A/C Drains Battery Need Help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ureckme · 01-10-2005, 01:56 AM

Im a new guy to this board, but not a new to auto/truck repair. I'v ben in collision repair for 25years and solved many a problem. This problem I need a little help with. On my 73 chevy pu my battery goes dead over nite I have traced it to the A/C unit wiring under the hood?. Could be the switch?. If I undo the power to the a/c every thing is fine. But I live in Arizona I will need it soon and I dont suffer very well. Please help

ElGracho · 01-10-2005, 01:58 AM

When you say you undo power to the A/C, where are you doing that? At the compressor? or on the controller under the dash or somewhere else?

ureckme · 01-10-2005, 03:42 AM

My truck was a little riged when I got it. There is a connector on the fire wall under hood a black striped wire, when connected the battery goes dead over nite. Something is keeping the fan relay on ( fan not moving ) with the key off. And it drains the battery can some one shed some light on this.

Project ( Sleeper )
1973 Chevy SWB
406cid SB TH350 2500 Stall
305 Heads Ported 58cc 2.02 1.60

01-10-2005, 01:56 AM	#1
ureckme ureckmefixit2@cox.net Join Date: Dec 2004 Location: Mesa AZ. (Phoenix) Posts: 1,284	A/C Drains Battery Need Help Im a new guy to this board, but not a new to auto/truck repair. I'v ben in collision repair for 25years and solved many a problem. This problem I need a little help with. On my 73 chevy pu my battery goes dead over nite I have traced it to the A/C unit wiring under the hood?. Could be the switch?. If I undo the power to the a/c every thing is fine. But I live in Arizona I will need it soon and I dont suffer very well. Please help

01-10-2005, 01:58 AM	#2
ElGracho Gentleman Jim Driver Join Date: Nov 2002 Location: Poulsbo, WA Posts: 1,553	When you say you undo power to the A/C, where are you doing that? At the compressor? or on the controller under the dash or somewhere else? __________________ Joe '75 GMC Gentleman Jim '84 Chev C10 Short Wide - Super duper plain (manual steering, manual brakes, no dome light, no cig lighter) '85 Chev C10 Short Wide - Super plain Vortec 4.8 4L60E trans also: '81 K30, '83 C30 Crew Dually, '84 M1028 CUCV, '85 M1009 CUCV, another '85 C10 SWB, '89 R3500 Flatbed

01-10-2005, 03:42 AM	#3
ureckme ureckmefixit2@cox.net Join Date: Dec 2004 Location: Mesa AZ. (Phoenix) Posts: 1,284	My truck was a little riged when I got it. There is a connector on the fire wall under hood a black striped wire, when connected the battery goes dead over nite. Something is keeping the fan relay on ( fan not moving ) with the key off. And it drains the battery can some one shed some light on this. Project ( Sleeper ) 1973 Chevy SWB 406cid SB TH350 2500 Stall 305 Heads Ported 58cc 2.02 1.60 Last edited by ureckme; 01-11-2005 at 12:49 AM.



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