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My 740GLE is running poorly. The idle is up and down a bit (500 - 700 rpm)
The O2 sensor & cat converter have been replaced. The bothersome item is
a sound from under the car that resembles a the air coming out of a baloon
(squeeling sound). I believe its coming from the fuel pump. I did replace
the pump recently but the noise persists and the car runs poorly.
I also hear a click under the engine everytime the idle drops to a lower rpm. The rpm's slowly come up again to around 750rpm then drop
Let me know if anyone has any thoughts
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