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Super fantastic Mod Technical Supremo Nice Guy
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Yes Dave,
Thats one hell of a Draw,

At that rate the battery would not last long enough to leave it a few hours and start the car again.
Yet he can leave the car and it will start in the day

Cannot see how the alternator could charge a battery that quick that it could last those few hours if the car was draining 4 amps
Would DEFFO get that Battery properly tested
 
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Discussion Starter #23
How are you measuring this draw
Looks like both Probes are on the Battery Positive Terminal in one of your pictures
Battery terminal is actually disconnected
Can a mk3 shut down completely with the bonnet open Stu?
It can if you put the bonnet catch down
Yes Dave,
Thats one hell of a Draw,

At that rate the battery would not last long enough to leave it a few hours and start the car again.
Yet he can leave the car and it will start in the day

Cannot see how the alternator could charge a battery that quick that it could last those few hours if the car was draining 4 amps
Would DEFFO get that Battery properly tested
the car charges the battery very quickly it drains down overnight
 

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Super fantastic Mod Technical Supremo Nice Guy
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no alternator will charge a flat battery EVER,
Alternator just TOPS a battery up.

If you see instructions on fitting a new alternator, battery must be fully charged first

Would be getting the battery charged on an external charger, then taking the battery down to a motor factor/garage and get the battery correctly tested
The worst thing to do on any electrics on cars is start pulling fuses/connectors off.
 

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Super Moderator Technical Supremo Platinum Member
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To me, with that sort of draw, there is a solenoid somewhere not fully operating so the wee beasty is still trying.
Agree with Ourkid, pulling connectors and fuses willy nilly is not clever, it needs some thought and logic applied.
When the car shuts down, various actuators power to default.... on a diesel, EGR is one..... any sign of it being hot or buzzing?
Any sign of buzzing around door locks?
Any lights on...including boot light.
Basically a good coating of looking at before jumping in.
Fully concur with charging the battery off car and getting it load tested.... don't care if it is only 2 years old, they can fail.
But if it has, should be covered on warrantee... most are guaranteed for at least 3 years now.
 

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Discussion Starter #27
Can a mk3 shut down completely with the bonnet open Stu?
It will if you put the bonnet catch over and let it think the body shut
no alternator will charge a flat battery EVER,
Alternator just TOPS a battery up.

If you see instructions on fitting a new alternator, battery must be fully charged first

Would be getting the battery charged on an external charger, then taking the battery down to a motor factor/garage and get the battery correctly tested
The worst thing to do on any electrics on cars is start pulling fuses/connectors off.
 

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Discussion Starter #28
It will if you put the bonnet catch over and let it think the body shut
After 4 hours the auto electrician has tracked it down to this wire goes to the back of the car I'm off to find a wiring diagram find out where this wire goes you unplug it here's the problem it goes to a 70 amp fuse behind the battery
 

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Super Moderator Technical Supremo Platinum Member
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70A fuse and going to back of car?
Offhand cant think of what would take that sort of power... heated rear screen perhaps but seems high even for that.
Perhaps EPB?
Got a photo of the fusebox with the fuse highlighted?
Maybe someone can identify what it feeds?
 

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Technical Supremo, Platinum Member
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Was the car ever used for towing a caravan? Thinking charging circuit for caravan batteries?
 
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