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I changed the fuel pump in my 1994 Saturn... and the fuel pump.. still no gas to the engine. The fuel pump is working, but can't figure out why no gas.
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there is one in the inlet of the pump, inside the gas tank. there is another one in the fuel line and if you look in the engine bay just forward of where the driver's footwell is you will see the fuel line coming out from under the car. The filter has fuel line so you are replacing the last 20 inches or so of the fuel line. find the part on autozone or advance website and then look under your hood. kind of tough to get at as i recall. jack stands or a lift could come in handy.
the float assembly is part of the fuel pump assembly and is in the tank. the fuel tank will need to be dropped and call your local dealer to see if they sell the float seperately or as a fuel pump/level sensor assembly.
Try checking and making sure you are getting fuel to the fuel rail there should be a serator valve on the line on the engine. If you are not getting fuel to it make sure the fuel pump fuse and relay are in good working order. Check and see if you can hear the fuel pump running. If you are not getting fuel to the rails and can not hear the pump running the pump is possibly bad.
The two most common things that cause this are a float in the gas tank or a wiring problem. The float may not be giving a proper signal to the the engine control module (ecm). The float is located in the gas tank and you need to remove the gas tank and fuel pump in order to get a good look at it.
What i would do first is check the resistance of the signal wire that goes from the float to the ecm. If it is at, or less than, .5 mill-amps then the wire is good and your float is not working properly.
relief fuel pressure.remove air intake duct .the dohc engine remove the fresh air hose inlet hose from cam shaft cover.disconnect large under hood fuel line.near intake manifold support bracket on the left side of vehicle. look under vechicle where gas tank is there is a fuel filter with disconnects.
This injector set-up needs a specific fuel pressure supplied to the fuel rail to even start, much less run properly. The fuel pump is immersed in fuel inside the gas tank to keep it cool and not burn up. Running the fuel level low causes more heat in the pump and interuptions in proper fuel pressure. AC/Delco pumps have proven to be a reliable fix, the aftermarket pumps only last for a month or two sometimes. Check fuel pressure under the hood and power and ground to fuel pump at electrical harness at top of gas tank. This truck needs a fuel pump.
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