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I can't speak for someone else's diagnosis having never touched the car myself. It sounds like he was guessing the first time. The reason is that the coils are just about bullet-proof, they rarely go bad, and when I have had a bad coil, it has always failed on only one cylinder, which causes a skip, not a total shut down. From what you say, it sounds like the fuel pump is a more likely cause. Even though it's putting out 40PSI, that doesn't mean it is doing that all the time. Ususally a bad fuel pump will operate normally when it is cool, but after it runs awhile, and heats up, it starts acting up. Your technician needs to hook up the fuel pressure guage, tape it to the windshield, close the hood without pinching off the hose, and go drive it until it shuts off, to be sure that he has it right this time. If it shuts off and the fuel pressure stays somewhere around 25-40 PSI, then it's not the fuel pump, or relay. It is a different system entirely.

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โˆ™ 2011-09-14 08:50:30
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Q: Your Ford Windstar dies without warning mechanic replaced ignition coil did not work now is telling you fuel pump fuel is the prblem pump pressure is 40 but did not tell you about fuel pump relay what?
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