Recent content by john mathis

  1. john mathis

    High Idle

    Do a search for a vacuum leak.
  2. john mathis

    Lets see those SuperDuty Trucks!! (OFFICIAL PICTURE THREAD)

    2002 7.3 172k miles. salt free, rust free, garage kept.
  3. john mathis

    Towing Capacity Question

    Those numbers are all about safety. Safely that vehicle can handle the posted weights. Can the truck pull/ haul more, yes! Can it stop easily if overloaded, probably not! That soccer mom with 4 kids in the SUV ahead of you in a panic braking situation is what you have to think about. Safety...
  4. john mathis

    Red 90 diesel?

    Absolutely! Red dye just indicates it's not taxed! In illinois it's a $1,000.00 ticket first offense. DOT was dipping tanks at the local sale barn and got a friend, use with caution.
  5. john mathis

    Front end wabble!

  6. john mathis

    Best winter anti gel additive

    Almost all the fuel you get during the winter has been treated with anti gel however I still add PowerService fuel additive to my truck. A very common product found at farm stores, parts stores, even walmart.
  7. john mathis

    Switching into 4X4

    My truck has 2H lit most of the time as 4wd isn't used very often. 2H to 4h can be done on the fly but isn't engaged until the light is lit. This takes a couple seconds. Going into 4L or out of 4L requires the vehicle to be stopped with foot on the brake in neutral. . The front hubs in auto are...
  8. john mathis

    Need thoughts on dealer pricing on brakes and bearings

    With so many YouTube videos and online forums that cover such repairs I would consider doing it yourself. I've replaced all calipers on my 02, never even thought about going to a stealer dealer. The bearing job should be no issue if you have tools and a place to do it. Time is money if you...
  9. john mathis

    2002 F350 7.3 auto tranny issues

    My 02 done this same thing a couple times. A transmission shop told me the front pump seal and bushings get wore and can cause this. They also said there's more pressure created when in reverse ( could be true i guess) I was on the pedal pretty hard backing uphill when mine belched fluid. I...
  10. john mathis

    Windsheild Wiper ON = Engine Shutdown

    Just a thought.... if you have tilt steering there could be a wire or combination of wires getting pinched causing your issue. Fire it up and move the steering wheel up and down while turning on and off the wipers. At least that's where I'd start. Good luck and let us know what you find.
  11. john mathis

    Truck Parts & Tires

    4wheelparts.com has good sales on occasion
  12. john mathis

    A different kind of steering issue

    Follow the pressure line from the pump. The line should go to the hydro booster then to the power steering gear box. Your issue may be inside the hydro booster. Several videos on YouTube show how to purge the air from the system. Trapped air causes issues like you describe but it could be a...
  13. john mathis

    A different kind of steering issue

    Might have air trapped in the hydro booster or lines causing this.
  14. john mathis

    Question Help needed please.

    My 2002 does something similar on startup, especially on cold winter illinois days. 18° yesterday morning and I've learned to just let everything warm up well before driving. Cold engine results in some unburned fuel which is causing the excess exhaust color. It's the nature of the beast to...
  15. john mathis

    Alternator Upgrade

    I changed the factory alternator at 165k miles, it was overcharging. You might check on the alternator that they use on ambulance or firetruck applications if you want a high output one.
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