Cadillac Seville / Cadillac Eldorado Forum Discussion, 1992 Seville Base Model 4.9 L Fuel Pump Humming in Past Cadillac Vehicle Discussion; The fuel pump on my Son's Caddy seems to be humming quite a bit. It's noticeable when the window's down ...
Re: 1992 Seville Base Model 4.9 L Fuel Pump Humming
Originally Posted by drewsdeville
that would indicate that you are on the right track with the fuel pump. Just checking. Ranger debunked the elc as well. He's right, the pump is under the hood. I forgot!
I'll measure the fuel pressure and volume. I have a gauge which I use on my '92 Silverado which should work. It has a fitting that is used between the forward fuel line and the filter. Not a bad time to replace the filter too, I guess.
My manual shows the fuel filter to be nearer the rear of the car and near the frame longitudinal member on the drivers side (if I'm reading that correctly). Or, is there a Shrader valve under the hood for checking the fuel pressure?
Originally Posted by Ranger
It's humming because it doesn't know the words and the fat lady is about to sing. How long? But it should be quiet. I don't hear mine (unless I put my ear to the open filler pipe).
Perhaps some of you are like me and I hope most Fathers, there are things we find deficient in our kids. You ask how long has the pump been humming (I like the joke, BTW). Neither I nor my Son know because he's away at school and studies and girls tend to cloud his mind to the point that he blocks out car noises that would tend to make most of us on this board startle.