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    Coolant leak

    Mine (2010 5.4) had a leak I could smell, but not find. It was crossover pipe so it would pool on top of block and evap off, or leak if enough angle. Think the 3.5 has same type of crossover.
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    Thump when stopping and sometimes when taking off

    That's where I would start. Have had that with a transmission mount that was bad. Also check bushings in suspension. Son's F150 (yes completely different suspension) had a bad leaf spring bushing and it felt just like that. May be a control arm bushing on ours.
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    Unknown leaks and smell

    I had that and didn't see a leak. It was leaking at the crossover pipe and going on top of the motor. The coolant T to the heater had already been replaced several years before.
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    Cat back upgrade?

    I bought my 2010 with one already installed. I can't remember if it's magnaflow or flowmaster. It sounds great around town, but I hate it on the highway. 1800 - 2100 rpm has an unrelenting drone and bugs me... I have 200000 on the truck, so probably not worth changing it out, just turn up the...
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    2010 Expedition Rear AC Line Leak

    You need a new mechanic... My 2010 had the rear AC line go out where it touched the frame and rubbed a hole in it. Had the line replaced and there was no body removal. It can all be done under and inside the back panel.
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    Oil

    I use 5W30 full synthetic from Costco. Usually stock up when it's on sale.
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    Do I need a new PCM?

    My other son's F150 had a failing alternator that would test fine at the store. Seemed to work for 5 min after startup, then go to 0. It is worth a shot, but I don't trust the testers. Took it off 3x that evening and could do it in 10 min... If you think it might be the alternator, start with...
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    Do I need a new PCM?

    My weird issue on my son's Escape was an alternator issue. Had a bad one, replaced with off brand and still had an issue. That's why I leaned to PCM. Mine ran though and caused voltage to spike to 18V and go crazy. You could charge the battery and unplug the alternator since it is accessible on...
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    Do I need a new PCM?

    I don't know what the issue is, but if you think it is the PCM, please in the name of sanity, do not send to Module Experts in FL. They say they test and repair PCMs, but will immediately tell you it is bad and you need a new one for a considerable amount of money. You are screwed because you...
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    2017 expedition still not taking gas

    Had a similar issue in my son's old Ranger. It was the fill tube that had broken down internally. It was a lot easier to change on that since you could unbolt and lift the bed. Guess you would have to drop the tank on this thing... If you do that, might want to consider new inside tank fuel pump...
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    Taillights stopped working

    Do they work if turned to ON instead of AUTO? Could get you around the issue till they decide to help you out. If they still don't work, maybe a fuse?
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    Bulletproof???

    I started doing the holding the pedal to the floor and hitting starter for the last week or so. Usually do it 2x and after a sec on second time, see oil pressure dummy gauge show pressure, let off gas and it fires up. Today, had a "check gas cap" message on my capless system with pending evap...
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    Suggested Engine Replacements Sources (2012 2WD Limited)

    My mechanic also has had bad luck with Jaspers. Have had to do several engines 2x. Had helicoils in the heads, and other issues. I have these 2 sites bookmarked for when the fateful day comes... https://www.promarengine.com/engine-details.php?pn=FO5.4-12...
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    Total bummer = '10 EL Limited 4x4 is total'd

    If you plan on keeping it till it drops dead (what I do), then so what if it has a salvage title? If it is straight, drives fine, no drivetrain issues, etc. then having it straightened isn't a big deal. If you trade in and want value out of it, you may have an issue, but you already lost value...
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    Total bummer = '10 EL Limited 4x4 is total'd

    If no airbags, I'd get it repaired. See what the settlement - salvage value is, but wouldn't want to be buying anything in this market.
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    Intermittent loss of front blower motor

    I had an older (1998) Dodge van that used to go through those type connectors. It would end up melting right at the resistor. After the second time, I got both sides of a 4 pin trailer connector with pigtales. Soldered one side to new resistor and other to exiting wire harness. Never had another...
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    Alternator Question

    That's a start, but I have had 2 now (one on an F150 and one on an Escape) that were bad, but tested just fine at Auto Zone. They both seemed to be fine for 10 min or so after connecting them before they would fail. Wasn't a big deal on the F150 since I could have it out in 10 min, but the...
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    Power Steering Leak

    May want to change other crimp also. Mine did that and about 6 months later the other side had the same issue.
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    2007 EL no heat or AC

    An AC leak would have nothing to do with not getting heat, it's not a heat pump like a home system. Heat is from engine so maybe diverter stuck in the cool position? That would give you no heat and if there is an AC leak, would give you minimal cooling.
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    Running super COLD all the time

    Any chance you put in one of those 'never fail closed' thermostats? I made that mistake on a dodge full size van where it had to be changed by feel alone. It stuck open almost immediately and I got to do the job again before the next winter. If you are replacing the intake anyway, replace it...
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    Clicking sound

    I know my 2010 has very loud injectors. Took me a long time to get used to it and still a little unnerving at times. Edit - Nevermind, not varies with engine speed, but vehicle speed... So wheel bearing, something dragging in brake system, bolt in tire?
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    P0307 #7 misfire

    When I replaced plugs etc. I started getting an issue. Went through the coils, etc also. Turned out to be a new plug that was bad. Didn't fire all the time for some reason, but replacing that one again fixed the rough running.
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    2015 headlight housing options

    I'm using the same ones linked and don't have any issues. It does put brighter light down the road with the same cutoff in the reflector housing. Never been flashed by oncoming traffic. Been in for a year and so far no issues at all.
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    Cat Back Exhaust Options for a 09 (5.4l 3v)

    I have a catback on mine (2010 5.4) the previous owner had installed. Not sure of the manufacturer. It sounds really good around town, but on a trip, really wish it wasn't on. 1800 - 2200 RPM is too loud on the highway especially for anyone in back. Sure sounds good around town and OK by...
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    3rd Gen Expedition meets Godzilla

    I am curious how all the electronic things work when you do this. I'm guessing you need a new ECU, but doesn't that also control everything in the vehicle? How does it know what to do with transmission shift points and even what transmission is in there. PATS, instrument cluster, etc all have to...

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