2003 OLDS ALERO WONT START

Fuel pump or relay most likely pump make an model would help to know

I bet it's the gas. After some time the gas will no longer be volatile enough to start the car. Try draining all the fuel and putting in some fresh gas. Remember, when you try to start it again you'll need to get the new gas through the pump and lines before it will start. Also, check the condition of the injectors. Old gas can start to break down and build up a film that could be on your injectors (or clog your fuel filter- better check that too). Hope this helps.

Could be a small amount of rust got into fuel filter from sitting empty, try changing fuel filter before worrying about the fuel pump.Filters could be partly plugged and its always smart to start with the cheaper fixes first.

Something wrong with the pickup tube on the pump.

check the tank is it plastic... if so drop the tank pour gas in bucket if black stuff in the gas take a water hose and spray it out wait till dry put it back on and put gas and try to start it,,, if fuel pump in tank replace it... please let me know how it turns out,,, good luck

Did you have it to a qualified repair shop ?

Okay, you need to make sure the fuel pump is getting power and that you have the lines hooked up correctly. Also, when you replace fuel pumps you need to remove the air cleaner and use starter fluid to get the engine started.

On the injector pump is a shut-off switch, be sure it is in the on position.

In a HOT day,old battery and fuel pump will be the prime troublemaker.

You need to charge up the battery and check for 12.4-13.6V range.

How old is the battery?

Most are warrenty for 24,48 or 96 months.

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Fuel pump motor portion will ran forever. But the plastic diaphragm will give out in a hot day.

Do a fuel injector pressure test. Below 40 pis is trouble.

Fuel filter should be change if the fuel pump is at fault.


ALL more gas until it's over 1/2 tank and re-test.

A weak fuel pump will take more effort to pull fuel from a near empty tank.

Good luck,

Check to make sure the Security light in dash on right hand corner is not on. If it is on , your passlock is enabled. to dissable it turn your key on but not start it and wait for apx 10-15 minutes. this should re-set it.