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Good call! Hope everything stays put.

when a resistor isn't working properly, the blower motor defaults to 4/high speed, basically what you saw with it connected directly to battery. but you said when reconnected, the motor responds to tapping? i don't see why it would do that if the motor is not faulty. are both the blower and resistor new or did you purchase them used? ford/motorcraft brand or something else? just to satisfy my curiousity test the blower motor switch for continuity if you have not already. 2010 Edge Blower Motor Inoperative or Does Not Work Correctly EMTC and DATC.pdf

Sounds like the timing system is busted. Only cosmetic damage from a 50 mph hit? Pics?

are you sure the drain tube is not blocked? blockage can cause water buildup behind the dash, typically heard as a sloshing when making left turns. the water gets in the blower and eventually kills it. did you replace the fuse as well? did you replace the cabin air filter/screen?

the oil pump is timing chain driven, just like the water pump. if the compressor is drawing too much power, it could cause rpms to stumble enough to trigger the oil pressure warning light.

too early for wheel bearings but perfect conditions for them to be heard. brakes maybe? would pull the pipes off the turbos and check, just in case compressor and/or bearings are involved.

if your Edge is a 2007-2008, i would plan on doing the rest soon. there is a known issue with worn plugs causing the coils to fry in turn frying the coil drivers in the pcm. it becomes a vicious cycle if you do not address all the components at the same time.

Ford is way ahead on that one https://money.cnn.com/2017/04/07/technology/ford-crib-max/index.html

Kind of lives up to the Fix Or Repair Daily motto lol but in a good way.

sometimes you have to change the sensor a few times to get one that is cozy with the engine ? in this case tho, you may need a calibration update of the PCM and/or IC (instrument cluster), sounds like a false alarm. To confirm, check oil pressure at idle. If the oil pump was damaged, that may be the actual root cause. Have yet to see an oil pump damaged due to a WP failure that has not reached the chocolate milkshake point.

Most definitely an adjustment will be needed. A bright spot indeed

see this video

Assuming the place of your choosing can turn em right lol. Check runout before and after.

The last kit I heard about for gen 1 was at a SEMA build, estimated to cost 8,000$ at the time. No one that I know has forced induction on a gen 1 engine ... yet.

What MY? Power liftgate I assume since it reverses and not slams lol. You can try re-initialization procedures. Also verify the vehicle battery is good.

Hope there is some type of Loctite on it now

I would swap the coil with #5 and see if the misfire moves. Even if it does not, at least a suspect coil is now easily accessible. Have you checked codes stored in the PCM? misfires can be due to plugs, coils, pcm or fuel injectors (usually). To replace any of the injectors, the intake has to come off to get to the fuel rail.

Did you go oem?

Ugh that sucks. Motorcraft Specialty Green or Peak universal (now Peak 10x) are best to fill the engine with once repairs are complete. Clean up the area with CFC free brake cleaner if you want and monitor so you can see if this is an active situation.

Autozone Duralast Gold rotors and Max pads should do you good, unless your driving is the extreme variety that XTra routinely punishes his Edge with LOL.

You can run up to about E18 on ecoboost engines without the need for a tune. After that, tune for best benefit - cooling, detonation resistance, and timing advance.

5/60k is a good rule of thumb for any maintenance items on the powertrain really. Fluids or plugs or pcv valve or ... If your Edge experiences "normal" driving conditions as defined by Ford, you can stretch that 60K to 100K for most things. EXCEPT the AWD fluids, particularly PTU. Note that Ford's maintenance intervals for FIRST change are long, but SUBSEQUENT intervals fall back to the 5/60 rule. So why not do it from the start? Really, the powertrain, when given regular, basic maintenance should hold up rather well.

Use Valvoline MultiVehicle Full Synthetic ATF for the flush, and any future trans fluid changes. It is suitable for both V and LV, so one less headache.

Awesome, good detective work!

Odd. Usually we get complaints of rattles. Has your Edge ever been in an accident or in the shop for water leak issues?