Frustrating electrical problem

87TtopMan · 09-16-2006, 09:13 AM

I get a good 14.4 volts at the battery but when I turn anything on my gauge inside drops real bad. I have turned everything on and it almost wants to shut off. The voltage at the battery is 12.5 which is good imo but I just don't think I have enough amps from the alternator to stand up to everything on. I want to try my stock pulley on the alternator but hell I can rev up to 4k rpm and it still is reading low and only slightly better. I really think I have something drawing amps but I cant find it still.

meknized · 09-17-2006, 10:09 PM

Hey,

Have you checked your body grounds? There is one that goes from the negative battery terminal to the inside fender. That sometimes gets real corroded. You might try some heavy gauge wire and go from the block to the frame or firewall just to see if it gets better. I know that the ground straps are easily overlooked.

09-16-2006, 09:13 AM	#1
87TtopMan Registered Member Join Date: Sep 2006 Location: Virginia Beach Posts: 39	Re: Frustrating electrical problem I get a good 14.4 volts at the battery but when I turn anything on my gauge inside drops real bad. I have turned everything on and it almost wants to shut off. The voltage at the battery is 12.5 which is good imo but I just don't think I have enough amps from the alternator to stand up to everything on. I want to try my stock pulley on the alternator but hell I can rev up to 4k rpm and it still is reading low and only slightly better. I really think I have something drawing amps but I cant find it still. __________________ 3.73 Gears, MAC shorty headers, 2.5" H-pipes, Flowmasters, Pulleys, Subframe connecters installed by Steen Racing, MSD coil/cap/button, Accel TFI Looking for GT40 or GT40P heads Mods bought but not installed, GT40 Intake, 65mm TB/EGR spacer, 24lb injectors, MAF conversion, Adjustable Fuel regulator

09-17-2006, 10:09 PM	#2
meknized fox fanatic Join Date: Jul 2004 Location: wichita Ks. Posts: 61	Re: Frustrating electrical problem Hey, Have you checked your body grounds? There is one that goes from the negative battery terminal to the inside fender. That sometimes gets real corroded. You might try some heavy gauge wire and go from the block to the frame or firewall just to see if it gets better. I know that the ground straps are easily overlooked. __________________ meknized Blue/silver 89 GT, Coast 331, ported GT-40x heads, X cam, cobra intake, 70mm TB, 75mm bullet, mac intake, 24lb inj, 255 lph fuel pump, accufab regulator, pulleys, MSD coil, 6AL, 300+ wires, Tremec 5 spd. pro 5.0 shifter, FMS drive shaft, headers, X-pipe, flowmasters, auburn pro series posi. moser 31s axles,3:73s, etc. Best ET 12.02@112.5 a pic A vid of a run:http://www.youtube.com/watch?v=l9JMcErxML8

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