Thread: Ignition voltage drop on 411 S5
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Old 16-10-25, 08:05 PM
Thomas591 Thomas591 is offline
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Join Date: Mar 2021
Location: Norderstedt Germany
Posts: 111
Default Ignition voltage drop on 411 S5
I have a problem with too low ideling in City traffic. I found out that when the electric fans in front of the radiator are switched on, the voltage on the ignition coil drops to 9,5 Volt when ideling. The result is a drop of 200 rpm, making the Engine run too Slow.
To solve this problem I am thinking to activate the ignition coil ballast relay every time the fan relay is activated..

Is my idea of a solution practical?
Will I fry the ignition coil on the Long run?
Any other ideas?

Regards

Thomas
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