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    1. 03-17-2010 #1
      jamesL0822
      jamesL0822 is offline New to Pro-Touring
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      Electric Fan Thermostat leaking

      I installed my twin SPAL fans today and the instructions say that you should not put any teflon tape on the sensor but I can't get it to stop leaking. It is mounted in the head. Should I try the teflon tape anyway? Anyone ever had this problem? so close to being back on the road.

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    3. 03-18-2010 #2
      jamesL0822
      jamesL0822 is offline New to Pro-Touring
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      Bump Soon to be turning wrenches and I have this one wire sending sensor as far in as I can get it... any ideas or replacement part number from AZ or AA?
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    4. 03-18-2010 #3
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      Jim Nilsen
      Jim Nilsen is offline Registered User
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      I would just use some RTV silicone or non hardening sealer. The reason to not use teflon tape is because it can cause problems with being uneven in the sealing and it has a beter chance of leaking.

      It is a temp sensor and as long as you don't get anything on the sensor area while installing it you should be good.

      You could call Spal and ask them what they use?

      I always hate instructions that say not to do something but then never tell you what to do.
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    5. 03-18-2010 #4
      paul67
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      I was under the impresion that the tape made the sensor give a false reading due to grounding ?
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    6. 03-18-2010 #5
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      Jim Nilsen
      Jim Nilsen is offline Registered User
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      Quote Originally Posted by paul67 View Post
      I was under the impresion that the tape made the sensor give a false reading due to grounding ?
      That is true if the threads don't ever make metal to metal contact.

      The big worry about the tape must be that someone would only tighten the sensor enough to not leak and it wouldn't cut through and make contact. Probably happens more than a guy would think.

      They should still say what kind of sealer they approve of if you can't use tape.

      The RTV could in theory also reduce grounding.

      The sensors for my racepak have their own ground wire which was done to probably reduce any error caused by tape or sealers.

      You could check the resistance from the body of the sensor to the block to see if it is grounded well enough after the install.

      Glad you brought that up
      Last edited by Jim Nilsen; 03-18-2010 at 07:56 AM.
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    7. 03-18-2010 #6
      jamesL0822
      jamesL0822 is offline New to Pro-Touring
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      Good advice guys here's how I fixed it. First i tried putting tape on the top theads only but still leaked so I taped it all and no leak but not grounded good either. So I just ran a ground to it problem solved. Thanks again for everyone's help.
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