Charging Problems!!!HELLLLP!!!!

Foster98GT · 07-01-2007, 10:45 AM

This is my 87 GT........
When my A/C is turned on my batt volt meter drops low. I think the alternator is the prob. I searted the car, removed the positive post and the car still runs, however when i switch the A/C or headlights on it stalls. What do you think is the prob?

I had my old Alternator and Battery tested and they both passed. I still purchased a new Alternator the problem is still there...Any ideas whats wrong?

cobra1923 · 07-03-2007, 09:01 AM

I'm going with a poor ground connection. Check the neg lead from the battery and the misc stainless straps from the block to the sub frame.

Does it do it with just AC or just headlights or does it have to be both?

97Gt · 07-05-2007, 09:42 AM

Check all the grounds and sand where it bolt to for a clean/good ground.

ClemsonStang · 07-05-2007, 06:34 PM

the 5.0 alternator sucks... its not even really enough for the car. do a 3g swap and get it over with

cobra1923 · 07-08-2007, 07:32 PM

true dat, especially if you throw on an underdrive pulley

07-01-2007, 10:45 AM	#1 (permalink)
Foster98GT Senior Member Join Date: Oct 2005 Location: Alpharetta ,Ga Posts: 218	Charging Problems!!!HELLLLP!!!! This is my 87 GT........ When my A/C is turned on my batt volt meter drops low. I think the alternator is the prob. I searted the car, removed the positive post and the car still runs, however when i switch the A/C or headlights on it stalls. What do you think is the prob? I had my old Alternator and Battery tested and they both passed. I still purchased a new Alternator the problem is still there...Any ideas whats wrong? __________________

07-03-2007, 09:01 AM	#2 (permalink)
cobra1923 Senior Member Join Date: Nov 2004 Location: Baltimore Posts: 581	I'm going with a poor ground connection. Check the neg lead from the battery and the misc stainless straps from the block to the sub frame. Does it do it with just AC or just headlights or does it have to be both? __________________ 2003 10th Anniversary Cobra Convertible All Stock and staying that way... well maybe some pipes since it's so quiet..ahhhh! it's a sickness 1995 mustang GT vert - all black (almost back together)

07-05-2007, 09:42 AM	#3 (permalink)
97Gt Member Join Date: Jul 2006 Location: Charleston SC Posts: 68	Check all the grounds and sand where it bolt to for a clean/good ground. __________________ Got rid of the 97 and went with a 89 5.0 http://www.bpelowcountry.com/

07-05-2007, 06:34 PM	#4 (permalink)
ClemsonStang Senior Member Join Date: Aug 2006 Posts: 378	the 5.0 alternator sucks... its not even really enough for the car. do a 3g swap and get it over with __________________

07-08-2007, 07:32 PM	#5 (permalink)
cobra1923 Senior Member Join Date: Nov 2004 Location: Baltimore Posts: 581	true dat, especially if you throw on an underdrive pulley __________________ 2003 10th Anniversary Cobra Convertible All Stock and staying that way... well maybe some pipes since it's so quiet..ahhhh! it's a sickness 1995 mustang GT vert - all black (almost back together)

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