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Could be a plugged fuel filter; very old gas (car has been sitting unused for some time) has pasted through fuel filter and clogged it. Fuel pump in gas tank is weak and the electric motor in fuel pump runs, gets hot and stops. Have someone listen behind the back bumper away from muffler. The sound of a fuel pump can be heard close to the underside of fuel tank (high pitch whine). If the sound stops before the car dies...that would indicate a faulty fuel pump.
Fuel pump in the tank makes a high pitch sound which is normal. Turn your key in the ignition, but don't start, you should hear the high pitch sound with the pump priming the system. You will still hear it when started, it's annoying but normal. Different brands are quieter than other, I just replaced mine with a Delphi brand fuel pump which is a tad quieter than AC Delco stock pump.
The power through the fuse is to the fuel pump, this only runs long enough to pressure the fuel behind the injectors so that when they open the fuel is an high pressure. So you will normally hear it when you put the key in and turn it, before you start the engine, and then while driving it will be on. Your fuel pump is running longer than usual, because the fuel is not getting up to sufficient pressure. This would also account for the poor running. If you do not have fuel leaking all over the floor, the first thing to replace is the fuel filter. These get dirty over time, especially if you ran the tank dry in recent months. If its blocked the fuel pump tries hard to suck fuel from the tank through it and fails.
How much gas is in the tank? Is the gas old? If you only have a few gallons in the tank i would advise you to put 5 gals of fresh gas and a bottle of sea foam gas addititve.. if you gas is old it starts to turn to varnish and gets sticky, it smells really bad too.Go to auto zone or wal mart to get the sea foam and add it to a five gallon gas can then add your fresh gas into you car tank..You can also get the sea foam in a spraycan form that you can spray directly into your air intake..Can you hear if the fuel pump is running? Take your gas cap off and put your ear up to the filler tube to see if you can hear you fuel pump working, it sounds like a high pitch whinning sound..Have someone turn the key on while you listen for it..
as for the noise if it is a high pitched whine that you can hear while the engine is running its probably normal...most of them sound like this. it should be the same sound that comes on briefly as you turn the ignition on before the engine starts. if it is extremely loud, it may be a build up of debris in the filter causing too much back pressure on the pump or the pump may be on its way out. as for the blue smoke.... blue smoke is oil burning in the engine. you didnt say how many miles are on the vehicle but as a vehicle ages it will usually consume some oil as the engine is running. if the smoke only comes out on start up its probably due to the valve seals weeping a tiny bit of oil thru them and its burned up once the engine is running. its not too much to be overly concerned with at the moment, just check your oil level in the engine a little more frequently as now you know that you are consuming some oil at times. also switching to a "high milage" oil may help as they have conditioners in the oil that slightly swell rubber seals in the engine.
First of all $900 for a fuel pump? You got ripped! Sorry ,I just replaced one myself and fuel pump only cost me $214 with life time warenty. if you are the least bit mechanically inclined? Get a piece of plywood about 2ft-x2ft and place on floor jack under gas tank ,siphon as much gas as you can out of gas tank,mark the three lines on the passenger side of the gas tank on top(1,2,3)and dis connect,.jack upplywood to gas tank to hold weight while loosening 2 metal bands(straps) around gas tank, there are 2 bolts on each strap, lower tank to ground and slide off jack,jack up rear of vehicle to slide gas tank from under vehicle, remove the "C" clip to release fuel pump from gas tank. reverse this procedure to reinstall new one. The only problem I had was the new O ring gasket that came with new fuel pump was too stiff not allowing enough clearance to install C clip so I used the old O ring gasket and had no problems. That occasional popping could be a cv axle assuming you have all wheel drive.