Hello guys!

Hade an issue today...

After a jumpstart I forgott to disconect  the cables and drove away 50-100 yards. I stoped the car when I heard the rattle behind the car and disconected them. Then when I drove a test run the ammeter was showing max load, is this normal? What would be the result if the positive and negative jumpstart cables made contact?

Anders

Last edited by George P
Original Post

could it be with the "dead" battery, the alternator is at full charge trying to build battery back up. 

you could check the voltage to see it is overcharging

Last edited by George P

Ignoring the ammeter for a moment, lets first assess the condition of the battery, the alternator, and the voltage regulator:

What's the voltage across the battery terminals with the engine off?
What's the voltage across the battery terminals with the engine at idle?
What's the voltage across the battery terminals with the engine at 4000 rpm?

Now please explain is the ammeter reading full scale left, or full scale right? Max discharge (left), or max charge (right)?

Last edited by George P

Dear Friends!

Thank you for your quick reply.

First: The battery is placed behind driver side, lhd, with a Anderson quick jack plug fitted at the tail, if anyone wonder...

George;

The needle was pointing to the right + at idle the reading was mutch lower and when I check the voltage at the battery after the drive it was 12,9V.

To be continued

Bets

Anders

The amp meter is reading correctly and should stabilize once your battery is fully charged. My suggestion is to charge your battery over night and not let the car do it. 

To all,

Done, battery fully charged it al looks ok during driving. All this occured during synchronizing itb and that isa p.i.a. ( a lot of idling, stops, cranking, idling...)

Best,

Anders

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