bungy 2 Posted July 31, 2011 Report Share Posted July 31, 2011 I'm getting battery drain and so something is either not switching off or similar. Has any one got any hints or tips for narrowing down the fault and zeroing on where it is? Link to post Share on other sites
craggsy 91 Posted July 31, 2011 Report Share Posted July 31, 2011 What stereo you got as they don't always work to well in mk4s ive read, something to do with comms or something. Not 100% sure Link to post Share on other sites
ian_GTI 0 Posted July 31, 2011 Report Share Posted July 31, 2011 If you have a muitmeter set it to AMPS (remember to plug the red lead into the hole with a A on it as it's different to the volts one)Disconnect the battery earth them put the meter onto the earth on the battery and the earth lead so it's inline with the batteryThis will show the amp draw to the battery upto 0.7 is fine as the will be things like the clock etcIf it's higher than that have a go at disconnecting the radio etc and see if it makes a change. If not the the quickest way is to pull each fuse one at a time to see if that makes a change to the draw so you know what circuit the problem is on Link to post Share on other sites
bungy 2 Posted July 31, 2011 Author Report Share Posted July 31, 2011 Cheers Ian, that's pretty much what I thought.Thanks for the heads up Craig about the stereo but it's been in there for nearly 2 years and it's only just started happening. I'll let you know how I get on. Link to post Share on other sites
bungy 2 Posted July 31, 2011 Author Report Share Posted July 31, 2011 Had a quick look earlier and everything seems ok. Amps in series is only 0.03 and the battery voltage is 12.76. Alternator was new last year so i'm thinking it might be time to change the battery. Any idea's? Link to post Share on other sites
ian_GTI 0 Posted July 31, 2011 Report Share Posted July 31, 2011 Did you check the alternator output under load mateStart the car turn everything on and check the voltage out put should stay over 13v on idleIf that's ok then get your battery checked Link to post Share on other sites
bungy 2 Posted July 31, 2011 Author Report Share Posted July 31, 2011 I'll have a go at that later. I'd be upset if it is the alternator as it is a pig to change a cost a small fortune for a Bosche one. Link to post Share on other sites
ian_GTI 0 Posted July 31, 2011 Report Share Posted July 31, 2011 Its probably not the alternator but always best to check If you go to any local garage or a Halfords they should to a free battery check Link to post Share on other sites
legvw 0 Posted July 31, 2011 Report Share Posted July 31, 2011 I've got a battery tester I'd you want to borrow it mate Link to post Share on other sites
bungy 2 Posted July 31, 2011 Author Report Share Posted July 31, 2011 Might need to check my battery then so that would be good Paul. Link to post Share on other sites
J5KE F 0 Posted July 31, 2011 Report Share Posted July 31, 2011 If u want a home for ur old battery dude vanessa will always accomodate As i said earlier our old 4mo had a nuisance drain and interestingly on what craig said, it only started when we put the oem radio back in!! Link to post Share on other sites
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