Question about 2004 Mercury Montery

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Starting issue 2004 mercury monterey, once runnig, if you shut it off, it will not start again. it will crank, but it won't turn over. it has happened dozen of times over the past year, and i have tried to keep track of the sequence every time. there is nothing that stays constant. it can have run for 5 minutes and not start back up. it can have run on a 5 hour trip and not start back up. the point seems the engine temp doesn't seem to have a bearing. once stopped, it can take 5, 15, 25 or even 45 minutes for it to start again. Hell, it can just start right back up sometimes, too. over the past 6 months, It seems to happen more frequently. it seems like everytime you go somewhere. the dealer has looked at the codes. they have replaced the keys twice, the ignition once. that is it. they won't just throw things into it and try to solve it. i can't always have it towed right after it happens, i.e. child in the car, it is a weekend, i am away on vacation. any advice or thoughts would be great appreciated. happy new year. mark,

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Assuming the dealer determined that the ECM and ignition systems are not the problem, take a look at the fuel pump. It's easy. The next time you go to start the vehicle put the ignition switch in the ON position (not start) and listen for the fuel pump winding up. The engine won't be cranking so you'll be abe to hear it. Listen closely...its not very loud and only lasts for about 2 seconds. It sounds like ZZZZZP. If you cannot hear it from the driver's seat have someone listen from outside near the rear of the vehicle. Get used to doing this every time you start the vehicle. If you cannot hear the fuel pump and the vehicle does not start when cranking the engine its probably an intermittent fuel pump failure. Take the vehicle to a reputable repair shop as the pump is located within the gas tank.

Posted on Jan 03, 2009

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