I know that you want a simple answer but, have you done any troble shooting steps at the pump its self? when the relay is in does it pump at all? what is your lin pressure?
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Hello, I would replace the fuel filter. Sometimes the sediment gets sucked up by the fuel pump when run out of gas and clogs the fuel filter. Good luck.
most likely you have a bad crank sensor or fuel problem you need to check fuel pressure ,if you have enough pressure ,most likely you need crank position sensor,if you don`t have fuel pressure ,it might be your fuel pump relay or the pump, i would start with the relay first very unexpensive. you can also hear the pump if it`s working by cranking the engine and listening rear of the car for a humming sound . good luck
Make sure the battery has a full charge. If it cranks good but won't start, have a helper crank it while you visually check for spark at the spark plugs. If spark everywhere, use a gage and check proper fuel pressure, also, check fuel injector pulse. If your missing everything, check cam and crank sensors.
With engine cranking check primary voltage to coil and fuel injectors, brown wire with white tracer. If no voltage leads back to asd relay. I'm not saying that relay is faulty. You can see fuse for that relay, that fuse circuit is hot all the time. The computer grounds the control side of relay if it sees proper cam and crank signals.
i have a 95 honda civic and it will crank but not start, ive heard they have a common fuel pump relay problem so i bought a new 1 and also a new fuel pump but yet still the car will not start. we i turn the key the fuel pump does not engage and am stumped. ive checked all the fuses but there all good. any ideas please help . thanks
The fuel pump jump started? The fuel pump relay is in the dashboard relay center. The fuel pump is inside the fuel tank. The pumps do fail entirely nd the fuel pump should make some sound if it's running. The fuel filter is on the firewall on the drivers side. It has a bleeder screw in the top of the bnjo bolt that holds the fuel line onto the filter. Loosening this bolt should release fuel pressure. With the bolt loose try to get the pump running ( knock on the relay, fuel tank, while cranking the engine) if fuel flows the engine should run if you don't have other problems. Low battery will crank the engine but not turn on the fuel pump and or the injection system and even the ingtion system. It may still crank and sound OK. Voltmeter the battery with the engine cranking, Less that 10 volts it's unlikly to start. John
The ignition switch and relay supply the power. Switch to relay, relay to pump. make a set of jumper wires and run them from battery to pump and see if pump runs . If it does its ok. Next pull fuel injection relay (under dash in fuse box)check it for burnt terminals , resistance and continuity. Its a good idea to get a shop manual for this car. This car is a pleasure to fix . After you pull relay for pump get a voltmeter and test the circuit for B+ (don't forget to put key in ignition and turn to the on position.
If you get B+ here switch is ok most likely relay is the culprit.
Remember there are two fuel pumps for this vehicle
One in the tank (accessable via trunk lift carpet and its in the right corner) the other under the car by the tank. have fun and good luck
First check any ignition/fuel related fuses. Check to make sure you have 12 volts coming into the pump and coil. If nothing to the fuel pump replace the fuel pump relay - if you do have power to the fuel pump then replace the pump. If nothing is coming to the coil it is either an ignition relay or a wiring issue. If you have 12 volts to the coil but no spark then replace the coil.
Also the fuel pump/relay would not kill the coil.
Is it not getting spark or gas? It needs both to run. Both main source. If no spark in any cylinder, then ignition module or crank sensor is likely faulty. If no gas, then fuel pressure regulator or fuel pump or fuel pump relay is bad.
Do you have spark?
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