Question about Ford Taurus

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Either the fuel pump isn't getting power, or is junk, but i would like to test before i replace the fuel pump. what i need to know is which color (pink, orange, yellow) wire is the power tot he pump.

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Before you get to the pump be aware that ford has a inertia (spelling ?)switch that cuts off power to the pump if the vehicle is bumped hard or jolted.They are usually in the trunk and can be re-set by pushing the tab on it!

Posted on Aug 05, 2010

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My 1995 GMC jimmy isn't getting power to the fuel pump, I put in a new relay and thats not it , What do I do?


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I need to know what the blue and orange wire does on the fuel pump. it isn't connected to ground and it isn't getting any power to it


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I bought a 2000 Nissan Sentra GXE with a 1.8L. It started running weird and the SES light came on. Took it to a mechanic and did a diagnostics test that said misfire on one of the cylinders (don't...


Well, to start with, there are a whole lot of things (including a bad fuel pump) that can cause a cylinder misfire. A misfrire code does not mean that you automatically start replacing ignition coils.
The fuel pump is not supposed to have power to it any time the ignition switch is on. It will only have power for about 2 seconds to "prime" the injectors, then it will remain off until the engine starts and gets over 500 RPM.
Did you test any of the ignition coils to see if they were in working condition before you replaced them?
Did you test the ECU relay to see if it was functioning properly before you replaced it?
If the mechanic was able to scan the ECU and get codes ot of it, the ecu relay HAD TO be working at the time...WHY did you replace it?

ECU failures are extremely rare - especially on Nissans. However, poking around in the engine control circuits without knowing what you are poking on is a REAL GOOD way to GET an ECU failure!

I recommend that you read the following article and get back to me if you need further assistance:

What Else Could Be Wrong?

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My 1999 masda 626 won't start. it turns over but acts like it isn't getting any fuel.


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but check the pump relay first to make sure and to begin with simplest
it seems you can tell it is the pump but you don`t know where to start

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try cleaning the connector that goes to the fuel pump, sometimes they corrode on inside. If that does not fix, test the wires feeding fuel pump with a multi meter until the condition shows itself again, if voltage drops to zero or very low then wiring problem, if voltage is unchanged with problem and fuel pump is not working and connectors are all clean, try replacement of fuel pump.

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1 Answer

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