[s-cars] Strange Fuel Pump Behaviour
Matthew Russell
skippertgore at msn.com
Mon Jun 9 07:13:05 PDT 2008
Brian -
I'm not necessarily convinced that this is a fuel pump problem.
Try loosening your gas cap next time you notice the noise. If fumes
and air escape (which it will) and then the noise is gone, it's a tank
venting issue.
My car makes similar noise, i've been ignoring it for a while now
(>1yr). not sure of the long-term effects though!
Matt, CO
92s4
On Jun 9, 2008, at 7:27 AM, Brian wrote:
>
>
> All,
>
> Took my '93 S4 out yesterday in 100 degree heat for a cruise. Car
> battery had died so the night before I charged it up. After getting
> to
> my destination, I noticed a slight hum/whine from the trunk when I
> shut
> it down (lasted about 5 seconds).
>
> When I got home after pushing the car hard, the hum/whine would not go
> away after I shut the car off. Opened the trunk, put my hand on the
> top
> of the fuel pump access plate, and could feel slight vibrations.
> Pulled
> fuse number 17, no change.
>
> Here's where it gets a bit weird. Pulled the negative battery cable
> (I
> smelled gas fumes and this thing was still whirring) and the STILL
> felt/heard pump noise. Finally died out after a couple of minutes.
>
> 3/4 full gas tank, 134K miles, no previous trouble.
>
> Help!!
>
> Brian
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