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car dying overnight


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tyler4109
Novice

Jan 7, 2017, 1:56 PM

Post #1 of 10 (280 views)
car dying overnight Sign In

2007 saturn vue
I have a 2007 saturn vue whos battery wont stop dying over night. i replaced the battery it wasnt the issue and ive had the alternator and battery checked by different sources to make sure they were both running well. so its dying and its not from battery or alternator. when i jump it everything works fine only thing is i notice that when i jump it and it turns over as soon as it starts turning over the horn goes off once.. also in the past the car alarm has gone off randomly at night. this is a re-occurring problem over the past 6 months. it went away for about 3 months and now its back. other things, when it dies sometimes it fully drains the battery other times everything will turn on in the inside but it wont have enough juice to turn over. im not great with cars so i dont really know what to do now, hopefully someone has some sound advice. thank you

other things to note. i just jumped my car and couple things happened, one as soon as the jumpers touched my cars battery the horn also sounded off. also i didnt even have to start the other car i was just able to start mine with that little bit of juice. so im thinking electrical? maybe it thinks a car door is open but ive open and slammed them all shut on other cases also the alarm shouldnt go off considering the car is unlocked. im gonna run it for a while and try to watch it closely when i do finally turn it off. also probably going to autozone maybe see if they have anything I can hook up to my car to see if its an electrical problem somewhere.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jan 7, 2017, 2:15 PM

Post #2 of 10 (271 views)
Re: car dying overnight Sign In

Sounds like you have a parasitic draw on the battery when it's parked.


There is a procedure for finding a battery draw like that.

You will need a digital ammeter and a jumper wire with clips on the ends to do this.
First rig any door switches so you can have a door open without triggering the interior lights and unplug the hood light. Remove one battery cable and attach the meter in series between the battery cable and battery post. Take the jumper wire and also attach it the same way. Leave the jumper wire on for at least 10 minutes to expire all the automatic timers. Now remove the jumper wire and read the meter. Anything over 50ma is too much draw. The way you locate this is to start removing fuses one at a time until the meter drops to normal level. This will be the circuit with something staying on. Determine what components are part of that circuit and check them individually until the problem is isolated.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



tyler4109
Novice

Jan 7, 2017, 2:18 PM

Post #3 of 10 (267 views)
Re: car dying overnight Sign In

thanks so much ill run to my local autozone and see if they can run this test or if i can purchase that. see what i can do. thank you for the reply it helps a ton.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jan 7, 2017, 2:21 PM

Post #4 of 10 (262 views)
Re: car dying overnight Sign In

That's not a test Autozoo is going to do for you. That's a process you or your mechanic will do to isolate the source.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



tyler4109
Novice

Jan 7, 2017, 6:12 PM

Post #5 of 10 (241 views)
Re: car dying overnight Sign In

you were right about autozone i went ahead and bought my self a multimeter. odd thing is when running the meter the voltage is fine then after about 10 seconds it jumps up to 5 then back down to a fine range of about 40-60 then 10 seconds it jumps. im gonna try to pull fuses and see if its one of those causing this issue. just nervous im gonna miss it considering its jumping up and down


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jan 7, 2017, 6:19 PM

Post #6 of 10 (234 views)
Re: car dying overnight Sign In

You obviously didn't read the instructions. You are measuring Amps, not volts so I hope you bought the right meter.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



tyler4109
Novice

Jan 7, 2017, 6:22 PM

Post #7 of 10 (229 views)
Re: car dying overnight Sign In

sorry im just a car moron.. i plugged it in the right way and it is amps im running just put the wrong thing here


tyler4109
Novice

Jan 7, 2017, 6:31 PM

Post #8 of 10 (209 views)
Re: car dying overnight Sign In

also some things to note literally anything i do with my car the horn goes off, i was disonnecting my battery then the horn goes off i start my jump my car my horn goes off. also when i pull the horn fuse out it went off maybe that has something to do with it or maybe its the cars alarm system trying to go off. if i cant find a fuse im just gonna find a way to stop the alarm system.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jan 7, 2017, 6:37 PM

Post #9 of 10 (201 views)
Re: car dying overnight Sign In

Yes, it could be the alarm system. Disconnecting the horn will silence the noise but not stop the current draw.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



tyler4109
Novice

Jan 7, 2017, 6:41 PM

Post #10 of 10 (197 views)
Re: car dying overnight Sign In

ok i appreciate all your help should be able to handle it from here. thanks again.






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