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  1. W

    Cooling Fan cycle

    99 F250 7.3 PSD, 4r100 trans pulling 4900 lb travel trailer. Have overdrive locked out, running 2800 rpm at 70 mph on interstate. periodically sounds like a fan winding up and at that rpm, gets pretty loud, but bothersome part is that it kicks in and out about every second or so. Constant in and...
  2. W

    Unknown sound while towing

    Thanks for the info. Makes a lot of sense and relieves some stress.
  3. W

    Unknown sound while towing

    Just pulled my 4900 lb camper with my 99 f250 SD, 7.3 PSD, 4r100 transmission. Had the transmission locked out of overdrive. About 20 miles into my trip, a sound started coming from the engine compartment that I can only describe as a fan coming on and off constantly. Turning the A/C off would...
  4. W

    4R100 shifting

    Just got my 1st powerstroke. 99 F250 SD, 7.3, 4R100, 119,000 miles. I understand that the 4R100 has 4 foward gears plus overdrive. 90% of the time mine shifts from 2nd to 4th then overdrive. 5% it will shift from 2nd into 3rd for a fraction of a second and then immediately into 4th. 5% it will...
  5. W

    86 F250 Rear Brakes

    Thanks for info on brakes/load sensor Appreciate the info on the brakes/load sensor. It it helps to know what something is suspose to do to try and figure out what its not doing. My suspension has not been altered from stock, and shoes were adjusted after replacement. Haven't replaced the...
  6. W

    86 F250 Rear Brakes

    The rear brake line junction box mounted on the rear end housing of my 86 f250 has a lever attached to it. What is this for, and if it fails could it restrict the fluid flow to the rear brakes. I have replaced everything in my brake system and can still not get good rear brakes. Thanks for any...
  7. W

    Brake/Vacuum problem

    Just started going through my first IDI. It's a 86 f250, 6.9, with C6 trans. Started with the brakes which were terrible. Replaced shoes, pads, wheel cylinders, calipers, and master cylinder. Brakes bled up good with a firm pedal at the top. The problem starts when you crank the truck. Pedal...
  8. W

    Well... they screwed my starter!

    Put a denso on my 6.9 from the above mention company. Haven't had any problems with it. To me, it was easier to install than the mitsu and turned my engine faster. My mitsu may have been on its way out, but the denso really helped the starting.
  9. W

    C6 Trouble (posting for a friend)

    Hey chris - when I first got my 86 f250, transmission shifted exactly the same - seemed like it changed to second at about 3 miles per hour - changed modulator which didn't help. Found that the vacum hoses at the VRV at the pump were crossed. Switched them and the trans shifted perfect.
  10. W

    'Ol Faithful is sick (assesment of my 7.3, with video!!)

    I'm a newby with diesels, but I've noticed tht with my 86 6.9 that my blow-by out the filler neck is a lot greater when the air filter is off. When the air filter is on, the motor hardly has any blow-by.
  11. W

    Electric fuel pump

    elec fuel pump Thanks for the info. I will definitely remove the lift pump and block it off. Can you recommend the right fuel pressure from the electric pump. I've been told that if you run too much fuel pressure to the IP, that it will force fuel past the seals in the pump. Thanks
  12. W

    Electric fuel pump

    Wanting to install electric fuel pump on 86 6.9. What is the best fuel pressure for this IP and should I just bypass the mechanical lift pump and leave it in place, or is there a plate available to cover the hole if I remove the lift pump.
  13. W

    Glow plug controller

    I read that the glow plugs on my 86 F250 should come on anytime the engine temp is below 165 degrees, with the length of time on determined by temp. Mine will cycle great when the engine is cold and engine starts great. After the engine heats up, they will never cycle again until the engine is...
  14. W

    Antifreeze Help

    Like a newbie, went to the newbie section last instead of first. Had a good article on cavitation and a list of products that will prevent it. For some reason, I've got a bad habit of doing things backwards. Still willing to listen to any advice.
  15. W

    Antifreeze Help

    Trying to get a recently acquired 86 f250 6.9 ready to pull a camper. Sent radiator out to be serviced and plan to drain the block if I can find the drains and get them out. Need some advice on reasonably priced , easy to find antifreeze that will prevent cavitation. Checked on 7 gallons from...
  16. W

    Negative Battery Cable Size

    Negative Cables Thanks for the info. Will start tracking some down tomorrow.
  17. W

    Negative Battery Cable Size

    Got a 86 f250, 6.9 project truck. Replacing the starter and all battery cables. Ford said that the negative battery cables are no longer available from Ford. All of the parts houses that I've checked with only list a 4 gauge negative cable. I know that the ones on there are larger, maybe 1 or...
  18. W

    Replacement Starter

    Saw a ad for a Nippondenso Starter. Ad says that its easier to install, last longer and turns a 6.9 faster. Anyone have experience or opinions. Thanks

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