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Alternator problem? #963712 04/01/11 01:30 PM 04/01/11 01:30 PM
Joined: Jan 2003 Posts: 754 Longview, Texas marvo451 OP super stock
marvo451 OP super stock Joined: Jan 2003 Posts: 754 Longview, Texas	I went out today to find 2 dead batteries. There is nothing on in the racecar. Is there a way that a Toyota alternator can discharge 2 deep cycle marine batteries in 48 hours?

Re: Alternator problem? [Re: marvo451] #963713 04/01/11 04:53 PM 04/01/11 04:53 PM
Joined: Jan 2003 Posts: 4,852 KENTUCKY 69CHARGERMD master
69CHARGERMD master Joined: Jan 2003 Posts: 4,852 KENTUCKY	I am planning on running the alt you refer to (Denso 60amp, toyota forefunne set up ? ) I have seen this quoted,,,,, "300mA or More of Current Drawn When Motor is Off"

Re: Alternator problem? [Re: marvo451] #963714 04/01/11 05:13 PM 04/01/11 05:13 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: I went out today to find 2 dead batteries. There is nothing on in the racecar. Is there a way that a Toyota alternator can discharge 2 deep cycle marine batteries in 48 hours? Did you have the master switch off... if you did, either they werent charged up OR you have 1 or both bad batteries(possible shorted cell) also being that you run a alt you should run a NON deep cycle type battery

Re: Alternator problem? [Re: MR_P_BODY] #963715 04/01/11 05:24 PM 04/01/11 05:24 PM
Joined: Jan 2003 Posts: 754 Longview, Texas marvo451 OP super stock
marvo451 OP super stock Joined: Jan 2003 Posts: 754 Longview, Texas	They were fully charged, but I forgot to throw the disconnect. I had 2 new deep cycles before I added the alternator. They are still less that one year old.

Re: Alternator problem? [Re: marvo451] #963716 04/01/11 05:36 PM 04/01/11 05:36 PM
Joined: Oct 2003 Posts: 7,506 Az Crizila master
Crizila master Joined: Oct 2003 Posts: 7,506 Az	A 1/3rd of an amp is a pretty good draw, but the only way to know for sure is to put an amp meter on it once the battery's are charged up again. Fastest 300

Re: Alternator problem? [Re: Crizila] #963717 04/01/11 06:05 PM 04/01/11 06:05 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: A 1/3rd of an amp is a pretty good draw, but the only way to know for sure is to put an amp meter on it once the battery's are charged up again. Yep... pull the pos cable and put the amp gauge between the post and the cable to check it(engine off)... but to kill 2 batteries in 48 hours you will have a pretty good draw

Re: Alternator problem? [Re: MR_P_BODY] #963718 04/02/11 06:16 PM 04/02/11 06:16 PM
Joined: Jan 2003 Posts: 754 Longview, Texas marvo451 OP super stock
marvo451 OP super stock Joined: Jan 2003 Posts: 754 Longview, Texas	I took the charge wire off of the battery(wire to alternator) and left the battery disconnect on overnight. No loss in batttery voltage overnight. So, it must have something to do with my alternator.

Re: Alternator problem? [Re: marvo451] #963719 04/02/11 06:26 PM 04/02/11 06:26 PM
Joined: Jan 2007 Posts: 3,695 nc E emarine01 master
emarine01 master E Joined: Jan 2007 Posts: 3,695 nc	hook up the output wire and see if the alt gets warm just sitting without running the engine, if so the internal reg may be bad

Re: Alternator problem? [Re: emarine01] #963720 04/03/11 08:57 AM 04/03/11 08:57 AM
Joined: Mar 2003 Posts: 1,629 pa 572charger top fuel
572charger top fuel Joined: Mar 2003 Posts: 1,629 pa	had that happen on my 1 wire alt badd internal reg new reg never did it again !! 606 hemi pump gas best 9.60 at 142mph on motor 05 hemi daytona 1500 go-mango 4wd quadcab 2007 hotrod mag pump gas drags runner up, roadkill nights dodge big tire winner 2018 2019 back to back

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