Marathon.
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"If you're darker than a caramel, Reverend Al speaks for you." - Aasif Mandvi
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stroh
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Re: Car Knowing Stuff Type Guys.......
« Reply #2 on: June 16, 2007, 08:41:26 AM »

sink the 80 bones

Salty Seven Marathon.

I wish.  It's been more like SLC.
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spacey
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Re: Car Knowing Stuff Type Guys.......
« Reply #3 on: June 16, 2007, 09:38:38 AM »

Sorry, I only know enough to be dangerous. If anyone here wants to know how to put a K&N air intake on a MINI Cooper, I can help out and probably save a couple of really aggravating steps I had to figure out the hard way (30 minute install, my ass). Other than that, all I really know how to do is fill the gas tank.
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gleek
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E chu ta!

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Re: Car Knowing Stuff Type Guys.......
« Reply #4 on: June 16, 2007, 09:39:38 AM »

My Mustang has 'lectercal issues.

I plan to take it in, and have a mechanic go through it to find out exactly what my problem is.  (I'm pretty sure I have a short somewhere, that is constantly draining the battery.)  I charge it up, or jump it, every thing is fine, but when it sits over night (even after running all day) deader than a hammer.  New alternator last year, and new cables.

So I guess here is my question. 

A.  Do I buy a new battery?  I ask, because I don't want to sink the 80 bones, if the guy finds the problem, and it's an easy fix.  I have no idea of the age of the battrie, but it looks "fairly" new, and is clean.

B.  The reason I ask, is because I have heard that if you have a batterary run down dead too many times, you can essentially  "kill" it.  Is this a myth?  Could it be that I simply have a ruined battery, and potentially no "drain" at all?


Muchos Garcias.

Dude, take your battery to Checker and they'll test it for you. A brand new battery can go dead and lose its capacity after several weeks if you don't run the engine during that time.
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Clive
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Re: Car Knowing Stuff Type Guys.......
« Reply #5 on: June 16, 2007, 10:57:54 AM »

So I guess here is my question. 

A.  Do I buy a new battery?  I ask, because I don't want to sink the 80 bones, if the guy finds the problem, and it's an easy fix.  I have no idea of the age of the battrie, but it looks "fairly" new, and is clean.

B.  The reason I ask, is because I have heard that if you have a batterary run down dead too many times, you can essentially  "kill" it.  Is this a myth?  Could it be that I simply have a ruined battery, and potentially no "drain" at all?
The mechanic should be able to do his work without a new battery installed.  Why not see how that goes first?  If it's the battery (alone or impeding his diagnosin'), I'm betting he can figure that one out.


If anyone here wants to know how to put a K&N air intake on a MINI Cooper, I can help out and probably save a couple of really aggravating steps I had to figure out the hard way (30 minute install, my ass).
Thanks, I'll call you if I feel like scuffing up my wedding band.
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campy
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Re: Car Knowing Stuff Type Guys.......
« Reply #6 on: June 16, 2007, 06:21:15 PM »

You should hook up a multi-meter to see if your alternator is charging when your car is running.(there should be around 14.7 volts after the battery has been somewhat recharged...higher voltage, over a longer time means the alternator is working, but the battery is not accepting the charge)   Put your battery on a charger, and see if it will take and hold a complete charge before replacing also. 

Alternatively, hook a multi-meter to the battery after running the vehicle for awhile, and see if battery voltage is dropping significantly, if it is, there is either something draining it, or there is short somewhere, or your battery is shot.
« Last Edit: June 16, 2007, 06:23:05 PM by campy » Logged Return to Top
stegerman
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Re: Car Knowing Stuff Type Guys.......
« Reply #7 on: June 16, 2007, 07:11:10 PM »

You should hook up a multi-meter to see if your alternator is charging when your car is running.(there should be around 14.7 volts after the battery has been somewhat recharged...higher voltage, over a longer time means the alternator is working, but the battery is not accepting the charge)   Put your battery on a charger, and see if it will take and hold a complete charge before replacing also. 

Alternatively, hook a multi-meter to the battery after running the vehicle for awhile, and see if battery voltage is dropping significantly, if it is, there is either something draining it, or there is short somewhere, or your battery is shot.

What he said.

Did I sound like I knew what I was talking about?
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MFAWG
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Re: Car Knowing Stuff Type Guys.......
« Reply #8 on: June 17, 2007, 01:05:12 AM »

Buy a battery before aggravating your friend the mechanic with something that's fairly obvious.

The clue here is that the car is 'Fine' if it's running off the alternator. The alternator will maintain a battery, but it won't recharge one, and only God can bring one back to life that loses it's cranking amperage from sitting overnight.

Soooo, the alternator is fine (checking it won't hurt, but I'd guess the $7.03 for 22 hours a week kid at Checkers has no more idea how to check it than you do), and the battery is probably toast.

If the voltmeter hooked to the battery reads anything under 8.5 with the car off, it's done for sure, and anything under 10 and over 4 or 5 years old probably is too.

« Last Edit: June 17, 2007, 01:11:08 AM by MFAWG » Logged Return to Top

The things that will destroy America are prosperity at any price, peace at any price, safety first instead of duty first, the love of soft living and the get rich quick theory of life. -- Teddy Roosevelt
MFAWG
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Re: Car Knowing Stuff Type Guys.......
« Reply #9 on: June 17, 2007, 01:07:30 AM »

PS: Check for fairly obvious *feces* like corrosion around the terminals and loose connections as well...

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The things that will destroy America are prosperity at any price, peace at any price, safety first instead of duty first, the love of soft living and the get rich quick theory of life. -- Teddy Roosevelt
stroh
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Re: Car Knowing Stuff Type Guys.......
« Reply #10 on: June 17, 2007, 06:58:17 AM »

Awesome.  Thank you. Cool
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MFAWG
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Re: Car Knowing Stuff Type Guys.......
« Reply #11 on: June 17, 2007, 07:46:44 AM »

Is Nukular power what makes Lectercal appliances work?  Grin

I didn't put my usual disclaimer on it, but then again this one is fairly obvious...

Just for my own piece of my mind:

What year is the car, and if the battery says 'Motorcraft' on it, it's probably the one that came with it.

FWIW, 80 bones may be a tad steep for a battery, but batteries really are one of those things where you get what you pay for.

We've been an Interstate dealer for years, although that probably has as much to do with being Joe Gibbs Racing kind of guys as much as anything.

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The things that will destroy America are prosperity at any price, peace at any price, safety first instead of duty first, the love of soft living and the get rich quick theory of life. -- Teddy Roosevelt
stroh
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Re: Car Knowing Stuff Type Guys.......
« Reply #12 on: June 17, 2007, 07:54:02 AM »

Is Nukular power what makes Lectercal appliances work?  Grin


 Laughing

Should have put that in the OP.  '67, 289.  No AC.  Can't remember the name of the battery, but it's def. not original.

Yeah, I thought 80 is a little steep too, but I was guessing high.

The alternator is new from last year(by me.  My first attempt to "fix" what was wrong.  Next was new cables.  Still nothing.)

I'll buy a new battery.


[small disclosure] Would sparks flying out from under the horn bezel when it's pressed, have any contribution to global problem?  Anonymous


Joe Gibbs Racing! Thumbs Up
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MFAWG
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Re: Car Knowing Stuff Type Guys.......
« Reply #13 on: June 17, 2007, 08:03:40 AM »

They make a switch deal (that's a technical term, sonny)  that will disconnect the battery if the car sits alot to keep the draw off of it to a minimum.

Perfect for seldom used RV's and collector cars.

 
Quote
Would sparks flying out from under the horn bezel when it's pressed, have any contribution to global problem?


Gee, ya think?  Grin

One more thing: Vintage Ford's have an external voltage regulator, did you change that when you changed the alternator? If it goes bad, the alternator will actually overcharge the battery and kill it just as dead as if the alternator wasn't charging at all.

Should be on the fenderwall just behind the battery. They're about 20 bucks, and since you'll be right there anyway...


« Last Edit: June 17, 2007, 08:07:30 AM by MFAWG » Logged Return to Top

The things that will destroy America are prosperity at any price, peace at any price, safety first instead of duty first, the love of soft living and the get rich quick theory of life. -- Teddy Roosevelt
twoiron
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Re: Car Knowing Stuff Type Guys.......
« Reply #14 on: June 17, 2007, 08:05:16 PM »

I always wanted a Mustang
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