overheating f-250 w/plow on

Discussion in 'Trucks and Trailers' started by Lawnking, Mar 16, 2001.

  1. Lawnking

    Lawnking LawnSite Member
    Messages: 27

    One of my plow trucks is a '95 f-250 with a 351 in it. My problem is when the plow is on it the truck overheats when you accelerate to quickly. I have tried keeping the plow low to the ground and tilting it sideways to allow more air flow but this is not a solution to the problem. Is it a bad thermostate? Has any one else had this problem?
  2. GeoffDiamond

    GeoffDiamond LawnSite Bronze Member
    from Maine
    Messages: 1,651

    What are the air temps when it over heats, how fast are you going.

  3. Lawnking

    Lawnking LawnSite Member
    Messages: 27

    Air temps are below freezing. It dosent matter what the temp is even below zero. Speeds as high as 60
  4. 75

    75 LawnSite Senior Member
    Messages: 992

    One other consideration too, are you running with a winter front on your truck and if so, are the vents open/closed? The winter front on my work truck ('79 Chev C-30) will cause quite a rise in operating temperature if the day starts out cold, then gets milder.
  5. GeoffDiamond

    GeoffDiamond LawnSite Bronze Member
    from Maine
    Messages: 1,651

    We don't have any overheating problems with our trucks that are like yours. I think you have a cooling system problem. Check your colling system for leaks, and damage.

  6. Lawnking

    Lawnking LawnSite Member
    Messages: 27

    There is no reason to run a winter front on a gasoline powered truck.
  7. thelawnguy

    thelawnguy LawnSite Silver Member
    Messages: 2,411

    Be sure the fan clutch is operating correctly. If the temp climbs and you dont hear the fan start to roar then the clutch is probably toast (or the radiator is plugged).
  8. SLSNursery

    SLSNursery LawnSite Senior Member
    Messages: 442

    Like Bill mentioned, the fan clutch could be the culprit. We had a problem in a slightly older Ford. The fan clutch is the liquid filled cast part in the center of the fan blades. Sometimes when it lets go the fluid sprays out and its easy to diagnose. Other times, like after you put in a new motor and think everything is fine, it just lets go, and you ruin the block...
  9. plowking35

    plowking35 LawnSite Bronze Member
    from S.E. CT
    Messages: 1,687

    Before you get carries away, lower your traveling speeds. The next thing is do you have a snow deflector, rubber flap, across the top of the plow. If not get one. The plow will take the air and deflect it up over the hood area, cutting off air supply, the deflector keeps that air down below the plow, allowing clean air over the top. We have had several trucks that would heat up before installing the deflector, once installed they ran fine.
    You could have a 1000000000000 cfm fan, but with out air, it wont do any good.
  10. Mark Oomkes

    Mark Oomkes LawnSite Fanatic
    Messages: 15,552

    We just had a '94 3/4 ton Dodge 360 that we had the same problem with. Replaced the fan and took care of the problem.

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