Question about 2005 Maserati Spyder Cambiocorsa

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Fuel pump not switching on

Fuel not arriving to the engine fuel pump not working

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Check for a feed to the fuel pump before you go any further .

Posted on Dec 02, 2012


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1989 GMC S-15 4.3 engine

almost sounds like fuel pump got hot,then once it cooled down,it started running again.They say not to run vehicles past 1/8 of a tank because you can overheat the fuel pump

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My second tank on my f150 isn't working, what can it be?

It is likely the fuel pump in the tank has failed, switch it over and have a fuel pressure gauge hooked up to see if you have pressure.

Sep 19, 2012 | 1994 Ford F150 Styleside Supercab

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Car will turn over but won't start. Through the

No noise from fuel pump when you turn over the car .First thing get voltage at fuel pump relay checked, is there 12 volt to the relay.If no, then problem is again the relay.--------- To reconfirm the problem, try other test, that is remove the relay and by pass the relay terminals with a jumper wire .Then with 12 volt external battery give power to fuel pump connector and see, if the fuel pump starts, then its clear that fuel pump relay is faulty.----------- Also other problem can be fuel pump inertia switch.If the inertia switch is faulty then also fuel pump will not start.-------- The fuel pump relay on a 1995 Ford Explorer is in the power distribution
box, in the engine compartment, driver's side near the firewall.----------
The fuel pump inertia switch is in the right front passenger area
it is below the dash but above the carpet in the right hand corner.--------
Its a push button type inertia switch.
Fuel Pump Activation
When ignition switch is turned to START position, PCM operates fuel pump relay to provide fuel for starting engine. PCM senses engine speed and shuts off fuel pump by opening ground circuit to fuel pump relay when engine stops or engine speed drops to less than 120 RPM. When ignition switch is in ON position, EEC power relay is energized (contacts closed). Power is provided to fuel pump relay and timer in PCM. Fuel pump receives power through fuel pump relay contacts.
Inertia Fuel Shutoff (IFS) Switch
All models use an electrical interrupt switch in fuel system. During a collision or vehicle rollover, electrical contacts within inertia switch open, shutting off fuel supply to electric fuel pump. Fuel supply is interrupted even when engine is running.
A reset button is located on switch assembly. If electrical circuit trips, vehicle will not restart until switch is reset. Fuel system should be inspected before resetting switch.
IFS switch is located under instrument panel, near right side of transmission hump.
----------- If the fuel pump relay, the inertia switch and fuel pump all checked ok, and fuel pump is working with direct 12 volt source to fuel pump.Then problem relates to computer.The computer (power control module, PCM) is faulty and has to be replaced.--------- This will help.Thanks.Helpmech.

Jul 17, 2011 | 1995 Ford Explorer

2 Answers

No power to fuel pump, checked gages, fuses and fuel pump, seem to be ok, any suggestions??

If the fuse is good can you hear (and feel) the main fuel relay clicking when the ignition key is cycled on and off? There may be another relay that is the same on the board, if so swap it over temporarily. If relay is working, is there power at the connection to the pump. If not then the wiring is broken. If there is then the pump needs to be replaced

Jun 12, 2011 | 2003 Pontiac Sunfire

1 Answer

At times my Discovery takes a long time to start and today whilst on the M62 it began to lose power. I took the first available sliproad and then the engine cut out. I tried to restart without sucess and...

Just because the fuel pump is making sound, it doesnt mean it is working properly. You are definitely having a fuel delivery problem, most likely the fuel pump. There is the chance the it is a fuel filter. But most likely it is the fuel pump

Feb 06, 2011 | 2002 Land Rover Discovery Series II

1 Answer

My car turns over starts then cuts off

The fuel pump operates off two items upon starting the car. When you first turn the key to the ON position you can hear the fuel pump faintly running inside the fuel tank. If you can not hear it it seems it is working for you stated the engine starts then cuts off. That tells me the engines oil pressure switch is working the fuel pump. On the oil pressure switch this switch has a third wire which is directed to the fuel pump. When the engine reaches full oil pressure the computer shuts off the signal from the oil pressure switch and then the computer turns on the fuel pump relay which stays on until you shut the engine off. I do beleive the fuel pump relay is what you need for it is not working no longer. This will have many relays with the same part number on it. You can easily swap any relay that looks the same with the same numbers on it and try it once to see if the engine stays running.

Apr 09, 2010 | 1990 Oldsmobile Cutlass Supreme Conv

1 Answer

2000 Oldsmobile Intrigue - intermittent starting, starts fine in the morning (usually) arrive at destination and when time to leave will not start or engine dies. Sounds like it will start but doesn't, not...

No. Your description could be several issues. You need to determine if the ignition is coming on when the problem occurs or not, this will eliminate the ignition side of the system from being the problem.
I suspect that the fuel pump is not running when this occurs. Next time this problem happens, just turn the ignition on and listen for the fuel pump. It should run for a short time and then stop. I had this same symptom and it was the wiring (ground wire) going to the fuel pump. Took a long time to actually figure out exactly what was wrong, but we haven't had a problem since.

Apr 02, 2010 | 2000 Oldsmobile Intrigue

1 Answer

Q. Hi I have a 2000 Jeep Grand Cherokee, 4.0 litre inline six engine with 130000 miles on it. I have a weird problem. My jeep won't start on the first try. It will always start on the second try, every...

Have you tried to switch your car on, wait 3 sec's and then start the engine? reason: If the pressure in the fuel system went down very fast, it need some sec's to arrive the pressure it needs to start. Also possible: switch on, wait 2 sec's, switch off, on and start. This does the same I told above. If that works, change the fuel pump or let this item checked be a specialist (it's expensiv to replace it).

Oct 25, 2009 | 2000 Jeep Grand Cherokee

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