[87gninpa]

I have been having horrible vibrations from under the trunk area, so bad i cant even drive the thing. so i took a peek and it looked like one of my hose clamps on top of the pump was hitting the underside of the trunk. i dropped the tank just to move the clamp so it was out of the way, and the vibration is still there! nothing is hitting anywhere back there. question is, can a fuel pump vibrate and cause this? the car is not holding pressure after shutting the car off and from the diagnosis i used on gnttype.org it led to bad fuel pump check valve (not holding pressure) can this cause vibrating or am i missing something?

 

[Steve Wood]

so, does putting your hand on the fuel tank bottom allow you to feel the vibration? With the engine running, of course.

 

[Ormand]

The fuel pump can be a little noisy. But it's hard to imagine one being so bad that you can't drive the car. Tailpipe hitting the rear springs would be much more likely.

 

[87gninpa]

you can feel it from both the tank and through the trunk while running. definately not the exhaust, ive checked that many times since this has been happening

 

[Steve Wood]

guess it's time for a new pump...

I had one so loud that I could not drive the car...but, I felt very little from it. It was only a few weeks old.

 

[87gninpa]

thanks guys, it has to be the pump. I just didnt know they could make noises like that....