Question about 2005 Ford Taurus

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2005 Taurus no start, new fuel pump, pcm reprogrammed (flashed)

I've owned this car since it had 31,000 miles on it. It now has 125,000 miles. It has shut down for no apparent reason four times since I've owned it. When it does this, it remains dead for weeks when all of a sudden, while I'm attempting a repair, it restarts and runs fine for months. Then it will just shut down while being driven, on it's own and refuse to restart. The third time, it didn't crank even though the battery was completely charged, it acted as if it was completely dead except for instrument panel display. This car has digital mileage and information display. At that time, it would only show door ajar and no oil pressure, no more information, and would not crank. It was the time before this that I replaced the fuel pump and it still didn't run but it would crank. Then about two weeks after the fuel pump replacement, it miraculously restarted. Then, the third time I took it to the dealer to have the computer checked and they flashed it and got the car running even though I brought it in with it not cranking. Now, one day after getting the car back, it is back to not starting but it will crank. Instrument cluster shows normal info but when you turn the key back to run, the gauge needles vibrate against their stops for about ten seconds and then stop. During this time, the fuel gauge stops showing fuel level until the vibration stops, then it shows level again, in this case half a tank. It has done this before with the instrument cluster.

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Hi, I have seen this problem before, with the same things you are telling me happening. With the fuel gauges and other gauges doing what you are saying, pegging out and then just dropping, I don't have to guess what is going on. Most all of your electrical wiring comes from a couple of harnesses, coming from under the dash and up the steering column, and all end up at at plastic circuit board to the ignition switch. When this part of the switch starts to have problems, it will send false codes to the PC and cause all kinds of trouble. If you have a manual on this vehicle you can read the section that tells you how to remove the plastic column covers starting on the right side of the drivers seat. I can't believe Ford has not checked this in there trouble-shooting!! This is a electrical problem you have been having for 2 years. Where all of the wires enter the plastic covered board, when you turn the key on and the gas gauge is not working, or it cranks but does not start, take the **** of a screw driver or the end of a wrench and tap on it. also, grab the wires in that area and move them around as you watch the gauges or when something is not working and see if they ( needles ) jump around or it starts right up and runs, you have a faulty ignition switch. This auto and many more, this is where a ton of the main control wires meet and branch off through the ignition switch. 12 to 15 small wires that control starting, will cause the motor to just stop, cause your gauges not to work or jump back and forth, its amazing what this switch controls!! So, if you can get to this section under the steering wheel, and move the wiring or tap on this and see if there is any movement at all when something is not working, gauges, starting and so on, you have a short in the switch it self. This is a fact. Please let me know the out come on this. I will check back on and off.

Posted on Jul 30, 2010


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