Ammeter Erratic

DubP5B

New Member
1000037304.jpg1000037305.jpg
Hi
I have an erratic ammeter in my P5B.
The ignition light goes out and current jumps. The ammeter flicks up and down and the light intermittently comes on.

It has a reconditioned Lucas 11AC, new 4TR, new 6RA, Lucas 3AW. Idle is set carbs balanced.

Any ideas ?
 
Can you stick a multimeter on the battery and see if the voltage is going up and down or is constant? Any loose connections in the charging circuit (loose or corroded wires in crimps too)? Earth strap to body healthy? Is it doing this at a constant idle?
 
Can you stick a multimeter on the battery and see if the voltage is going up and down or is constant? Any loose connections in the charging circuit (loose or corroded wires in crimps too)? Earth strap to body healthy? Is it doing this at a constant idle?
Battery voltage is constant. Will take a look at all the connections. It's doing in on constant idle. Thanks
 
Can you stick a multimeter on the battery and see if the voltage is going up and down or is constant? Any loose connections in the charging circuit (loose or corroded wires in crimps too)? Earth strap to body healthy? Is it doing this at a constant idle?
It's not what you are saying, but it's worth saying DON'T under any circumstances put the ammeter across a battery. The shunt creates only tiny voltages.
 
It's not what you are saying, but it's worth saying DON'T under any circumstances put the ammeter across a battery. The shunt creates only tiny voltages.
Absolutely, voltage only. Trying to find out if we've ~14v at the battery and how much it fluctuates when the charging flits.
 
Back
Top