Question about 1999 Ford Ranger SuperCab

3 Answers

I have a '99 Ford Ranger 2,5L four Cylinder. New thermostat has been installed but I still have problems with engine running with the temp gauge near the bottom.. The fan can be turned by hand when engine is off but it doesn't spin freely. When the engine is running the fan seems to turn all the time. Should the fan be stationary when the engine is running and the fan clutch is not engaged?

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  • jtmoore41 Jun 01, 2010

    My question is, when the engine is off should you not only be able to move the engine fan by hand but be able to spin it freely if the fan clutch is working correctly. The fan does turn by hand but does not feel free enough to not turn when the engine is running and it does appear to be turning all the time when the engine is running. I don't want to buy a new clutch and install it only to discover that my low engine temperature problem still exists. I'm just assuming that the fan is not supposed to turn at all when the engine is running and the fan clutch is disengaged.

  • jtmoore41 Jun 01, 2010

    Thanks very much.

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  • Expert
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Hi! The fan should spin freely even when spinned by hand. If the fan is kinda stuck or spins then stops then the fan motor is faulty. This maybe corroded or the fan bearing is worn. This will surely require replacement to perform well. Hope this helps and have a good one!

Posted on Jun 01, 2010

  • jtmoore41 Jun 01, 2010

    The fan is not electric but uses a thermal clutch. I assume your answer would still apply.

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The only reason a car will run cold with a known good thermostat is because you have a defective temp sensor or gauge. You will need to use an infrared temp gun to actually test the temp near the sensor. If its normal replace the sensor. Also you can use a scanner to see what the computer is seeing. If the temp is normal then the gauge is bad.

Posted on Jun 01, 2010

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Hi,
What you have is a fan clutch from what you discribe. Some came with electrical fans that were off or on.
In your case with the fan attched to the water pump housing and attached to the engine it self you need a new CLUTCH FAN.
You should have no major problems replacing it with the instructions that come with the new part. I suggest you get the life time or limited life time guaranteed fan.

Posted on Jun 01, 2010

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  • Gary Rice
    Gary Rice Jun 01, 2010

    There is a test for these - home grown -
    Roll up a new paper or magazine - put it close to the fan - start the engine - if the wrapped item can stop the fan at running temperature then you need to replace it.


  • Gary Rice
    Gary Rice Jun 02, 2010

    Ok - Now I get your question.
    First off - yes the fan should turn a little when the engine is off yet have some drag.
    Second the Fan should always turn a little when the engine is running from centrifugal force.
    The test I gave you before is to be sure the 'clutch' is still good enough to cause the fan to turn at the SAME SPEED as the engine when running temperature is reached.
    To put the rolled up magazine into the fan blades will stop them from turning if the fan clutch ius bad. If the fan clutch is good it can pull the magazine from your hand but should not harm you if you do it with the understanding that if the clutch is good it will try to knock the magazine from your hand and if it is bad it will stop the fan from turning.
    I hope this clears things up for you so you don't totally reject my answer and vote me up as well.
    Thanks for choosing Fix Ya.


  • Gary Rice
    Gary Rice Jun 17, 2010

    No- My answer applies - not his - please - be sure to check the fans - he assumed you have electrical fans.
    Thanks
    Riceski


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