"Whining" Fuel Pump

[jeffspider]

I've got an '82 FI auto with new engine, wiring,etc. I've solved the idling problem but now I have noticed the fuel pump is making a consistent "whining" or "whirring" sound. It doesn't appear to be starving the engine and will idle around 700-800 rpm.

Is it time for a new pump?

[So Cal Mark]

is the pump isolated properly? mounted in rubber and rubber bushings?

[racydave]

all parts of furl system should be isolated, a grounded fuel line will be noisy, have done it many times on diff cars, esp after extensive repairs.

[jeffspider]

yep...the pump is mounted with the bushing bracket and bolted in.

Sounds like the pump may be going out...

A quote from "Bosch L-Jetronic Fuel Injection Guide FIAT Fuel Injected Engines " First Edition - July 2004 Brad Artigue

Fuel Pump

Located under the car and near the fuel tank, the fuel pump works as described, pumping fuel through the fuel filter and the fuel rail and into the injectors. Failure of the fuel pump can cause intermittent or total loss of power. Pumps are often noisy when failure is pending.

[jeffspider]

Well...since my last post, I have had no more mysterious noises...

What should I make of that?

My car has been garage kept most of the winter and I have just recently (last three weeks) began using her as a daily driver....

[So Cal Mark]

electric pumps are noisy if they get starved for fuel, have you checked the inlet hose to make sure it's not kinked?

[jeffspider]

I did check the line...no apparent kinks present.

I am working under the assumption that there may have been junk in the fuel that clogged the pump and that has now worked its way to the filter...

She is running very smooth for the last week...if it ain't broke...

Thanks!

[mlynch003]

Some humming is normal, usually noticable but consistant in pitch. This is why they put pumps in the tank now, they are much quieter there.