2002 Peugeot Boxer Battery being drained

Tiny
ANESH
  • MEMBER
  • 2002 PEUGEOT BOXER
  • 2.0L
  • MANUAL
  • 100,000 MILES
Ok, I'm having problems with a Peugeot Boxer the battery keeps dying.
So this van has a few problems when I bought if the electrics seam to be a rats nest of s--t I've after buying a new battery and it worked for a while then a few days later completely dead.
When I went to jump start it it took quite a few try's before it started it would start again when it was running for a while but if I left It half an hour it would be completely dead.
I also charged the battery for a couple of days and when I go to start it it ticks over but won't start needs a jump to start. So I thought the alternator was bad so I tested it by disconnecting the negitive when it was running and it didn't knock off so I thought the alternator might be ok. So I have come to the conclusion the is a drain on the battery that's why it won't start on a charged battery. So if any one can help you would be doing me a massive favour any ideas or a way to find what's draining the battery. I checked to make sure no light where on inside and out. And just wondering what resistance across the battery in omhs should read when the van key is out. Please help need to sort out the van has the neighbors are going mad it's been parked up for so long
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Monday, December 15th, 2014 AT 3:20 PM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
Firstly never disconnect the battery with the engine running, when re connecting if the battery is low on charge and the alternator is working to peek output the voltage spike can destroy your ECU.

To test for current draw, turn off engine, remove key and close doors if you have a bonnet light make sure it is off.

Disconnect the Battery Pos(+) place an amp meter between battery post and battery cable, you should have about.2 amps current draw, this will be the clock, radio memory and ECU memcal if used anything much higher is a problem

Start pulling fuses one at a time to locate circuit drawing the current, also disconnect the alt pos cable as a test as a blown diode in the rectifier will back feed current and flatten a battery you will still have a charge rate albeit some what less that optimal, start here.
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Tuesday, December 16th, 2014 AT 3:35 AM

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