Question about 2004 Pontiac Grand Am

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

It doesn't seem like its getting enough gas...there is gas in it

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  • Expert
  • 202 Answers

Do a fuel pressure test at the schrader valve located on the rail

Posted on May 30, 2014

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  • Pontiac Master
  • 2,210 Answers

Check the fuel pump relay. It will be under the hood in the fuze box or in a separate box of relays for lights aircon etc. It may be independently fuzed but the underside of the lid should help. If you don't feel it click on startup see if there is another the same for lights etc and temporarily swap them.
When you crank you, or helper, should be able to hear the pump running under the car near the gas tank. A high pitched whirring / buzzing noise.
If you have the knowledge to carry out this task carefully, then slightly release 1 of the fuel injector connections, have a rag ready and see if fuel is released on cranking. Use a connection as far away from the ignition leads / coils etc to reduce risk of fire. The pump could be putting out 40+ psi so take care!!
If there is pump noise and fuel emitted then the next thing is the cold start system which also has a relay, you should be able to feel both relays(pump and cold start) click with your finger on them when helper cranks up. The cold start system runs for a few seconds until the engine has established enough warmth to continue running.
Come back to us if you are still in trouble, try and note everything its doing or not doing?

Posted on May 22, 2014

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Posted on Jan 02, 2017

  • 14036 Answers

SOURCE: 97 gtp turns over wont start..fuel pump runs enermidintly

yep i seen it in happen .i was at a gas station a guy drove car to the gas station on empty.he fill his tank up .could not get it to crank .some cars you have to restart fuel pump when run out of gas. like chrysler.you use a scanner. but chervrolet you run low over heat damage the pump.it has to stay submerge gas to keep it cool. check fuel pump pressure.it should be 41 - 47 psi.

Posted on May 05, 2009

emissionwiz
  • 76164 Answers

SOURCE: how will i know when my 2004 grand am's water pump

the fuel pump will cause a no start, no other symptoms in most cases, the water pump will leak coolant and in some cases rattle

Posted on Jul 14, 2009

kollak81
  • 11 Answers

SOURCE: 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

Posted on Aug 09, 2009

  • 491 Answers

SOURCE: fuel pump location 2001 pontiac grand am

The fuel pump is in the fuel tank.Sit in the car.....turn on the ignition switch to run.....listen very closely to the rear of the car...or have someone kneel down by the back wheel.....you should hear a "prime cycle"......the pump running for 2 or 3 seconds if the key was off for 15 seconds before trying this.If you hear silence you most likely need a fuel pump.Before pulling the tank down....check for power on the gray wire at the fuel tank connector just ahead of the rear axle under the car.Check for power with a test light that will last for 2 to 3 seconds as you turn on the key to run.Power means you really most likely need a pump.No power means you may need a fuse or a fuel pump relay.

Posted on Aug 11, 2009

jigsaw_9077
  • 308 Answers

SOURCE: replaced fuel pump on 2004 grand am still won't

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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