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Fuel pump noise. What is Normal? 200 1990

posted by  someone claiming to be joey on  Mon Sep 27 06:33 CST 2004 [RELATED]

assuming you are talking about the main fuel pump, approximately under the center of the car, it is normal for it to buzz a little bit.

on my 1981, my fuel pump buzzes like a banshee most of the time. i have replaced the pump, and the new one was just as loud, as well as checked all of the fuel lines for blockages, replaced the in-tank pump, and the little thingy next to the fuel pump (fuel pressure regulator I think), and checked the rubber bushings on the fuel pump mounting plate and STILL my main pump buzzes loud enough to hear it in the cabin and feel it vibrating the floor.

I even took out the pump and hooked it up to a 12v battery and just straight ran it, and it is still just as loud as when hooked up to the car.

The thing to worry about with the fuel pumps is not the noise, but rather, a change in the noise. If you had never noticed it before and it has been getting progressively louder, this could be a sign that it needs to be replaced. Otherwise, consider yourself lucky you don't have a buzzing little bastard like mine. :)






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