Gpr 109
Post Fiend
Joined: Dec 2010
Posts: 10,121
Likes: 3
From: Orrville, Ohio
You know I wonder if that's what I have been hearing on my truck too. I never thought it might be that GPR. I just replaced mine a couple weeks ago and now when it is glowing, but not running, I do hear a faint hum coming from under the hood. Almost sounds like an electric fuel pump, but obviously that's not the case on my truck. I never noticed it before the GPR109 went in. I'll have to take a closer look!
Junior User
Joined: Jul 2007
Posts: 74
Likes: 0
sorry for dragging this up but I just put on a napa gpr-109 and it's making a buzzing sound.....works fine and carries all the power across it.
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Post Fiend
Joined: Dec 2010
Posts: 10,121
Likes: 3
From: Orrville, Ohio
Mine doesn't buzz really it just sorta "rings". I can hear it from the cab if it is quiet outside, but I can definitely hear it from the front of the truck. There were a couple other who said theirs made some noises as well. I'm not going to worry about it as long as it is working. And if it quits, I'll buy a Stancor relay.
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