I have a -12volt drain that i cant find if I leave the car parked for a couple of days it will kill the battery. when driving using signals or headlights the voltage gauge starts to drop and if I step on gas it comes right back up its driving me crazy any help or ideas would be great Thanks Timbo

 

you have one of those wonderfull c-s unit alternators! trust me i know ive re-placed 4 of the pos's! it could just be that your computer has a short in it and it constantly drains the battery! it happended to me untill i removed the computer! sorry.... do you even have a comp controlled car? if not the drain is a mis-ground some where! or its probably just the alternator! those alternatord suck!
disconnect your horn lead! try this first see if that fixes it! if not have the alt. tested at your local parts store! thats the first palce id go theyll check it for free!

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1989 firebird formula

Mods: converted from T.B.I. to a carburator 305 to a 350. Flowmater exhaust,hedman shortie hedders,202 160 (882) heads,.447/.447 lift 222@.050 duration speed pro 327/350hp cam 350 .40 over (356) Edlebrock torker2 and a 600 edlebrock manual choke (1405)

Future mods performer rpm air gap intake (polished) comp roller cam, and way better headsa 400 defintely in the works!

 

Well its not the alternator I had that tested first thing. But the primary Fan stays on. could it be my chip or cp?

 

Anyone out there have any ideas? Would be a great help before I Have it looked at $$$$$

 

Fusable links?..that damn + wire running from the battery to the starter (like 14mil trip) likes to rub against a protective metal plate installed by the dummies at GM. This cost me a $30 dollar accell cap, a new starter motor, alternator, battery and an accel coil cause it was shorting big time!

Steve