Charging Issue

[LTb1ow]

Ok, LT1, stock alternator, and a CSR EWP.

When I am drving at night and or in the rain, the battery dies pretty bad.

The EWP is hooked up with a relay and what not, haven't added any aftermarket radio nonsense.

I drove from exit 105 to 88 and then back, and even after that, when I would idle the voltage would nose dive. IDK about other PCMs, but LT1s do not like low voltage, makes for horrible idleing.

Any ideas?

Maybe a dead alternator? The battery is newish, last summer brand new.

[Featherburner]

How many volts is the alternator putting out at idle? with some rpm?

[WildBillyT]

Stock pullies?

[LTb1ow]

Yea all stock pullies, and I only did a basic test of the alternator, found voltage on battery with engine off, and then with it on. Seems to be a difference of around a volt or two.

But idle is all over, usually around 600-700ish, but thats not a concern cause I drove a long time at 3k rpm and idled for no more than 5 minutes.

I could check the voltage output at differing rpm with a voltmeter correct?

[Featherburner]

Yea all stock pullies, and I only did a basic test of the alternator, found voltage on battery with engine off, and then with it on. Seems to be a difference of around a volt or two.

But idle is all over, usually around 600-700ish, but thats not a concern cause I drove a long time at 3k rpm and idled for no more than 5 minutes.

I could check the voltage output at differing rpm with a voltmeter correct?
Yes.
What voltage does the battery have with the car off?

[LTb1ow]

Around 12.

I will try tonight when I get home if I can dig out my voltmeter.

[Featherburner]

Should be about 13.5

[LTb1ow]

I will check it again tonight.

I dunno whether a battery or alternator would be cheaper to replace.... Ugh/

[Formulalt1]

Should be about 13.5
You must have one hell of a good battery. Mine reads between 11.5 and 12.0 with the car off. Is this a 93 or 94 LT1?.

[LTb1ow]

My car is a 95.

And as posted in the other thread, I have like 14 at idle, 12 ish just battery

[sweetbmxrider]

maybe you have a bad cell since you don't HAVE A FUGGING MOUNT!!!! vibration kills batteries....

[BonzoHansen]

You must have one hell of a good battery. Mine reads between 11.5 and 12.0 with the car off. Is this a 93 or 94 LT1?.
At the battery? Then your battery is undercharged.


Shownomercy, I really think you need to go through that car and make sure every ground is good. Clean, star washers, etc.

[Formulalt1]

At the battery? Then your battery is undercharged.


Shownomercy, I really think you need to go through that car and make sure every ground is good. Clean, star washers, etc.
I guess that is slightly on the low side but thats the reading I am getting on more than one battery. Volt meter might be slightly off. Generally the car running puts out like 14.5 on my car but I do have alot of extra electrical draws on mine.

[LTb1ow]

Yea, its on the list of things to check this weekend. I just refuse to believe it happened coincidentally at the same time the ABS went out... IDK. Electrical things were never my forte.