1998 Honda Civic Logo
Posted on Oct 23, 2010
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I changed the thermo fan switch but the fan still dont turn on.. i grounded the conection (plug) and the fan turns on... can it be the actual wire connector (plug) that doesnt sit correctly on the Thermo fan switch?

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Jeffrey Turcotte

Jeffrey Turcotte

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  • Honda Master 8,991 Answers
  • Posted on Oct 23, 2010
Jeffrey Turcotte
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Yes, it can be the plug, but you can check it with a test light when the engine is hot to see if there is voltage. It might also be the cooling fan relay.

Please see my tip at http://www.fixya.com/cars/r6022358-relay_check . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.

  • coolcdrw Oct 23, 2010

    i checked all fuses, and the relay.. i even replaced them... their are good.. i bought a new thermo switch ...BUT... i found the problem.. its the thermostat... this is what i did..
    I got the old thermo switch pluged it into the harness. then i got a small blow torch thing, added heat and the fan turned on....i turned the car on and notice the bottom hose was way cooler than the one on top... so i think its the thermostat... gonna replace it tonight..!!..thanks guys for ur quick answers...

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  • Master 2,427 Answers
  • Posted on Oct 23, 2010
Anonymous
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Hmmm maybe its a bit more simple,, check the fan fuse in the fuse box under the hood.. there is also a relay there as well that controlls it,, check both,, BTW the fan only turns on when the engine turns a certain temperature

  • coolcdrw Oct 23, 2010

    i checked all fuses, and the relay.. i even replaced them... their are good.. i bought a new thermo switch ...BUT... i found the problem.. its the thermostat... this is what i did.. I got the old thermo switch pluged it into the harness. then i got a small blow torch thing, added heat and the fan turned on....i turned the car on and notice the bottom hose was way cooler than the one on top... so i think its the thermostat... gonna replace it tonight..!!..thanks guys for ur quick answers...

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