'94 Ford Taurus fuel pump


Old 10-08-06, 11:18 AM
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'94 Ford Taurus fuel pump

Sometimes this 94 Taurus will not start, starter turns but engine will not fire. I noticed that when the key is turned into the run position, I hear a humming sound coming from the back. However, when the car does not start, No humming sound. Ten minutes later, turn the key, it hums and it starts. I assume the humming is the electric fuel pump which must not work at times. Is this pump in the tank or external? Sometimes everything is OK for a whole week and then out of the blue, no humming, no starting. What do you think?
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Old 10-08-06, 11:47 AM
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Check your fuel pump relay. You pump should turn on for a few seconds prior to starting then shut off when sufficient pressure is achieved. If the pump does not turn on at all, the could be a bad pmp or relay.
Old 10-08-06, 02:11 PM
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Pump or relay

Do you know where the relay is located? Also where is the pump?
Old 10-08-06, 07:19 PM
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it's the box with about 30 wires centered above the radiator under the plastic shield w/ emissions labels

next time it won't start hit it really hard and try to start it again

the same relay operates the cooling fans and is about $160 from the dealer.

pump is in the tank and is cheaper, but harder to get to.
Old 10-09-06, 04:41 AM
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Most of the time it's a fuel pump. Ford dealer's have a tester that they can hook up on that Constant Control Relay Box and test it.

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