something draining battery,hooked up to meter and can't find source on 2002 Ford Thunderbird

replaced battery the first time had problem so battery is new repair shop knows something is drawing on the battery but just can't identify what .... any suggestions?

by in Sonoma, CA on January 15, 2013
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2 answers 4 comments
ANSWER by , January 15, 2013
you will have to perform a battery draw test by hooking up a meter in series between the negative battery cable and the battery terminal,then pull fuses one at a time until you see a drop in amperage.And wait 45 minutes after you hook up your meter to the vehicle to allow the modules to go to "sleep".
COMMENT by , January 15, 2013
Thanks I think they have done this or at least some of this. The owner of the shop says he fixed this problem on other cars but it can take as long as a week or more. Does this sound correct?
COMMENT by , January 15, 2013
It is possible for it to take a week or longer if the concern is intermittent.If there is a constant draw on the system it should not take very long to find.I wish you luck,and keep us posted!
COMMENT by , January 15, 2013
Thanks again. I'm told the problem is intermittent. What would be a fair cost to repair?
COMMENT by , January 16, 2013
Greg's is absolutely right! try another shop,sometimes the tech can get flustered with the problem.It's not because he/she is a bad tech,you just get overwhelmed sometimes and need a break.Another shop might find it right away,just be up front with the info about the previous diag. Information is a good thing for a tech.Best of luck,and keep us posted!
ANSWER by , January 16, 2013
seek a diag from another issues are hard to find and very hard to est. ask ? when you arrive at repair shop and only ok a diag fee of approx 1 to 2 hrs labor. sounds like you got alot of good advise from double. good luck