Question about 1985 Ford F 250

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How do i remove the thermostat housing on my 1985 ford f250 6.9 litre diesel truck?

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: ford f250 2005 with 6.0 diesel

I have a 2005 Ford F250 4x4 supercrew, When I first start the engine the truck has no power and will not run good until it warms up which takes about 5 mins. How do i fix this

Posted on Jun 15, 2011

  • 68 Answers

SOURCE: 2004 Ford f250 7.3 Litre Powerstroke turbo Diesel overheating

hi themulks
dave here

if you have a rad cap open it and check your coolant level. if it is low fill the rad and leave cap off while you then put the recovery resorvoir at the proper cold level. Move your way along to the thermostat and look for a screw and nut at the top of the housing. If there is one then this is the highest point of the coolant in your vehicle and you will bleed it by opening this hole and running your engine until only coolant flows from the exposed hole. Do not remove the screw just turn it until the hole in the side is revealed. I basically almost remove the screw (till it kind of wobbles) and then turn it back in til it stable (like 1 turn). Be sure that the coolant is flowing without bubbles(air) and not just kinda trickling with short pauses.
If the housing for the thernostat is lower than the rad cap then you bleed it through the rad. Wait for the thernostat to open and the level to go down and then refill it and watch to see no more bubbles (air) escaping. Once the vehicle gets hot you may have to wait for the engine to cool(ie) turn it off for a while and redo it. Also if you are using the thermostat bleed hole be sure to put the rad cap back on before you start the bleed process and keep your eye on the coolant resorvoir adding coolant as needed so you dont **** more air into the engine.

Posted on Jul 20, 2008

Big Poppa Ma
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SOURCE: I need a wiring diagram

Battery YEL + (+) IGNITION SWITCH HARNESS
Ignition RED/LT.GRN (+) IGNITION SWITCH HARNESS

Starter01 RED/LT.BLU + (+) IGNITION SWITCH HARNESS
AllDoorTrigger BLK/LT.BLU (+) AT LIGHT SWITCH
TrunkTrigger N/A
HoodTrigger N/A
FactoryAlarmDisarm N/A

ParkingLights BRN (+) AT LIGHT SWITCH

Posted on Dec 08, 2008

  • 17 Answers

SOURCE: HOW TO REPLACE THERMOSTAT

It should be located in a housing on top of the engine.

  • You'll need a bucket.
  • This is also a good time to do a coolant flush or replacement
  1. Follow the hose from the top of your radiator to the engine. This is the thermostat housing.
  2. Remove this hose from the engine and collect the fluid in the bucket.
  3. Remove the (usually 2) bolts holding the housing to the engine.
  4. The small round object inside is the thermostat. It's usually loose but if you have severe corrosion, you may have to pry it out with a screwdriver.
  5. Replace the thermostat.
  6. Re-install the housing and hose.
  7. Top off your coolant with new fluid
  8. Dispose of old fluid properly (This stuff is poisonous!)

Posted on Dec 15, 2008

  • 56 Answers

SOURCE: ford F250 6.0 litre turbo diesel won't start.

check the fuel cut-off switch under the glove box.

Posted on Jul 21, 2009

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I have a 1985 ford f250 diesel. It ran out of fuel and now I cannot start it. How can I get it started after running out of fuel


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How to replace thermostat on ford f350 turbo diesel


The F-350 designation refers to a 1-ton Ford F-Series pickup truck. The thermostat in your diesel-powered Ford closes off the flow of coolant when the engine is cold, forcing the engine to heat up faster. When the coolant has reached a certain temperature, the thermostat opens up and the coolant flows as normal. A malfunctioning thermostat in your diesel may cause your engine to overheat if the thermostat gets stuck in the closed position. Installation of a new thermostat will cure the problem and get you back on the road

  • Open the hood. Allow the motor to cool off so that you will not be scalded by hot coolant. Locate the thermostat housing by tracing the upper radiator hose from the driver's side of the radiator to its termination at the thermostat housing.
  • 2 Remove the cap from the white plastic coolant bottle at the front of the engine bay. Place a drain pan under the radiator drain petcock on the lower side of the radiator on the driver's side of the truck. Remove the petcock by rotating it counterclockwise with a 19mm wrench. Replace the petcock and tighten it in a clockwise direction once the coolant has fully drained.
  • 3 Remove the clamps from both ends of the upper radiator hose with a pair of pliers. Pull the hose from the radiator and from the thermostat housing, using a twisting motion. Set the hose and clamps aside.
  • 4 Spray penetrating fluid on the three mounting bolts on the thermostat housing and let it soak in for a few minutes. Remove the three bolts with an 8mm wrench turned counterclockwise. Remove the thermostat housing from the water pump and set it and the bolts aside.
  • 5 Remove the thermostat housing from the water pump to reveal the thermostat. Carefully pry the thermostat up with a flat-blade



  • screwdriver if necessary. Clean the mating surfaces on the thermostat housing and at the water pump with a rag.
  • 6 Place a new thermostat into the water pump with the pointed end facing upward. Install a new O-ring gasket into the groove on the thermostat housing mating surface of the water pump. Position the thermostat housing back onto the water pump and tighten the three bolts with a torque wrench to 15 foot-lbs.
  • 7 Push the upper radiator hose back onto the radiator inlet and the thermostat housing until it is fully seated at both ends. Replace the hose clamps in their original position with a pair of pliers. Refill the coolant that you drained from the radiator back into the white plastic coolant tank and replace the cap. Start the engine and let it warm up. Check for leaks and retighten your connections if necessary



  • Dec 08, 2010 | 2004 Ford F350

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    Replacing the thermostate


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    1985 Ford Ranger Mitsubishi diesel is overheating. Water pump looks good. How do I check it and where is the thermostat located? thanks


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    In that time frame Ford was putting the Thermostats inside the Gooseneck where the main hose is. It was a pain because some of the aftermarket thermostats did not have tabs on them. The tabs were necessary to twist and lock into the Gooseneck housing.

    If you are only a recent owner of this truck you may want to investigate further about the thickness of the Radiator. The diesels could have larger Radiators than a gas Ranger, Thanks for using Fixya.

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    How to put a thermostat on a 1985 merecury cougar


    You'll need to remove the upper radiator hose from the thermostat housing. Unbolt the 2 bolts holding the thermostat to the intake manifold and remove the thermostat housing and thermostat. Clean both mating surfaces and install the new thermostat with a new gasket, reinstall the radiator hose, fill with anti-freeze and check for leaks.

    Apr 24, 2010 | 1985 Mercury Cougar

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    Follow the top radiator hose to the engine,the thermostat is behind the housing where the hose is connected to.

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    IS there a mechanical thermostat and where would it be?3.0 litre


    some vehicles have the thermostat inline from the bottom radiator hose . trace the hose and look for the housing

    Dec 29, 2008 | 2001 Ford Escape

    2 Answers

    HOW TO REPLACE THERMOSTAT


    It should be located in a housing on top of the engine.
    • You'll need a bucket.
    • This is also a good time to do a coolant flush or replacement
    1. Follow the hose from the top of your radiator to the engine. This is the thermostat housing.
    2. Remove this hose from the engine and collect the fluid in the bucket.
    3. Remove the (usually 2) bolts holding the housing to the engine.
    4. The small round object inside is the thermostat. It's usually loose but if you have severe corrosion, you may have to pry it out with a screwdriver.
    5. Replace the thermostat.
    6. Re-install the housing and hose.
    7. Top off your coolant with new fluid
    8. Dispose of old fluid properly (This stuff is poisonous!)

    Dec 15, 2008 | 1991 Ford F350

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