Electrical Problems

[Terminal]

Hey guys. I've had a look around and this sounds like a unique problem to me. I've got this R33 and the battery keeps going flat.

I purchased a new battery and got an electrician to look at it, he said it had a bad earth.

Now, after about 2 days from driving it, the battey is as flat as a tack, and the alarm is trying feably to sound, but it sounds more like a magpie giving birth.

The same sparkies have had another look at it, say it's not draining from the battery, there's no discharge at all, yet the battery still goes flat.

They removed the alarm and put another new battery in it, hoping its something to do with the alarm, but alas, the battery still went flat over the weekend.

If anyone has had a similar problem to this, or is as stumped as me, give us a yell so i can tell the sparkies what to look for,

Cheers guys

[CNR33]

Did the sparky check the alternator?

[Terminal]

Did the sparky check the alternator?

<{POST_SNAPBACK}>

yeah that's fine too. it charges the battery fine, just something else is discharging it.

the sparky hooked an ameter up to it overnight once and said nothing was draining from it, but 2 days later it was flat

[onboost]

dont know whats the prob is but i have had the same thing

although its only happend once or twice, it just goes flat for no i jump it or roll start it and its all good again

i'd be keen to hear what other people think

[SirSkyline]

I Had this problem to but I got it fixed it cost me $320 to find the problem.

Its was 2 relays on the passenger side under the dash and they would not turn off when you turned the car off which the ECU should turn off but wouldn't, so its some fault with the ECU we had to rewire the 2 relays so they were hooked up to ignition or ON on the key column I cant remember which.

but that should fix it for you

[blind_elk]

the sparky hooked an ameter up to it overnight once and said nothing was draining from it...

<{POST_SNAPBACK}>

You don't need to wait overnight. If something is draining the battery, you will see it immediately.

Check the boot light is turning off properly (although I would expect it to take a bit longer to discharge the battery).

[Terminal]

I Had this problem to but I got it fixed it cost me $320 to find the problem.

Its was 2 relays on the passenger side under the dash and they would not turn off when you turned the car off which the ECU should turn off but wouldn't, so its some fault with the ECU we had to rewire the 2 relays so they were hooked up to ignition or ON on the key column I cant remember which.

but that should fix it for you

<{POST_SNAPBACK}>

The sparky found the problem today, it was this exact thing. I've had the ecu rewired and now it's working fine. thanks a lot for the help guys, i'm glad to have this problem finally fixed

[lordsnipe]

i've had to drive the car every 2 or 3 days otherwise it would have trouble starting if left for a few days.

i will also look into this. how much did it cost you to fix?

[Terminal]

Well it took them a while to find the problem, so it was $300 in labour, but if you told them first up what it was, they could fix it pretty quickly, i would say less than an hour labour

[SirSkyline]

yeah i wish knew what it was it would of saved me a bit of money

[lordsnipe]

so I should just tell em there's a couple of relays on the passenger side which may be kept on after the car has been turned off, which is causing the battery to drain after a few days.

cheers

[SirSkyline]

yep