Question about 2004 Chevrolet Malibu

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No power to fuel pump 2004 malibu 2.2 4 cylinder. am working at fuel pump relay , probing with a light have power to one plugin with ignition on call this 30 or 87 on the relay depending how you turn it next slot below it has constant ground on other side top slot is dead no reaction to test light on pos or neg. and next slot below it has been traced t o make it to wiring back by fuel pump. the one slot i have nothing at apparently is supposed to be hot but from where the pcm or battery i only have one slot that gets hot with ignition on other wise its out one slot is constant hot one slot goes back to fuel pump wiring one slot dead please helpfrom the diagram i got from hayn es the slot bi have with nothing on it goes to pcm and it is a power wire is there something that kicks the pcm wire to power up /// this is the wire for the coil in the relay

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Change the fuel pump wireing harnes gm had a prob with them on all models form 99 to 2006

Posted on Nov 17, 2009


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I have a 03 Hyundai accent I just replaced the fuel pump I have no power to the fuel pump I've checked the fuses and the fuel pump relay it won't start I'm not sure what to do next

Do you have a test light? If not, go buy a cheap $5 test light-one with a lead to clip to a ground, and with a needle type probe.
Pull the fuel pump relay out of the terminals it is plugged into-you need to check if the power feed for the pump is still available at the relay. Clip the test light lead to a ground and touch the test probe to the positive battery post-to check that your ground is good- tester should light up. Now touch the probe to all of the terminals that the relay plugs into. One terminal should have power with key off. If no terminals have power, you have lost the power feed for the pump. Double check all your maxi fuses in the power distribution box. Either a maxi fuse or a fusible link will be the power feed for the fuel pump relay.
If the power feed is there at the relay, try a new relay. If still no pump, a shop will probably have to check your fuel pump circuit.
Did you check for power at the fuel tank while the key was held in crank? When the engine is cranking, the fuel pump wire should have power. When the key is turned to on, the fuel pump should have power for about 2 seconds, to pressurize the fuel system. Then when key is turned to crank or start, the fuel pump should stay on.

Sep 07, 2013 | Cars & Trucks

2 Answers

No spark on coil. Drove in the rain then the motor cut out . Cleaned all th electrical contacts , no water. There is no spark on the coil . Please help . Golf 1 1.3 carb 2004

I take it for granted that you have checked the fuses and fusable links above the battery. Do you have a light on dash orange immobiliser warning light. Yes you have, as it comes on during self test when trying to start. Check to see if you have any power to fuel pump relay. no 409. Remove relay and place an amp meter across the two female terminals and turn key on. You should have a reading of 5 amps. this does two things 1 it tests to see if you have power to fuel pump and 2 that the pump is working correctly. Immobiliser system cuts power to fuel pump. Can do same test at fuse 28 if you prefer. if that all works then you can go back to ignition and check voltage to the coil possitive with multimeter on volts .one probe into the back of the harness plug on black wire with purple trace no 2 wire on plug the other wire to earth
if voltage then check coil resistances. if no volts then trace back to ignition source at fuse box thru key etc.

Nov 29, 2012 | Cars & Trucks

1 Answer

The fuel pump is not getting electrial power don't know where the fuel pump relay is located on the car

Hi, the relays should be in the box under the hood. Check the INJ fuse and the PUMP fuses. If those are good, interrogate the relay socket using a voltmeter or 12 volt test light. Connect the test light clip or voltmeter probe to chassis ground and probe the relay socket. With the key off, there should be one hot terminal. With the key on, there should be 2 hot terminals. If not, the MAIN RELAY is not coming on and you will need to interrogate that relay socket as well. If there are 2 hot terminals in the PUMP RELAY socket with the key on, move the test light clip/probe to battery positive and probe the socket again. You should get similar results from the other 2 terminals in the socket. The pump terminal may be only a dim light, but the terminal from the ECM should be a bright light/battery voltage. If not, the ECM is not turning the relay on--possibly due to the anti-theft system or some other safety feature. Please let me know if you have questions, and thanks for using FixYa.


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Please someone help!!!! i was borrowing my girlfiends accent 2 door 2002 the next day it just wouldn start. the ful pump didnt sound like it was pumping when i turned the ignition on so i spent all arvo...


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Have fuel problem changed 2 fuel pumps wiring and car still runs for 1/2 day then stops again 0n 2004 chevy classic

clean injectors, changed fuel filter, check for hose and pipe for clogging, check fuel pump relay try it by bypassing relay, check oil sender, (3pin Oil sender)

Jun 25, 2010 | 2004 Chevrolet Malibu

1 Answer

2004 chevy malibu 2.2 driving 60 mph shut down

either you have a fuel pump that went out, or your fuel pump relay went. These fuel pumps last around 100,000 miles, so if you're way under that, it's more than likely the relay, if you're close to that, it could be either.

Jun 14, 2010 | 2004 Chevrolet Malibu

1 Answer

No fuel in motor. will not start

when you turn the ignition key to the on position you will hear the fuel pump run for 5 seconds.
if not heard replace the oil pressure switch for the third wire on that sensor runs the fuel pump the first 5 seconds to start the engine. once pressure is operating at normal conditions the relay takes over on the pump to run

May 27, 2010 | 2004 Chevrolet Malibu

2 Answers

How do i check the fuel pump relay and the fuel pump to see which is the bad part on a 99 Yukon 4x4, 4 door model?

The fuel pump relay should have a schematic on it so you can check it with an ohm meter for a short. If it checks ok and when you turn the key on, you do not hear the pump then replace the pump

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Fuel pump relay or emergency engine shut off

something is killing the relays poss fuel pump drawing to much amperage check pump with amp probe is pump noisey?

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1995 Ford Probe sputtering, dying. Won't start now.

This to me sounds like it could be the fuel pump but first I would check the simpler solution and make sure your alternator is good because if your started turns over fine but the car wont start the next part to check would be for me the alternator.

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