hmtcrxsir

I have a 93 Honda Civic EX and recently I had a radiator problem (water was leaking) so I changed that. But for some reason the radiator fan doesnt turn on. I jumped the radiator fan and it was working and I also place a piece of wire in between the temperature sensor harness and it turned on. So im suspecting that the temperature sensor on the thermostat housing is bad. But im not sure. I checked all the fuses and it all seems to be fine and not blown. Oh and another thing is should I replace the thermostat first before I replace the temperature sensor because that little sensor cost nearly $100 from Honda. The coolant in the radiator was full so i doubt it would be that as well.

TravisCadello

No, if you jumped the sensor connector and the fan came on then you have a fan switch problem and everything else is good like the relay and fuse.

Replace this switch with one from the junk yard that or pull yours off and clean it real good and try again.

and the thermostat don't have anything to do with the fan.

bigD

you can pick up the mishimoto fan switch for $40

Mishimoto

Here is the link if you would like to check ours out. Our switch comes with a no-questions-asked 1 year warranty, so if it for some reason it breaks, or if you get into an accident, we will replace it free of charge!

http://www.mishimoto.com/mishimoto-h...mo-switch.html

monkey_boi

i am sorry to say but that honda dealer is shaddy i had the same problem and the dealership i went to stated that it would be 40.00 for the sensor but before you take shiet apart do this check the engine code frst, if it gives you an6 quick flashes then you have a wts problem.
and yes if you do replace the senore replace the thermostat

p.s. follow this
link to check codes if you do not know how
https://honda-tech.com/forums/honda-civic-del-sol-1992-2000-1/engine-swap-info-faqs-how-ck-engine-lights-878010/