rough running/stalling/no power when over 100 degrees outside

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texasturtle

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Feb 28, 2011
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Location
Arizona
I have a 2000 XLT 5.4 Expedition and have owned it for 10 years. It's regularly serviced and all the plugs/coils were replaced 2 years ago. All the filters are regularly changed including the fuel filter (6 mos. ago). When the temperature outside is over 100 degrees I loose all power, the vehicle stalls, it sputters, and it misses. I have had it to 5 different Ford dealers and 2 independent shops and no one can fix it because it doesn't "throw a code" so they can't find the problem. Additionally, everything electrical on this truck goes wacky sometimes. Door locks don't work, odometer goes off, windows won't work, etc. Can these be related? Does anyone have any ideas how to fix either or both problems? HELP ME, PLEASE!!
 
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