F Frank Registered Member Joined Oct 2, 2001 Posts 16 Reaction score 0 Sep 5, 2004 #1 When I turn on the ignition, I hear the Fuel Pump humming for a few seconds then it cuts off. Is this the normal function or does it have to be a steady Hum ??
When I turn on the ignition, I hear the Fuel Pump humming for a few seconds then it cuts off. Is this the normal function or does it have to be a steady Hum ??
J js4x4 1/2 ton status Joined Jul 17, 2004 Posts 798 Reaction score 0 Location San Diego, CA Sep 5, 2004 #2 normal.
S spearchucker 1/2 ton status Joined Nov 17, 2003 Posts 1,556 Reaction score 1 Location Bay area, CA Sep 5, 2004 #3 It's just pressurizing the system.