Jump to content
SAU Community

Recommended Posts

I have this problem with my 1997 R33 GTS25T, the battery keeps draining itself, Ive checked the terminals, checked for earth leaks etc. Ive even got a brand spanking new battery and still the same.....any suggestions ?

At the moment, I have to disconnect the negative terminal on the battery to stop it draining itself whenever I park it for an extended periods of time and that's a pain in the back side.

Any help is appreciated, thanks in advance.

Cheers.

Edited by SerenaM
Link to comment
https://www.sau.com.au/forums/topic/319886-r33-battery-keeps-going-flat/
Share on other sites

I had the same problem with the light in the boot. I ended up putting my camera in there and recorded after I closed and sure enough - light didn't go out.

If you have a multimeter (or friend with one) that reads a few amps you can see how much draw is occuring the next time you pull the battery cable. It goes "in-line" between the battery cable and the battery to read how many amps are being drawn. If there is much draw at all - like 1 amp or more, with everything off then you've got something wrong.

Generally look for anything that is causing a drain on the power, alarms, lights etc. Try disconnecting them one by one or pulling the fuses that supply power.

I have the same problem with my 33

My boot light is not on

I have an aftermarket alarm

its odd though a few months ago I never had this problem

I left my car at the top of the driveway for about a month because I wanted to drive my 31 around

I decided to change back,

I knew my battery was going to be flat so I got it charged up by autobarn

put it in left it over night and it started no problem for a week it was fine then it just started with the

battery problems over night and sometimes I drive to work, park it at 9am and then go to start it at 6pm and it sometimes struggles to start

I think it could be one of a few things

Ground - wire could be loose or damaged not giving a full connection

alternator - might not be charging correctly or loose wire or needs new brushes

corrosion on wiring might need a clean or change

short in the system or bad wire

Got my mate at Autobarn to check the alternator

my alternator is charging at 14v and is working perfectly

he said that there might be a current leak in the system

also been told to take out each fuse one by one and test the connections with a multimeter

might have to try this

If I cant work it out then I will take it to an auto-electrician

Edited by DRFT-ME
  DRFT-ME said:
I knew my battery was going to be flat so I got it charged up by autobarn

put it in left it over night and it started no problem for a week it was fine then it just started with the

battery problems over night and sometimes I drive to work, park it at 9am and then go to start it at 6pm and it sometimes struggles to start

I think it could be one of a few things

Ground - wire could be loose or damaged not giving a full connection

alternator - might not be charging correctly or loose wire or needs new brushes

corrosion on wiring might need a clean or change

short in the system or bad wire

nope. dud battery. if you leave a lead acid battery flat it will start to sulfate immediately, and after a few days it will be cactus. it will never hold a charge again after that, the capacity will be minimal compared to when it was new. replace it.

to thread starter with a brand new battery - you need a multimeter on 20 amp range in series with the negative lead going back to the battery. Only do this with the car off and no accessories running - it will tell you what is drawing current. tape the bonnet pin (for the alarm) down and arm the alarm. then disarm and see if it's any different. then start pulling fuses until you work out which fuses are causing your current draw and that will narrow down the problem. you can pull the fuses one by one seeing the impact on the meter and then put it back. and keep a note of which fuses dropped the current draw and the amount of drop. you can then work out what's responsible for sending the battery flat too quickly.

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


  • Similar Content

  • Latest Posts

    • $53.35 and a double din Pioneer head unit that I have...
    • Put a camera facing your dashboard so you can film the gauges. Head out to a straight but of road, and filming it as you go from a stand still at wide open throttle to as fast as you can/feel comfortable doing. Then film the dash board as you for example accelerate like normal onto a freeway. This will give us an indicator from Speedo of your expectation of slow, and will give us the rpm reading too to see if it's shifting. (Auto still has tacho from memory)
    • Buy yourself the cooling system pressure tester. Being able to pump it up, and have a gauge on it, AND have a cold engine makes it much easier / practical to diagnose. Additionally as the engine isn't running, you can listen for pin hole leaks as well as watching if pressure drops away. In addition, you can pressurise and while doing so, watch all the little rubber hoses. Some fail very brittle, and will just leak, while others can end up very soft and bulge. While a bulging hose isn't necessarily leaking, one of those small ones starting to stretch / expand in a bad way is an indicator that you'll be looking to replace that one soon   Depending on if this is a project car, or you'll be dailying it in the summer months would alter how I'd be most comfortable with driving the car and how I'd replace. If you're planning to use it as a daily, with no backup, I'd pull the engine, and replace all the external oil/water lines in one big swoop. At the same time do the timing belt, water pump, tensioners etc. Do not open the engine at all. We just want to replace all the things that are inexpensive as a single item, but a PITA when they go. By doing the above, you've made the car from a bunch of age related issues more reliable. If it's a project, and you like swearing while trying to reach into dirty hard to reach places to replace a single hose that may or may not be the leaky one. Just replace the leaking/bad ones as they need it. If it's a project and you'd rather swear at the car once and enjoy it as much as possible, then refer to the process I mentioned in how I'd want to do it if it were a daily. However, the approaches above do come down to how much spare pocket change you have. Pulling the engine and dropping over a thousand dollars on parts, may not be practical for you. Oh, if engine outing, I'd replace as many silicon/rubber inlet joiners as possible too.
    • Yeah, they're pretty dumb though...ie; they'll throw a solenoid error if the solenoid is dead, shorted, wiring is open circuit, or even if the driver transistor has failed (they can't self-diagnose much, they can only test inputs/outputs)... but if you wanted to try, I believe it's this protocol....(uses a long pulse indicator with short pulse counter)...    
    • Yeah I'll do what I can without taking off any major parts for now. If it becomes clear I won't get far with the engine in the car I'll have to think about the next steps. I am not too stuck on keeping everything 100% OEM, if there is better solutions, like converting most lines to braided with AN adapters, I'd rather do that than buy overpriced new "shit" parts.
×
×
  • Create New...