Fuel pump on 64 Impala is pumping but no gas from tank.
The fuel on my dad's 64 Impala will pump fuel from a can but nothing comes from the gas tank. I'm think clog line but someone told me to but a ground wire on the tank. Not wanting to drop the tank but we may have to. any suggestions?
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Re: Fuel pump on 64 Impala is pumping but no gas from...
Ground wire in the tank won't do you any good,You can hook a low pressure air line to the fuel line under the hood and blow the clog back into the tank and then run an inline filter as close to the tank as possible.That way the filter will catch the clog and you can just replace the filter when that happens.
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There should be an air vent coming from the top of the gas tank back to the top of the fuel tank. Possibly kinked or pinched, try pulling the fuel nozzle about half way out and filling the tank on the lowest setting the fuel pump will let you.
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Yes there are two fuel pumps of there are two fuel tanks. One in each tank. I assume you tried both tanks? Best way to diagnose, put fuel in both tanks, and check each one. The fuel pump relay in under the hood on the relay bank driver side fender. You can provide power there on the lug going to the fuel pump. So, make sure the tank selector is working properly by setting the selector on the left tank, then turning the key to on, you should hear the pump come on for a couple seconds. Then do the same for the right tank. You need to make sure that the same pump is not coming on. Listen to each side. If that works, then the relay is OK too, and you have ruled out the pumps. Then check the valve that switches the tanks, see if there is any debris in it, or if it is even switching tanks.
Also check your fuel pressure at the fuel injector rail.
Hi, the fuel pump is located in the fuel tank and to get to it you have to lower the fuel tank from the car, make sure you have used all the fuel up as it will be to heavy to handle if the fuel is left in it, you need to make sure the car is high enough off the floor to get the fuel tank lowered enough to get the tank lowered.
if your doing this yourself then make sure you have some good axle stands to put the car on before you do any work under neath,
check under the back seat to see if their is an access panel to the tank but im pretty sure their isnt check first just in case im wrong but from what i remember you need to lower the tank down to get to the pump.
my impala,s back seat folds forward,pull up trunk carpet from back seat.remove inspection plate,then undo fuel pump from tank,sending unit on fuel pump has brass fingers that touch a contact surface,carefully remove clip holding float to pump,you need to bend carefully the fingers,so that they will contact better.reasemble play with float to make sure fingers stay in contact with contact surface.
Check fuel pump relay and take off fuel pump relay. And check connection. Test fuel pump i remeber green wire or green. Putting other side your battery plus connection And hearing nose (sound). Thats simple test your fuel pump test
My 2002 Impala has the panel in the trunk. I took the panel off and the fuel pump is accessible. I will probably attempt to replace the fuel pump myself since the fuel gauge does not work anymore and the dealership indicated that the problem was the fuel level float connected to the fuel pump.
Does anyone know if there is anything special I need to do prior to replacing the fuel pump, such as draining the fuel, etc...? I was planning to at least run the car until I was near empty.
fuel pump operation on your impala is controlled by the computer. It activates the fuel pump relay when ignition is turned on, but only for a few seconds. This is called the fuel pump prime. When the computer senses a crank signal (upon start up) it will activate the fuel pump relay constant. I have found more problems with the fuel pump relay than anything. Vapor lock will not cause a no start unless it is in the fuel lines. GM systems use the manifold air temp sensor to allow for quick starts when hot......increases fuel injector on time. An intermittant fuel pump relay or bad pump will cause a no start any weather.