Question about 2004 Pontiac Grand Am

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Replaced fuel pump on 2004 grand am still won't start

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If your car still don't start even though that you have change the fuel pump. It seems that its not just a fuel problem that you have .A side from the fuel pump you also have to check the spray nuzzle ,the primary filter ,the secondary filter and the fuel lines . If there are dirty then clean . But if there are worn or destroyed of these said spare parts then replace .And then check the electrical system of the car.You also have to check the the battery ,the ignition switch ,the ignition coil, the starter solenoid ,the ignition assembly and the alternator. you also have to check the fuses ,The electrical connections.if there are malfunctioning parts then you have to repair them.If the battery is corroded then you have to clean it . if there are worn out parts then you have to replace them mostly the fuses. If a certain vehicle wont start it means that there is no power that is running to the car . That is why you have to check the electrical parts of the car.But if you don't have time to do it then you have to go to a car mechanic to do the job . The mechanic have to check on the electrical system of the car and also the fuel pump assembly and the filters, secondary and the primary filter , the spray nuzzles the , the fuel lines. The electrical parts as been said the ignition switch ,the alternator ,the starter solenoid, the fuses, the wires,the ignition assembly, the battery . if there are worn out parts then mechanic have to replace them .If there are malfunctioning spare parts then the mechanic have to repair them .If there are dirty parts or corroded then clean them.And always check if the sensor unit is still on or working as well as the check engine .Because if still there are problems in the engine check engine and the sensor unit will still lights on.If these two are not any more lighting on then there is no problem in the car anymore.

Posted on Sep 26, 2009

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2 Answers

My 2004 grand am will turn overbut not start...fuel pump?


spray a quick mist of starting fluid into air cleaner hose. Reinstall. If vehicle starts then shut off, suspect possible faulty fuel pump relay, fuel pump fuse, fuel pump, or wiring

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Well then if no pressure at fuel rail then go to pump and in line filter as the in line filter might be the main problem but the pump pressure can also be faulty if filter is bad so check it out and let me know how you get on. Ron

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I put a new fuel pump in and still wont start


ok if the fuel pump is energizing and you can hear it turn on then the pump is working fine and you probably have a restriction. i would replace the fuel filter. when you replace the pump did you replace the strainer on the pump? if not then thats where your problem lies. also could be the fuel pressure regulator also. there is a schrader port on the fuel rail try taking a pen and press down on the core to see if fuel squirts out. or connect a fuel pressure guage to the port and see if you have the right fuel pressure. it should run between 35 and 47 psi

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1 Answer

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