Quick voltage question for all of you.

Eatmyclutch · 07-09-2008, 10:10 PM

Before and after warm up (drive-time), what does your voltmeter on your gauge cluster read?

Mine goes from 12 to 13.1, that is if .1 V is even possible.

josh18_2k · 07-09-2008, 10:24 PM

should be 14.7
your alt may be dying, lose connection, belt slipping, etc

Kentetsu · 07-10-2008, 12:04 AM

Or corroded cables...

85rx-7gsl-se · 07-10-2008, 12:06 AM

My S4 alternator doesn't put out anything until I rev it up once, then starts putting out like normal, kinda weird.

Phoenix7 · 07-10-2008, 12:59 AM

Quote:

Originally Posted by Eatmyclutch

Before and after warm up (drive-time), what does your voltmeter on your gauge cluster read?

Mine goes from 12 to 13.1, that is if .1 V is even possible.

ALternator comes to mind first. I had a weird one: The output cable was bad and kept killing the voltage regulator.

Quote:

Originally Posted by josh18_2k

should be 14.7
your alt may be dying, lose connection, belt slipping, etc

+1

Quote:

Originally Posted by Kentetsu

Or corroded cables...

+1

Quote:

Originally Posted by 85rx-7gsl-se

My S4 alternator doesn't put out anything until I rev it up once, then starts putting out like normal, kinda weird.

I did that for a few months. Expect your alt to crap out soon. Worse case scenario: You blow your electrical system from an overload. When you rev and it adjusts the voltage it may mean the voltage regulator is dying/faulty. It COULD ZAP your electrical system just as easy as it undercharges it. Keep an eye out and test the voltage at the B-terminal.

Learned most of that from RETed.

85rx-7gsl-se · 07-10-2008, 01:08 AM

Well hopefully not as its freshly rebuilt

Phoenix7 · 07-10-2008, 01:17 AM

so was mine, twice. The wire kept killing it. It's been at least a month already and no problems after bypassing the stock output wire.

Whizbang · 07-10-2008, 08:12 AM

mine always were in the 14.4 ish range.

Jeff20B · 07-10-2008, 11:15 AM

Quote:

Originally Posted by 85rx-7gsl-se

My S4 alternator doesn't put out anything until I rev it up once, then starts putting out like normal, kinda weird.

Mine did that when the T-shaped connector fell out the back. Plugged it back in and worked like stock again.

Eatmyclutch · 07-10-2008, 07:46 PM

It could just be the battery, may need a recharge.

I made a thread before about my batteries keep on dying, which turned out to be a faulty alt. I didn't replace that battery so that maybe it.

The voltage been this way since I replaced a new alt.

Phoenix7 · 07-10-2008, 09:36 PM

go to Kragen's and have them test the battery.

07-09-2008, 10:10 PM	#1
Eatmyclutch business as usual Join Date: Apr 2008 Location: Emerald City Posts: 154 Rep Power: 0	Quick voltage question for all of you. Before and after warm up (drive-time), what does your voltmeter on your gauge cluster read? Mine goes from 12 to 13.1, that is if .1 V is even possible. __________________ Bitch

07-09-2008, 10:24 PM	#2
josh18_2k Rotary Fanatic Join Date: Feb 2008 Location: Gresham, OR Posts: 473 Rep Power: 18	should be 14.7 your alt may be dying, lose connection, belt slipping, etc __________________

07-10-2008, 08:12 AM	#8
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp Posts: 3,190 Rep Power: 21	mine always were in the 14.4 ish range. __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

07-10-2008, 07:46 PM	#10
Eatmyclutch business as usual Join Date: Apr 2008 Location: Emerald City Posts: 154 Rep Power: 0	It could just be the battery, may need a recharge. I made a thread before about my batteries keep on dying, which turned out to be a faulty alt. I didn't replace that battery so that maybe it. The voltage been this way since I replaced a new alt. __________________ Bitch

07-10-2008, 12:04 AM	#3
Kentetsu RCC Contributor Join Date: Feb 2008 Location: Grand Rapids, Michigan Posts: 530 Rep Power: 18	Or corroded cables...