Recent content by 04ebexpy

  1. 0

    2004 expedition 4.6 EB 2wd p0301 and p0420car

    I meant gas mileage though I appreciate the taxi info as well.
  2. 0

    2004 expedition 4.6 EB 2wd p0301 and p0420car

    Thanks for the reply I appreciate it seems I have unrealistic hopes for mileage.
  3. 0

    2004 expedition 4.6 EB 2wd p0301 and p0420car

    Thanks for the help guys I appreciate it ill have to tackle this. When I have more time and money. So I assume my 13 mpg is standard then? What is the cheapest route to get a cat? And what are the most common oil leaks on the 4.6?
  4. 0

    2004 expedition 4.6 EB 2wd p0301 and p0420car

    Thanks, I may have an extra coil laying around I may try or I may just switch coils and see if the misfire follows. Yea the cats aren't cheap. My question is will it cause long term harm not to replace it as well is it what's causing my low gas mileage.
  5. 0

    2004 expedition 4.6 EB 2wd p0301 and p0420car

    my expedition is pulling both of these codes I have already been told on the forum the 420 code is likely the cat. I’m just wondering if the cat can affect my fuel mileage or if I have unrealistic expectations. I am showing about 13.6 mpg via the dash for a mix of highway and city. Also, I...
  6. 0

    10 mpg

    I don’t have a temp gauge but I do have an obd reader and the torque app it registers fuel trims I just have to figure out how to read them
  7. 0

    10 mpg

    That’s an interesting thought I will have to look into that when I have time
  8. 0

    10 mpg

    Yea it’s a two wheel drive and ok what is the best method to have my trims checked? All the normal simple stuff I’m fairly certain I’ve covered so it’s got me more than a bit confused.
  9. 0

    10 mpg

    I just did all the plugs properly gapped with all new coils and air filter and an induction service 1k miles ago
  10. 0

    10 mpg

    Wife gets similar gas mileage so while it may be driving I’m kinda doubting it. I’ll have to look into the fuel filter I don’t remember. I got an o2 code not to long ago for the after cat o2 and my wife’s dad did run it for a while with a misfire so I maybe I have a clogged cat. Any sure fire...
  11. 0

    10 mpg

    i have an 04 with the 4.6 203k recent oil change new plugs and coils properly gapped no codes new air filter. It has been seafoamed like an induction treatment and I cut the muffler out because of a broken loose baffle and my gas mileage has improved since to between 10-11mpg. No codes Any one...
  12. 0

    Rattle

    Cut out the muffler and either it’s fixed or it’s so loud I can’t hear it unfortunately the dang hangers are in the way so I can’t put my new muffler on so the solution is in the planning stage while I run around straight piped. I think the solution may be similar to the walker 41726 I just...
  13. 0

    Rattle

    Put some cheap tires on the expedition and had the shop take a look see for my rattle they agreed with me that something is broken loose in the muffler so exhaust mods are imminent nothing special just a turbo muffler dumping under the body. New projects found though as I thought my suspension...
  14. 0

    Rattle

    I read it could be one of my cats maybe? No sulfur smell but did get a p0420 code the other day out of nowhere. Hasn't come back since I cleared it though. Any other signs maybe as far as gas mileage I get 12.5 calculated on the dash if I really try. Last question if it was a cat heatshield...
  15. 0

    Rattle

    Bought a turbo muffler for cheap online I'm just going to cut the exhaust prior to the muffler and add that to elimate the muffler as my issue. Then I'd be stumped. Hopefully I get better mileage at that point because 10.5-11.5 kinda sucks.
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