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Fuel pressure on a 99 saturn new pump pumps wont come out of new filter to fuel rail no codes checked a All fuses good battery

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Test the fuel pump electrical circuit. GM Fuel Pump Relay Testing

Posted on Dec 27, 2016

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99 grand cherokee wont start changed crank ,cam, map,fuel filter/relay back by the tank,got 53psi on the fuelrail,new computer new relays


just a couple thoughts. Injector fuse and relay(does fuse and relay have power to and from them). My understanding is sometime Anti theft will shut down injection pulse so car can not be run. Maybe even timing chain broke. I assume there is no trouble code.

Aug 05, 2017 | Jeep Cars & Trucks

1 Answer

How to troubleshoot a no fuel problem, no fuel at fuel rail in a 2000 olds sillhouette.


First check there is battery voltage to the pump and the pump starts when the ignition is switched on , if not check fuse and relay, check wiring from relay to pump. If ok and the pump is working , check for fuel blockage from the tank inlet to the pump , some have a sock type filter in the tank pick up tube, if all ok remove the fuel filter , switch on and fuel should flow at the filter, fit a new filter, if still no fuel at the rail fit a fuel pressure gauge an check for low pressure , if ok, the fuel pressure regulator may be stuck causing a air lock replace it.

Apr 15, 2015 | 2000 Oldsmobile Silhouette

3 Answers

I have a 2004 grand am. the motor turns over but wont start. I changed the fuel pump, the ignition is good, fuses are all good but it will not start


first check the fuel filter. check before and after the filter if you get fuel before it then check after it, no fuel before go back to the pump. if you get fuel after then go to the fuel rail on the motor. open the line before the pressure regulator, if you get fuel then check after the regulator, if none after then the regulator is bad, if the regulator is vacuum assisted check your vacuum.

Apr 17, 2014 | 2004 Pontiac Grand Prix

2 Answers

No Fuel Pressure


More likely the pump is not putting gas up to the engine's fuel rail.
With key on, not start, the pump should turn on for 2 seconds to put pressure in the line and fuel rail. Do you hear the buzz or hum from the tank with key on?
Did you put a fuel pressure gauge on the fuel rail's test port (shraeder valve), and find no pressure with key on? If so, you will need to check into the pump operation (assuming the fuel filter is not clogged). A quick test is to pull off the gas tank electrical connector, find the fuel pump wire in the connector, and use a test light grounded to a metal frame or a voltmeter. Check for power on the fuel pump wire, while the engine is being cranked over. If power then, your new pump is not working. It could be the ground for the pump, so you need to check that. If no power to pump, engine cranking, then you will have to find the fuel pump relay under the hood, and check the wiring to it. There is also a fuel pump fuse-it may be under hood or in the instrument fuse panel-need to find and check it.
If the pump is working and the fuel filter is clean, you should have gas in the fuel rail (which supplies the injectors with fuel under pressure). I have not heard of a pressure regulator problem that could cause no pressure, but then...
Post back what you find, or with comments. Hope this has helped a little.

Apr 12, 2014 | 2001 Saturn L-Series

2 Answers

My 2001 Saturn, will start but not stay running. We have checked the fuel pump and all fluids. Did a compression check this morning, fuel injectors are not injecting fuel into fuel rail. Why is engine...


You said, 'fuel injectors are not injecting fuel into fuel rail' but it's my understanding that the fuel rail gasoline is supplied by the pump, and the fuel injectors just pulse to allow fuel to get to the cylinders. I would check out the fuel delivery problem further. Check for pressure in the fuel rail that is within specs.

If not, then the pump or fuel pressure regulator may be the problem. Check the fuse for the fuel pump. If good, then the pump may be bad in the tank.

Good luck on this.

Feb 05, 2011 | 2001 Saturn L-Series

1 Answer

My 2000 chevy S10 wont start I changed the battery and it ran fine for 2 days now it will turn over but won't start


Check Fuel Pressure. First turn key to on position (without starting) and listen for the fuel pump motor. If no motor sound, your fuel pump is not working. Check fuel pump fuse and relay. If fuel pump works, check for pressure at the fuel rail (schrader valve on fuel rail for pressure testing). If no pressure, or not enough, fuel filter might be clogged or fuel pressure regulator may not be working properly. IF fuel is not the problem, start checking electrical, such as ignition control and proper spark to plugs.

Aug 14, 2010 | 2000 Chevrolet S-10

1 Answer

99 chevy express van 5.7 wont start after sitting for a day. fuel pump is new,it has spark,and no codes.


A new fuel pump can go bad but you need to know if the fuel rail has pressure or fuel in it the next day. Take something and press on the shradder valve on th fuel rail and see if you have any fuel. If not the fuel pump may be installed wrong.The fuel rail should have some pressure all the time for quick start up. I do not know if this helps but it is a start.

Jun 26, 2010 | 2001 Chevrolet Express

2 Answers

2000 saturn will not start it has no trouble codes


i would first check the battery to make sure wires are on securely and then if they are take to auto zone to make sure it holds a charge. if it turns over but will not start check that your fuel pump is working by checking the pump itself or checking that there is pressure at the fuel rail. if there is fuel check that your spark plug wires and plugs are all working. could be a lot of things but this is where i would start. DO YOU HAVE GAS????

Mar 11, 2010 | 2000 Saturn SC

3 Answers

Truck wont start


you have to replace your fuel filter, and just get a new pump in case
good luck

Aug 24, 2009 | 2001 Ford Super Duty F 450

2 Answers

I have an 2002 saturn sl and it won't start in has been parked for about a year. could the fuel pump be clogged and is there anything i can put in the gas tank to unclog it. The fuel inlet at the fuel...


Your fuel pump is in the gas tank, You should be able to hear it begin to pump with the key in the on posiiton (not start) You should hear it pump for 5 seconds.
Also replacing the fuel filter is a good idea as well.
The valve you are talking about should be tested with fuel pressure tester. It should be about 75psi.


May 11, 2009 | 2002 Saturn Sl

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