Re: what should a fuel pump sound like?

["Dave Ewing" <rabbit16v@prodigy.net>]

Should be a nice even hum like a bee.  If it varies very much at all (the
sound) and/or you can hear it over your motor then you have problems.  When
I get into a car and start it, no matter what it is, and I can hear the pump
from the driver's seat with the motor running then I will generally
reccomend replacing the pump.  You only have one pump I believe but if you
have two (pre and main) then you will have to figure out which one is making
noise.  And if the pre pump isn't making noise then it needs to be replaced
(easy way to check is to disconnect power supply to the pump after removing
the cover under the back seat and seeing if there is a difference in
sound--if the sound stops when disconnected then it is working).   Most of
this is a combination of commen sense and experience.  Don't be afraid since
there isn't a whole lot you can do to the pumps just by
connecting/disconnecting and listenning for noises/or quietness.  My moto--
Man made it, I can fix it!! (just say that over and over to yourself!!)
HTH!!

Dave

> My 85 8v has been running a little rough when cold lately.  I noticed that
> when i switch it to AC (pump is disconected) the radiator fan kicks on ,
but
> the engine rpm stays the same.  So, i concluded that the aux. air
regulator
> must not be working quite right.
> However, i stepped out of my car, and walked around to the fuel pump side
> while it was running cold last night.  From about 10' away i could hear
the
> fuel pump whizzing away.  It didn't sound destructive, but like a cat
> hissing.  I have never noticed this before.  Last time i had a fuel pump
go
> bad, the car would stall after freeway use, but my car runs great when it
has
> warmed up.
>
> Could it be going?  I am thinking i ought to replace it anyway, like a
timing
> belt, but the $200 price tag is a bit more to consider than a $10 timing
belt!
> Any ideas or other warning signs i should look out for?
> thanks
> Ben
> 85 8v
> 84 8v in hiding
>
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