Recent content by AZ SVT

  1. AZ SVT

    5.4 Detonation and fix

    Just to make sure everyone knows the time line here Oct 2016: hearing the nasty sounds of detonation, I start trouble shooting. 1) No check engine light, code scanner shows no codes 2) Understanding that a lean situation is unlikely with no code, check fuel pressure anyway, fuel pressure is...
  2. AZ SVT

    5.4 Detonation and fix

    I'm feeling a cunty sort of vib from you, Snowsled. Yah, defiantly ****-like. You should work on that.
  3. AZ SVT

    5.4 Detonation and fix

    Holy cow; read the can! Don't you worry too much about my truck, if the motor was going break, I'd have broken it 10 times by now. Just last week I hooked our 1000 pound tire drag to it and pulled it through a foot of snow for 10 miles just to keep my road open. And next time the wind...
  4. AZ SVT

    5.4 Detonation and fix

    Yah, well, you would be wrong. It's been over a year, and 14,000 miles of operating in some pretty tough conditions, and it's still running great. This truck MUST start and operate at 30, 40, 50 degrees below zero, because, as cheesy as it sounds, breaking down in the middle of nowhere is...
  5. AZ SVT

    5.4 Detonation and fix

    I used Sea Foam. I've used the stuff for years as a fuel stabilizer in my boats, ATVs, generators, and other 4-strokes.
  6. AZ SVT

    Front Dif mount loose

    I don't think it would directly cause a grinding noise, but it could cause other parts to fail that may. If the noise you are hearing is a fast ratcheting sound, like two fine-toothed gears coming together, during 2x4 to 4x4 High shift while the truck is moving, it more likely a worn IWE on one...
  7. AZ SVT

    5.4 Detonation and fix

    I did a search, I didn't find anything, so if this is old news, you can't say I didn't try, The issue was mild to moderate detonation (pre-ignition/knock/ping) at all speeds while accelerating (even a little bit). Fuel mileage remained nominal, spark plugs look OK, and no codes. Seriously...
  8. AZ SVT

    Front Dif mount loose

    So many causes of "the clunk!" They are really the CLUNKS :biggrin: and they ain't normal.
  9. AZ SVT

    Front Dif mount loose

    Last night I had the truck (2010, 5.4, 146k miles) up on the lift for an oil change. As I always do, I start inspecting and shaking stuff to see if it moves and found a loose front dif mount. I found it by grabbing the front drive shaft trying to move it up and down. It moved up and down....a...
  10. AZ SVT

    Transmission down shifting (harshly) during normal excelleration

    OK here's an update: My dealer put a new trans in and the shifting issue went away, however, now I have a new problem.... When we finally got the truck back, I was overseas, and my wife said "the transmission sometimes adjusts after I stop and a stop sign." A couple months later I got home...
  11. AZ SVT

    Transmission down shifting (harshly) during normal excelleration

    Well, I'm not getting a new truck, just a new transmission. Guess we'll never know what was broke.....
  12. AZ SVT

    Transmission down shifting (harshly) during normal excelleration

    Well, that's not good to hear, but good information. I had it towed to Fairbanks (100 miles) and it's at the Ford dealer now. If they 'fix' it and happens again I might just drive it up there next time, let it rip the trans/transfer case/axle out of itself so they can replace the whole drive...
  13. AZ SVT

    Transmission down shifting (harshly) during normal excelleration

    It's all stock. Tried the battery disconnect trick, no joy
  14. AZ SVT

    Transmission down shifting (harshly) during normal excelleration

    Here is what I'm seeing: during normal diving with trans in drive (D), a harsh down shift @ just over 20MPH. Feels like a 3-1 shift, then immediate up shift to 2 or 3 and then the cycle starts a again (because I automatically take my foot off the gas) . It's hard enough to make you think you...
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