Jump to content
SAU Community

Current Leakage - How To Identify Source?

bombastic

By bombastic,
in Car Audio & Electrical

 Share

Recommended Posts

bombastic Collaborator

bombastic

Posted
Posted

Just had a new alarm installed in my r33 yesterday, but the battery went dead overnight. I gave it a charge, and checked the current coming out of the battery with no interior lights on - 400mA. Seems like quite a lot. I thought maybe the alarm might have a backup battery which would be charging, but it should have been done by now if it was.

I tried pulling fuses in the engine bay - no difference. The only fuse in the boot which made a noticeable difference was the main fuse, which doesn't tell me much (even then, something was still drawing 100mA).

Are there other fuses in the car I can check? I thought of removing power from the alarm but it's in a really tight spot and all black wiring etc.

What to do?

Thanks!

DRD-00F Grand Master

DRD-00F

Posted
Posted

talk to your installer...

its that simple... alarms are something left to proffesionals, especially on such nice cars... and its his work too, you should never let one sparky touch another sparkies work...

Chris Rogers Grand Master

Chris Rogers

Posted
Posted

so you have a current probe? pull fuses until it dies. this includes the alarm fuses.

400mA is enough to flatten a battery over night.

failing that - take it to the fitter and let them sort it out..

bombastic Collaborator

bombastic

Posted
  • Author
Posted
I'd be taking it STRAIGHT back, its only 1 day old! Installer needs to fix the problem.

I'm just gonna see how long it takes the battery to run dead again. I had the car for 6 days and it always started easily, and that included 2 days of not driving it. So if it dies in less than a few days, I'll know the problem was caused by the install, and I'll ask him to come back.

bombastic Collaborator

bombastic

Posted
  • Author
Posted (edited)

Turns out it wasn't the installers fault at all, just a huge coincidence that the battery lasted a week no problems then died the day of the install.

I pulled the stock headunit out and that dropped most of the leakage (thanks Chris). Still 150mA elsewhere though (100mA on 'TAIL L' fuse and 50mA dunno).

If anyone has any suggestions on what to look for on TAIL L I'm all ears!

Cheers!

Edited by bombastic
bombastic Collaborator

bombastic

Posted
  • Author
Posted

Props to Leon for a fine job after all :D He spent half an hour on the phone to me today discussing it, and was going to come out tomorrow and sort it out for me until I discovered the fault.

I won't plug the name of the business in this thread though as I would hate for anyone to be put off by the title of the thread if they did a search. But if they have read this far then no harm done.

Apologies if I gave you any grief, Leon! The main reason I came on here and posted was I wanted to be as sure as I could that it wasn't your fault before I got you out. SAU wins again, credit goes to Chris for suggesting stereo.

Chris Rogers Grand Master

Chris Rogers

Posted
Posted

stereo is a common one. clarion and pioneer of that vintage use the same amplifier (usually a toshiba item.) and it develops a short. worst one I saw was 1.25A. that fried a battery over night before we found it . (this was an alpine unit)

spoke to him for 15 min myself before he rang you clarifiying your problem. get a base draw on the car (should be 50mA or less) and work out where the rest of it is. 150 Ma will drain a battery but NOTHING like a 400mA one will. if you drive the car daily it wont be a probelm. problems ring us first :D

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Rezz
      Shoota's R33 GT-R RB30/26

      By Rezz · Posted

      What an awesome idea to fit the facelift Lamborghini Diablo headlights. They are a perfect fit!
    • hoodedreeper
      Chris' Toyota Mark ii JZX110

      By hoodedreeper · Posted

      An update regarding the registration with the DVLA I sent off the paperwork the day after I collected the car from the port, two weeks later it was all returned with a letter explaining they have rejected the application. This was because the cheque was £20 short for the road tax (I used a price list I found online). Nevermind it is what it is, it was sent back to them the following day with a new cheque. Fast forward another 2 weeks or so, I called them for an update to be told it had been rejected. Yesterday (16th September) I received the documents back along with another letter, this time it was because I didn't put an X in one box on the V750 (personalised number plate certificate), which declared that I had the rights to the personalised number plate. Why this wasn't mentioned in the first rejection letter, I don't know, but it could have saved this headache. The documents were sent back today, so fingers crossed third times a charm and it'll FINALLY be registered on the road just in time for the bad weather (woohoo!) To cheer myself up I lowered the front 25mm, was sick of seeing it sit like a monster truck. No idea how much clearance I'll have getting on and off the driveway, I'll worry about that when I can actually drive it
    • Dose Pipe Sutututu
      Chris' Toyota Mark ii JZX110

      By Dose Pipe Sutututu · Posted

      You're going to miss not worrying about rust in the strut towers like the Skyline shitboxes out there
    • hoodedreeper
      Chris' Toyota Mark ii JZX110

      By hoodedreeper · Posted

      A few little updates that weren't filmed due to not taking long to do or not interesting enough for their own video. My new K&N Air Filter arrived, I went with an RU-4180 which matched the dimensions of the universal cone filter the car originally had.  The battery had gone flat, while that was charging I tidied up the spaghetti wiring at the bulk head and down the sides of the engine Next job was to swap the stereo The Kenwood harness had the female ISO plugs cut off and the male ISO plugs cut off the adaptor loom and joined with bullet connectors. I ordered in a repair loom through work and re-did it all. New Kenwood unit installed (Android Auto, DAB, Bluetooth, Reverse Camera) The bonnet/hood gas struts have been poor since collecting the car. I couldn't find any suitable replacements locally so took a chance on a pair from AliExpress.  The originals don't use a retaining clip to secure the cup onto the ball fixture, would explain why I struggled for 10-15mins trying to pry off the cups. The ball fixtures unscrew using a 12mm spanner, new ones are the same size. Sadly no photo of them fitted, you're not missing much lol The dished Momo steering wheel got replaced with my Momo Tuner, turns out I ordered counter sunk bolts for the horn trim ring (like they normally are for the steering wheel) instead of allen cap (flat seat)  A terrible photo of a Quaife style gear shift knob I've had stashed in my tool box for many years after purchasing the incorrect thread size (I can see a pattern emerging with ordering incorrect parts...) Also threw in a cup holder and a (empty) Boss Coffee can, because why not  
    • Shoota_77
      Shoota's R33 GT-R RB30/26

      By Shoota_77 · Posted

      GT-R clearly the better choice! The 300 is certainly not insaly fast but has a decent amount of poke. Does a nice little drift around the corners with a decent amount of throttle. It's VERY predictable in a slide too.  Feels so progressive! People probably presume there's a 25 year old driving it based on my behaviour this week! 🤣
×
×
  • Create New...