alternator?

Dennis · August 4th, 2008, 10:32 PM

so im driving my car home its 87 degrees with a heat index of 105 got the a/c blarring obviously i look at my guages and notice a big problem. the amp guage and its sitting barley on N in NORMAL. car never died or tried to die got home and shut ac and radio off and it didnt go up enough to even notice. so i ask you this could there be something else wrong besides the alternator? i know the battery is good its barley a year old

G.T. Rags · August 4th, 2008, 10:57 PM

is ur battery light on?

,y alternator took a shit on me last week, battery popped on about 50 miles before the point of no return

Dennis · August 5th, 2008, 12:25 AM

nope no warning light. i wonder if the extreme heat could have something to do with it

sean 96 gt · August 5th, 2008, 08:58 PM

I'm having the same problem. The alternator isn't charging the battery. If you take it to a shop they can test the alternator to see if it is how well it is charging your battery. I just picked up a rebuilt alternator for $85 bucks a few hours ago.

97S281 · August 7th, 2008, 08:58 PM

if you have a meter you can just check the voltage of the battery. let the car sit a while and if it starts to recharge then it's fine. if using the accesories drains it down then it is a charging problem. your alternator doesn't have to take a big ol' shit on you all at once. it can go bad slowly. i drove my old f150 around for 3 weeks with a bad alternator. it would randomly undercharge, overcharge and run fine.

one minute your driving with the lights off in the dark silence, then it starts overcharging and your driving around blinding everybody with your brights, your 16 year old speakers cranked to the max (sounding like shit) and your ac wide open. talk about a piece o' shit!!

sean 96 gt · September 11th, 2008, 08:49 PM

Okay, I didn't want to start a new thread on this so hopefully you guys see this one. I replaced my alternator with a 200amp one built by an alternator shop weeks ago. My voltage is a little low whenever I'm at low rpms. When I use my accesories the voltage drops even more and sometimes my car studders and dies if I'm sitting at idle with accesories on. I thought the new 200amp alternator would have fixed this problem. So...I bought a new battery today; a Duralast Gold. The difference is hardly noticeable.

So basically I had a built 200amp alternator put in with a new Duralast Gold battery and my car is still running like crap and dying on me. The volts go up onlywhen my rpms are high. As soon as I come to a stop they drop.

What am I missing??? Is there some sort of voltage regulator on our cars like in the old days?

G.T. Rags · September 12th, 2008, 12:46 AM

check ur ground

Blower Head · September 12th, 2008, 10:21 AM

Are you running underdrive pulleys?

97S281 · September 12th, 2008, 05:41 PM

+1 on the ground.

sean 96 gt · September 13th, 2008, 05:52 PM

Yea I have steed underdrive pulleys. I didn't have the problem until recently though. I tried checking the ground and everything looks fine. Are there multiple ground cables?

August 5th, 2008, 08:58 PM	#4
sean 96 gt Regular 1998 Mustang GT Join Date: Dec 2006 Location: Anaheim, CA Posts: 131 iTrader: 0 reviews	I'm having the same problem. The alternator isn't charging the battery. If you take it to a shop they can test the alternator to see if it is how well it is charging your battery. I just picked up a rebuilt alternator for $85 bucks a few hours ago. __________________ 98GT - BBK CAI, BBK T/B, BBK Plenum, Steeda Pulleys, BBK o/r X, SLP Loudmouth, 3:73 Gears, Diablo Tune, Steeda Tri-Ax, H&R Super Sports (Eibach Springs in sig), Tokico Shocks

August 7th, 2008, 08:58 PM	#5
97S281 Rollin' 18/ pushin' 2 1997 Saleen S281 Join Date: Feb 2007 Location: Zebulon N.C. Posts: 6,256 iTrader: 13 reviews	if you have a meter you can just check the voltage of the battery. let the car sit a while and if it starts to recharge then it's fine. if using the accesories drains it down then it is a charging problem. your alternator doesn't have to take a big ol' shit on you all at once. it can go bad slowly. i drove my old f150 around for 3 weeks with a bad alternator. it would randomly undercharge, overcharge and run fine. one minute your driving with the lights off in the dark silence, then it starts overcharging and your driving around blinding everybody with your brights, your 16 year old speakers cranked to the max (sounding like shit) and your ac wide open. talk about a piece o' shit!! __________________ MODS IN GARAGE NCMM ORIGINAL BLOWN 96-98 CREW MEMBER # 1

September 11th, 2008, 08:49 PM	#6
sean 96 gt Regular 1998 Mustang GT Join Date: Dec 2006 Location: Anaheim, CA Posts: 131 iTrader: 0 reviews	Okay, I didn't want to start a new thread on this so hopefully you guys see this one. I replaced my alternator with a 200amp one built by an alternator shop weeks ago. My voltage is a little low whenever I'm at low rpms. When I use my accesories the voltage drops even more and sometimes my car studders and dies if I'm sitting at idle with accesories on. I thought the new 200amp alternator would have fixed this problem. So...I bought a new battery today; a Duralast Gold. The difference is hardly noticeable. So basically I had a built 200amp alternator put in with a new Duralast Gold battery and my car is still running like crap and dying on me. The volts go up onlywhen my rpms are high. As soon as I come to a stop they drop. What am I missing??? Is there some sort of voltage regulator on our cars like in the old days? __________________ 98GT - BBK CAI, BBK T/B, BBK Plenum, Steeda Pulleys, BBK o/r X, SLP Loudmouth, 3:73 Gears, Diablo Tune, Steeda Tri-Ax, H&R Super Sports (Eibach Springs in sig), Tokico Shocks

September 12th, 2008, 10:21 AM	#8
Blower Head Regular 1996 Mustang GT Vert Join Date: Oct 2007 Location: blaine, MN Posts: 259 iTrader: 1 reviews	Are you running underdrive pulleys? __________________ 96 GT vert, Aftercooled Vortech, Lightning MAF,42# injectors, saleen cams, Bullitt intake, tune by Hitech, Magnaflow catback and O/R xpipe, Cobra brake upgrade, lowered bilstein suspension w/MM c/c plates and subframe connectors 3000 stall and 3.73's

September 12th, 2008, 05:41 PM	#9
97S281 Rollin' 18/ pushin' 2 1997 Saleen S281 Join Date: Feb 2007 Location: Zebulon N.C. Posts: 6,256 iTrader: 13 reviews	+1 on the ground. __________________ MODS IN GARAGE NCMM ORIGINAL BLOWN 96-98 CREW MEMBER # 1

September 13th, 2008, 05:52 PM	#10
sean 96 gt Regular 1998 Mustang GT Join Date: Dec 2006 Location: Anaheim, CA Posts: 131 iTrader: 0 reviews	Yea I have steed underdrive pulleys. I didn't have the problem until recently though. I tried checking the ground and everything looks fine. Are there multiple ground cables? __________________ 98GT - BBK CAI, BBK T/B, BBK Plenum, Steeda Pulleys, BBK o/r X, SLP Loudmouth, 3:73 Gears, Diablo Tune, Steeda Tri-Ax, H&R Super Sports (Eibach Springs in sig), Tokico Shocks

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