The other day my Expedition 2006 5.4 went into "fail safe" energy , shut it off and worked fine , all gauges were normatogether , it never did it aget , cell phone rang and the moment it was answed the Expedition went into "fail safe" energy , coincedence? any ideas? The check engine light never came on. Thanks in advance.

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jamesroneySenior MemberPosts: 257

Noboss,THAT is really cool!!! I have found that the emissions from a cell phone just prior to a new call can do all kinds of strange things. Our Polycom speakerphones will make strange noises prior to an incoming cell call, and I learned that I can remote-control my Norelco electric razor by making a call to my cell phone. The Norelco is completely manual, no automatic anything...but the cell phone will turn it on! It"s all kinda spooky!
cobra427No LifePosts: 1,207
My wife"s 2003 Expedition always takes two turns of the key to start. If you try to start it, it will turn over for a long time and now start, but as soon as you let off the key and hit it again, it fires right up... any ideas on this.Gary
One easy check is to put a fuel pressure gage on the rail and monitor fuel availability at the rail during first crank. You didn"t say whether it took two cranks after an overnight delay, (cold start) or after a short delay after reaching operating temp.Without any tools, you can try this:1. Cold morning...cycle key to ON, wait 10 seconds, cycle key back to OFF, Immediately cycle key back to crank.2. After car is running, but not warm yet...shut off and attmept restart.3. Bring car to operating temperature. Shut off. Attempt restart.I am assuming that the check engine light is not on. My guess is that the fuel pump check valve is leaking and you are losing pressure. After re-prime, everything will be normal.Good luck, James.
I"m a driveability mech at a Ford dealer.There are a number of reasons for your truck to go into fail safe mode.The most common is a problem with the electronic throttle bodies.It could also be because of the trans,over heating,bad misfire or a comunication problem between electronic modules in your truck.The first thing to do would be to test your system for diagnostic trouble codes.That will get you pointed in the right direction.The most common cause is the throttle position sensor which is on the throttle body.Taking it to your Ford dealer would be the best way to go.

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James, I tried the hold the key for 10 seconds, thinking that the fuel presure needs time to build up, no luck. When the engine is cold, it"s starts quicked, it"s when the engine is warm it takes two trys. I have been told that the oil pressure switch may be bad. I"ll look at the fuel rail next.Gary
Update , the Dealer replaced the TPS throttle position sensor and for now it has cured the trouble , funny thing it did not show any codes on the OBD II , thanks again for all your help.
Similar issue on the wife's Freestyle, but would only happen when you were slowing to a stop. The only difference if it would "flare" & you would have to jam on the brakes to keep from rear ending someone or entering an intersection. Of course the dealer service dept could find nothing wrong with it... Guess someone has to die before the tech's will fix anything. Just my experience at the FW ford dealers, I am sure their are better tech's around.Mike
The other day my Expedition 2006 5.4 went into "fail safe" mode , shut it off and worked good , all gauges were normal , it never did it aacquire , cell phone rang and the moment it was answed the Expedition went into "fail safe" energy , coincedence? any ideas? The check engine light never came on. Thanks in advance.
That's not a fare statement. We want to fix your car,that's the ONLY way we get paid! But,we want to fix it,not guess if at all possible.One of the toughest things we have to deal with is intermittent concerns like yours.If we don't get a trouble code out of the cars computer or can't find anything wrong,we're stuck.Because we can't just throw a part on there and see what happens.For one,if it happens again,it is now considered a repeat repair and we have to fix it for nothing.Second,if we just try to do something to your vehicle,like replace a part that could cause your concern and you still have the same problem but this time you get in an accident,you'll sue us in a heart beat.Even though we were trying to do something to help instead of telling you we can't find anything wrong.