ALH Injection Pump / Fuel Solenoid Power

pdtdiarl

Well-known member
Joined
May 8, 2018
Location
EU
TDI
golf4
Are you sure its from alternator? Try to unplug the ac compressor, feed to the headlights too.
 

DudaEnergy

Well-known member
Joined
May 4, 2015
Location
Madison, AL
TDI
2003 VW 1.9L
Confirmed the noise is from the alternator today. I guess the DC output from the alternator actually goes through a different wire than I thought. I disconnected it directly from the alternator and the sound stopped. I think the wire I thought it was was for the starter.



So now I get to replace my alternator.
 
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