battery issue - Team Camaro Tech
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post #1 of 25 (permalink) Old Sep 5th, 11, 12:01 PM Thread Starter
Rich
 
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Red face battery issue

once again i turn to my fellow camaro owners,

i am having a problem with my battery not being able to turn over my car.
i have an optima red top in my camaro with 10 to 1 compression.
the problem i have is that after two weeks of not starting my car i went out yesterday and it started right up then i drove my car for about 45 minutes and the voltage guage says its charging right at 14 volts then last night the wife wanted to go for a ride so i went into the garage and car would not start so i hooked up my battery charger to it and it immediately started up no problem, so my question is.
Is the battery not strong enough or could it be not a strong enough starter to spin the motor.

any help would be great
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post #2 of 25 (permalink) Old Sep 5th, 11, 12:46 PM
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Re: battery issue

Rich,

Could you go into detail about what goes on during the non start. For example do you get a click when you turn the key or, is it slow cranking or, a good crank then stops (timing too far advanced) or, nothing at all when the key is turned

If the Red Top is in good shape, it is plenty strong enough. Try a load test on the battery to be sure.

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post #3 of 25 (permalink) Old Sep 5th, 11, 01:05 PM
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Re: battery issue

I have gone thru three red tops this year alone....although partial to a faulty voltage regulator...haha.....but still two of the red tops did go bad and were replaced at little or no charge....take it to the store it was purchased from and have em test it....if bad it should be replaced at little or no cost depending on how long you have had it.....but....if it tests good then start the trouble shooting......or if you have a volt meter check to see where voltage is before, during and after start up (if it starts)....and submit more info

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post #4 of 25 (permalink) Old Sep 5th, 11, 01:38 PM Thread Starter
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Re: battery issue

when i go to start car fuel pump and electric fans turn on in ignition then when you turn key to start position everything stays on but starter does not turn as if starter was disconnected but the minute i add any extra power (jump start, hook up charger or booster box) car starts right up.
also battery has 12volts when tested but drops down to 10.5-11 when trying to start. have not load tested battery yet will do that today, also forgot to mention that i am running a gm 1 wire alternator if that matters.

Thanks again for the help
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post #5 of 25 (permalink) Old Sep 5th, 11, 01:39 PM
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Re: battery issue

AGM batteries take longer to recharge than a lead acid battery after sitting for some time.
If recharging an AGM from sitting, you have parallel charge a standard battery along with an AGM to get the AGM to recharge. You have to use an AGM everyday to make it work. Swap batteries with your daily driver and compare results.

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post #6 of 25 (permalink) Old Sep 5th, 11, 02:42 PM
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Re: battery issue

Do not mix battery types between the 2 charging systems...they have different charging rates/voltages and early baterry failure occurs...1 batery gets over charged the other under charged.
This is becoming a common occurance down the work shop with people simply buying a battery off the shelf.

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post #7 of 25 (permalink) Old Sep 5th, 11, 02:56 PM
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Re: battery issue

I assume all the grounds are good ?

I had an issue with mine just cutting off...would crank great...just no fire...found the battery ground loose at block

Could be a similar issue

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post #8 of 25 (permalink) Old Sep 5th, 11, 03:46 PM
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Re: battery issue

Quote:
Originally Posted by Everett#2390 View Post
AGM batteries take longer to recharge than a lead acid battery after sitting for some time.
If recharging an AGM from sitting, you have parallel charge a standard battery along with an AGM to get the AGM to recharge. You have to use an AGM everyday to make it work. Swap batteries with your daily driver and compare results.
the only time I've ever needed to put a battery in parrallel is if the AGM is way down- like 5 volts or below. Anything with 10 volts or more they have always taken a charge fine through normal methods. If the charger is showing an AGM is taking a charge, there's no reason to fool it with the parrallel battery method, and if you do need to it doesn't matter what type of battery you use, just something to get it charging, then take it off the parrallel battery in a couple hours.

That said, unless you left something on and drained it - I would be looking at the battery terminal connections first from what you have described, then the ground and the starter postive post to make sure it's all good with no problems. Really need more details on what it does when you try to start it and the battery voltage to help though.

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post #9 of 25 (permalink) Old Sep 5th, 11, 04:42 PM
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Re: battery issue

Check your voltage regulator also to make sure you are charging correctly.

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post #10 of 25 (permalink) Old Sep 24th, 11, 08:51 AM
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Re: battery issue

My red top Optima gave me the first trouble I've ever had with it in 5 years. I live in Austin; I see you're in SA. I believe my problem was short trips to / from work combined with endless summer heat. I had another red top sitting in the garage and swapped it out. The sick one charged just fine, but I have yet to see if it recovered well enough to use. Perhaps that will be on my list of things to do today.

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post #11 of 25 (permalink) Old Sep 24th, 11, 09:06 AM
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Re: battery issue

I'm a non AGM fan. Lead-acid is what this charging system was designed around and IMHO its asking for trouble to go with a slower charging rate AGM.

You have also put an additional draw with the cooling fans - Why are they not on a thermostatic relay and only on when cooling is needed?

I would also clean all contacts and grounds as it does sound like not enough voltage is hitting the starter to kick it in.

When you converted to one wire - internal or external VR?


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post #12 of 25 (permalink) Old Sep 24th, 11, 01:57 PM
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Re: battery issue

Quote:
I'm a non AGM fan. Lead-acid is what this charging system was designed around and IMHO its asking for trouble to go with a slower charging rate AGM.
Like I said above the 2 types of batteries have different charging levels...not time but voltage...If u have a lead acid system stick with lead acid batytery and visa versa...
THE 2 ARE NOT INTERCHANGEABLE
One undercharges and the other over charges both result in stuff batteries

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post #13 of 25 (permalink) Old Sep 24th, 11, 07:24 PM
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Re: battery issue

AGM batteries are lead and acid - they just have the acid tied up in an AGM mat between the lead plates instead of in a liquid state. The only real difference between many AGM batteries and a wet cell battery besides the suspended acid in the mat is a generally higher purity of lead plate. Optimas are a spiral cell AGM battery with the lead plate wound into a coil with the acidic mat in between the layers and with these you do have to be careful to not add too much voltage or it will burn the material and ruin it because the distance between the plates in the spiral is closer. Any system with a good regulator will not damage an Optima. Regular flat plate AGM batteries are not prone to damage from higher voltage more so than a wet cell battery. AGMs actually charge much more quickly than a wet cell battery because they have less internal resistance, and they are also capable of a higher rate of discharge (deliver more power) at lower states of charge than a wet cell. On my trolling batteries which are AGMs, I can run them all day hard in a high wind and they do not fade a bit. They also charge up in about half the time a wet cell does. Wet cells and half way through the day I will start losing power. On a Gen 1 Camaro with a properly working charging system there's absolutely no reason to avoid using an AGM battery and plenty of reason's too use them.

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post #14 of 25 (permalink) Old Sep 24th, 11, 08:08 PM
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Re: battery issue

I also went thru 2 red tops and finally got a auto zone gold series. That died on me too due to a bad cell, but in tracing out the problem came to be a bad horn relay that was shorting out. Still running that auto gold series with no problems its been 8 months
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post #15 of 25 (permalink) Old Sep 25th, 11, 01:27 AM
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Re: battery issue

Have the battery tested.
Can you hear the starter solenoid click when cranked?

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