Ford Repair: stopping, vacuum leak, vacuum lines

Question
QUESTION: my son has a 2003 expedition with v8 ,interior lights will not cut off. with timer.has to be cut off dash lights and all. the problem is it quits running some times,hot or cold. it always restarts but it is a problem.have you heard of this on others?what could cause it . i have driven it several days but it will not do it for me. once when at night i turned the dash lights on it acted like was going to but it kept running.i messed with lights for a while and it never happened again. thanks in advance

ANSWER: i have several questions. i can probably answer your concern if you can fill in a few blanks. when the interior lights don't shut off is the door ajar light on, on the instrument cluster also for the stopping concern. is the check engine light on ? these vehicles are know for a vacuum leak at a hose about 3/8' thick and 2 inches long located at the throttle body to collapse and leak. the throttle body is where the end of the air cleaner hose clamps on to

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QUESTION: answer to your concern,yes the door ajar light stays on all the time. check engine light is not on. will that help?

Answer
there are two ways to fix the door ajar light and interior light staying on. spray a strong rust penetrant directly into the latch of each of the front doors. a heavy coting. then slam the doors 10 or so times, whats happening is the door ajar switch on the doors is sticking from rust, salt sand etc. if this doesn't work, you will need to take i to your local dealer as their computers can tell which door is showing still open and replace the switch. as far asthe other concern. inspect the vacuum lines i indicated and check for deformities, you can also google this concern and may be able to get a visual of what lines to look for