2005 Ford Expedition Questions

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Dreaded P0300 random misfire code end of May. Replaced all w/Ford plugs/coils, system check and code cleared mid June but code came back on last week. Just ran 44k fuel injector cleaner, now told could be mass air flow sensor.
it is much better now. check engine light is off and rides much better now. mechanic told me to wait until it "got bad again" to replace the other two and it didn't hurt to ride for while if needed. I am taking it to Florida this next week. When I'm on cruise and going 65-75, it will get a little miss in going up an incline. I just back off and then accelerate and it goes away. When I run super unleaded is not as noticeable. Is it safe to drive 800 miles and should I wait to replace the last two? When the check engine light does come on, it is always the coil packs.
I have a 2005 ford expedition . The check charging system keeps coming on. New alternator and battery, voltage good at alternator and battery, at same time rear wiper wont work and rear lift glass wont open with the rear liftgate button but does open with remote. Have checked all fuses and relays are good too.
My radio/clock/DVD just went out while driving one day. My son tried to replace the fuse, but it blows as soon as he puts one in. Any suggestions?
i recently blew a brake line just beneath the hydraulic brake module.i brought the truck in an had the line fixed,,when i left the shop i had an idiot light of a wrench appear on my dash the manual it says electronic throttle control has gone into limp home mode and truck is running really bad..could this have been done by accident while fixing the brake line or did the mechanic do something to cause problems
150 M miles. About 10% to 15% off road. Rattles seem worse in all four doors and back lift door. Also dashboard. Thanks for any help.

Got PO171 & PO174 trouble codes
replaced all the oxygen censors and the coils and it still has a bad miss and flooding problems and engine will come on and then blink ,go out and come back on
And the wiring looks good. O2 sensor is good but still getting the code that it is bad.
codes have pointed to coils, spark plugs, and injectors. All coils changed at one time, then later all spark plugs. Then engine came on about a month later. Mechanic changed #8 and #3 and #5 coil. Spark plugs changed. This happens more in the winter than in the summer. Recently just changed #3 coil and spark plug as codes pointed to this. Computer reset and worked for about a week and now same symptoms.
I was driving down road and out of nowhere the truck quit moving. The engine did not stall but the truck wouldnt go in gear. I had to have it towed home and had to block the wheels because it wanted to roll out of driveway. Could it be a shifting linkage? It wont go in gear and when try put in park it makes a little noise not real loud grinding noise but lil one and it wont go into any gear.
As I put the car in drive, it takes a while for the car to move. Like it's review up to 3500 rpm, then it would jerk, and shoots up to move. Then gears slips again on 2nd. When I reach to 3rd and I'm going up to 40 mpH highways no proboem. It's when I'm at a full stop, the car is hesitant to move. Torque convent had been fixed 6 months ago. Please, please, ford experts, I need your help.

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