Question about 2008 Citroen C5 2.0

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I did put power on the pump and it works.i did put power on the fuel fuse and the pump is working.what can the fault be?

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Check the fuel pressure regulator / switch

Posted on Apr 19, 2015

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Posted on Jan 02, 2017

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1 Answer

'91 volvo 940 turbo only go so far b4 fuel pump relay & d # 1 fuse (ignition & fuel pump) get 2 hot when do I have 2 sit 15 min. 4 d fuel pump relay & fuse 2 cool D alternator is fine what cause this


I suspect the fuel pump circuit is drawing to much power. Do you have something else hooked into those wires(Audio equip?) The fuse is there to protect the relay. Have you put a bigger fuse (bigger number) in there to keep it from blowing the fuse? If not I suspect a bad fuel pump or a stuck fuel pressure regulator(Causing the pump to work too hard- drawing more electrical power) Just remember, its hard to put the smoke back in once it catches fire.

Feb 26, 2016 | Volvo Cars & Trucks

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No power at fuel pump fuse


You need to trace where you are losing power, determine first this by taking 12volts from the battery to the fuse you say is the fuel pump fuse if you are correct then you will hear the pump start. If not then the fault is elsewhere if pump starts the you know the fault is from the fuse back

Apr 22, 2014 | 2001 Volkswagen Cabrio

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

1 Answer

Will not start will crank will start with starting fluid but when quit spraying eng quits


`Probably the fuel pump in the tank has stopped working. Verify with a check for power at the gas tank connector: When the engine is cranking, the fuel pump wire should have power on it-use a test light or voltmeter. If the wire has power, but pump will not turn on, the gas tank will have to be removed to replace the pump.
Just by turning the key to on, not start, will or should cause the fuel pump to come on for about 2 seconds to pressurize the fuel lines and put gas under pressure against the fuel injectors. If you don't hear the pump buzz on for a brief time, you know you need to check the fuel pump circuit. Check fuse, check fuel pump relay...but the easiest way to verify a bad pump is to check fuel pressure, or check for power at the gas tank when the engine is cranking. No power is a fault in the circuit (fuse, relay, wiring), power available to the pump but no pump means the pump will have to be replaced .

Oct 17, 2013 | 2001 Ford Windstar

1 Answer

I have a 95 nissan maxima...i have put new spark plugs, camshaft sensor, 2 crankshaft sensors, electric ignition...and checked the relay plug and fuse that goes to the fuel pump...and something is still...


the fuel pump is toast, use a volt meter or test light to check for power at pump, if receiving power then pump is faulted, if not receiving power follow wire testing at every connection until you find power. once you find power you will most likely find part at fault if not pump

Mar 19, 2012 | 1995 Nissan Maxima

1 Answer

I have a 06 f150 5.4L the fuel sending unit went out so i had to change to pump and everything, the pickup ran fine before but wen i put the new pump in it will not work so i tried resetting the fuel pump...


Hello, There is a fuel pump Relay in the Powerbox under the hood. The system works this way. When you turn on the Ignition switch, it trips the Fuel pump Relay. The power is routed to the fuse from the Relay and then to the Inertia (safety) cutoff switch. Finally the power reaches the Fuel pump.

You need to test the fuse holder for power before it flows through the fuse. You should have the Ignition on, in order for the Fuel pump Relay to provide power to the fuse. Although the fuse may be good, it can not work without power.

On most Models, the horn Relay is the same part as the Relay on the Fuel pump. Just check your part numbers and swap out the two parts and see if it helps.

Jun 24, 2011 | 2006 Ford F-150

1 Answer

My car wont start,you turn the key , and sounds like it's going to start but it just wont' i already take to the mechanic he had the car for about 2 months i get the car back ; he said it was fix and now...


FIRST GET A SPARK TESTER TO SEE IF YOU ARE GETTING SPARK AT SPARK PLUGS.IF NOT CHECK IGNITION MODULE FUSE.IF FUSE GOOD HAVE CAR HOOK UP TO SCANNER LOOK FOR IGNITION MODULE FAULT CRANKSHAFT SENSOR FAULT AND PCM FAULT.IF ALL LOOK GOOD SO FAR.CHECK TO SEE IF FUEL PUMP WORKING.CHECK PUMP FUEL PRESSURE IT SHOULD BE 41 - 47 PSI. IF NOT REPLACE FUEL FILTER STILL LOW REPLACE FUEL PUMP.IF FUEL PUMP NOT WORKING AT ALL CHECK FUEL PUMP FUSE AND RELAY.IF BOTH IS GOOD FUEL PUMP AT FAULT.BUT SCAN TO CHECK FOR PCM FAULT CODES IT CONTROL SPARK AND FUEL SYSTEM.MAKE SURE SPARK PLUGS AND WIRES IS GOOD. ALSO CHECK FUEL INJECTORS FUSE ALSO.

Jun 08, 2010 | 1999 Oldsmobile Alero

1 Answer

Lost Power to Fuel pump


There is a fuel pump fuse in the fuse box, also there is a fuel pump relay under the hood in the power control box, One of these is ur problem.

Mar 06, 2009 | 1999 Oldsmobile Alero

1 Answer

No power from fuse to fuel pump


fuel pump works fine but gage isn't working any one got any idea?

Oct 12, 2008 | 1994 Saab 900

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