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  1. whtbronco

    Blend door actuator ? How many ?

    Temperature Blend Door Actuators The DATC system utilizes two temperature blend door actuators to control two separate temperature blend doors that independently vary the LH and RH side temperature settings, as desired. The temperature blend door actuators: - are located on the plenum...
  2. whtbronco

    Odd shake that went away

    Do you have an aftermarket switch in the fuel system you're referring to? I am aware of the inertia fuel shutoff switch that's in a little cubby in the left rear trim panel. A lot of vehicles have these now days, if not all, though some are easier to reach than others. It's supposed to shut...
  3. whtbronco

    Odd shake that went away

    Sounds like a misfire to me. For an intermittent misfire my experience on these engines leads me to first suspect a coolant leak dripping into the coil/spark plug recess. Besides it's easy to check and free. For instance the heater valve is a fair common thing to leak. Mine only leaked...
  4. whtbronco

    2004 5.4 misfire after intake swap.

    If you find connectors broken or faulty as Dustin Gebhardt suggested you can replace the connector without cutting and soldering. I did the cut, solder and heat shrink a couple times, then found tools that allow you to just pop the wires out of the connector and replace it. So much easier and...
  5. whtbronco

    Expy 2003 - No heat - Just replaced thermostat

    There's multiple actuators up front all on the passenger side of the dash. Below is some info for the DATC/EATC system that might help. BTW, did you check for hot coolant hoses on both sides of the heater valve? The heater valve should be open without vacuum, so coolant "should" flow through...
  6. whtbronco

    Idler pulleys, just some bearing observations

    My 2004 Expedition with 5.4L developed a light engine speed vibration about a week ago. It's primarily noticeable in gear. Anyway, today I decided to check the pulleys and accessories. I didn't actually finish checking them, I checked the alternator and the 3 idler pulleys. Having found that...
  7. whtbronco

    Off Road Front Bumper 2003-2006 Navigator

    I can't offer much help as I have not studied the Navigator much since I purchased my Expedition and was comparing the Exp and Navi. The fenders, headlights and grille are not the same. The frames are the same. I would bolt the new bumper on, welding it would likely be regretted I suspect. I...
  8. whtbronco

    2004 5.4 misfire after intake swap.

    All I can think of is either the intake isn't sealing correctly or, this is a long shot, is the lower o-ring on the #1 injector good? My injector o-rings were pretty hard when I replaced them earlier this year.
  9. whtbronco

    No heat or cold

    Sounds to me like the temperature blend door has failed.
  10. whtbronco

    05 expo issue

    I've got no help, but it seems like you're on a good path for troubleshooting and I'm interested in the outcome. The new format keeps confusing me. I realized after I replied to this it might be really old. Turns out it is old.
  11. whtbronco

    Can you clean or service a built-in PCV valve on 2005 Expedition?

    Well on the 5.4L engine it's pretty easy to swap. It just pushes into the valve cover, but removing the spring clip for the coolant hoses can be slightly tricky. You might consider changing the mounting grommet as well, which I had to get from the local dealer. On the 4.6L I've never done it...
  12. whtbronco

    Another Timing Job Question -2003 5.4L 2V

    Nah, I used the trash below from Orion Motor Tools. At least the crank alignment tool and the valve spring compressor were trash. The cam holding fixtures, but they ended up working fine. I won't buy these cheap tools again. I know better, but I didn't listen to myself, again. In this case...
  13. whtbronco

    Another Timing Job Question -2003 5.4L 2V

    If the coolant hoses are original as mine were this is a great time to replace them. Honestly the only way to know about the main and rod bearings is to judge the wear you see on the heads and timing chain parts. From that decide if you want to pull a cap from the crank to check. If I was...
  14. whtbronco

    Timing set and a startup anomaly question

    I used a 3D printed front crankshaft seal installer, which was basically just a really nice plastic cup. It did not support using a bolt or have any provision for setting the depth. I think a large socket or section of PVC pipe that is cut square would work just as well. Pay attention to...
  15. whtbronco

    Expy 2003 - No heat - Just replaced thermostat

    You should not need to cut any hoses to remove the valve for inspection or replacement. It's just a butterfly valve so you pull the hose off 1 side and move it back and forth to figure out if the valve works. You can also unhook the vacuum hose, plug the hose, from the valve so it remains...
  16. whtbronco

    heater not working 2004 expedition

    Sure it absolutely could be the heater valve and it's easy to check. It could be 1 of multiple issues. Do you have air flow from the vents and the air is just not warmed? Checking the heater valve. Without vacuum the valve is designed to default to the open position allowing warm/hot coolant...
  17. whtbronco

    Advice Needed: Upgrading Stock Suspension (2006 XLT)

    Cloth vs leather and Bilstein vs Rancho adjustable. Both are very much a personal opinion/decision. I have always preferred cloth seats, but with my age and failing body leather makes it easier to get in and out. I also hate to say that I never had cloth last 20yrs, but my 2004 Expedition...
  18. whtbronco

    Clunking sound after replacing front struts on 2003 Eddie Bauer

    If the struts, control arms and ball joints are tight there's a good chance it's the sway bar links. It took me a couple months to figure that out. There seemed to be no play when testing them. When I took them loose it was blatantly obvious they were shot.
  19. whtbronco

    Advice Needed: Upgrading Stock Suspension (2006 XLT)

    You either have air springs or steel coil springs from the factory. Being an XLT it's likely coil springs. If you had air springs you'd also hear a compressor running for 2-5 minutes at every single start, that drove me nuts and was one factor i my choice to remove the air suspension. My vote...
  20. whtbronco

    No heat or cold

    Following the blend door actuator replacement have you verified it's closing when commanded to at the DATC? Does the A/C compressor engage when A/C is selected? I realize you may not feel cool air inside, but if the compressor doesn't engage you may have a an issue with the DATC module...
  21. whtbronco

    Po453 engine code

    So I don't know if the roll over valve is replaceable. I never checked when I had mine out. It can be replaced on some Chevy tanks that I know. I also doubt that's the issue. I mean if you remove valve the fuel cap is seal is gonna hold the pressure anyway and it likely is now. I don't...
  22. whtbronco

    Strange cluster behavior

    I would say yes you have a computer issue. I believe you're gonna need a scanner that can at least read the UBP bus and SCP bus to troubleshoot this most likely. Scanners that can do this cost several hundred dollars and up. Mine was $1100 I think, bought 6yrs ago, but it has paid for itself...
  23. whtbronco

    Fuel Pump electrical Issues

    You can get the service manual for the diagrams from AllData or here is another option: https://charm.li/Ford/2003/
  24. whtbronco

    Fuel Pump electrical Issues

    Pretty common failure around here. Check the fuse and verify the relay in installed correctly. It can be installed backwards. Well it's unlikely, but possible the replacement relay is faulty. Could have burned through the run on the board as well. I'm not sure off hand what else to check...
  25. whtbronco

    Possible to use aftermarket carplay headunit designed for 2007-2014 into 2005?

    Steering wheel controls seem to require a bit of fiddling on every vehicle I have tried.

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