Overheating, stumped

Discussion in 'Engine & Performance' started by Nitewolf, Jul 2, 2011.

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  1. Jul 2, 2011 at 6:19 PM #31
    Nitewolf

    Nitewolf The Big Bad Wolf

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    i spun my fan and it does a full 360 both ways
     
  2. Jul 2, 2011 at 6:20 PM #32
    Nitewolf

    Nitewolf The Big Bad Wolf

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    It will overheat all the time.. at idle and moving
     
  3. Jul 2, 2011 at 6:36 PM #33
    supercrewzn

    supercrewzn Full Access Member

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    its not the fan clutch.. I suspect a water pump or collasping radiator hose
    Check to see if the upper hose is hot and lower is cold.
     
  4. Jul 2, 2011 at 6:46 PM #34
    Nitewolf

    Nitewolf The Big Bad Wolf

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    I only see a upper one..pics?
     
  5. Jul 2, 2011 at 6:47 PM #35
    supercrewzn

    supercrewzn Full Access Member

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    bottom left below the resivor. There is a tee in the hose
     
  6. Jul 2, 2011 at 6:52 PM #36
    Nitewolf

    Nitewolf The Big Bad Wolf

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    ah..ill check later
     
  7. Jul 3, 2011 at 11:32 AM #37
    Nitewolf

    Nitewolf The Big Bad Wolf

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    All hoses are hot thomas

    Sent from my DROID2 using Tapatalk
     
  8. Jul 3, 2011 at 12:06 PM #38
    Nitewolf

    Nitewolf The Big Bad Wolf

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    [​IMG]

    This is at idle

    Sent from my DROID2 using Tapatalk
     
  9. Jul 3, 2011 at 12:09 PM #39
    Big'un

    Big'un BillyBadAss

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    its the fan clutch im tellin u , my rab done it sittin still and movin durin the summer time ...... if the fan spins a 360 then yes the clutch is bad ..... wiggle the fan and see if it moves kinda like a bearing is wore out
     
  10. Jul 3, 2011 at 12:29 PM #40
    Nitewolf

    Nitewolf The Big Bad Wolf

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    CHECKING THE FAN CLUTCH

    A good clutch should offer a certain amount of resistance when spun by hand (engine off, of course!). But if the fan spins with little resistance (more than 1 to 1-1/2 turns), the fan clutch is slipping too much and needs to be replaced.

    If the fan binds, does not turn or offers a lot of resistance, it has seized and also needs to be replaced.

    Fan speed can also be checked with an optical tachometer, by marking one of the fan blades with chalk and using a timing light to observe speed changes, and/or listening for changes in fan noise as engine speed changes.

    You should also try to wiggle the fan blades by hand. If there is any wobble in the fan, there is a bad bearing in the fan clutch, or a worn bearing on the water pump shaft. A bad water pump bearing will usually cause the water pump to leak and/or make noise, but not always. Remove the fan clutch and see if the play is in the water pump shaft. If it feels tight (no play or wobble), replace the fan clutch.
     
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