Honda Civic / Del Sol (1992 - 2000) EG/EH/EJ/EK/EM1 Discussion

Radiator fan problem.

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Old May 23, 2007 | 03:28 PM
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Default Radiator fan problem.

-Ive searched site already.

My problem is that my radiator fan does not swicth on when my car starts running hot. The temp gauge does go to high and when I do a straight line to the fan it turns on. I cant seem to figure out what is wrong with it. Any idea would be great, any smart comments you can keep the receipt. I know taking out the core of the thermostat would let it run cool all day long but I prefer to fix the problem straight up.

Thanks in advance,
-Jeff.
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Old May 23, 2007 | 03:29 PM
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Default Re: Radiator fan problem. (American.Graffiti)

Its either two things, its either the fan relay, or the coolant switch. Or a wiring issue.
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Old May 24, 2007 | 08:45 AM
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Default Re: Radiator fan problem. (RCautoworks)

I am getting a reading on it being hot which is the reason why I believe it isnt the coolant switch. And if it were the fan relay why would it turn on when I run straight wires to the batt?

-Jeff.
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Old May 24, 2007 | 08:47 AM
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Default Re: Radiator fan problem. (American.Graffiti)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by American.Graffiti &raquo;</TD></TR><TR><TD CLASS="quote">I am getting a reading on it being hot which is the reason why I believe it isnt the coolant switch. And if it were the fan relay why would it turn on when I run straight wires to the batt?

-Jeff.</TD></TR></TABLE>

beacause when you are running straight wires to the battery, you are bypassing the relay.....
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Old May 24, 2007 | 08:55 AM
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Default Re: Radiator fan problem. (94hatchling)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 94hatchling &raquo;</TD></TR><TR><TD CLASS="quote">

beacause when you are running straight wires to the battery, you are bypassing the relay.....</TD></TR></TABLE>

Yep, bypass the coolant switch by sticking a paper clip in it. If it still does not come on, its the relay.
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Old May 24, 2007 | 09:00 AM
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Default

you're looking at two different things. The thermo switch is what triggers the fan to come on, not what runs to the gauge.

Do what the guy above said and try jumping the plug.
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Old May 24, 2007 | 09:52 AM
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Default Re: Radiator fan problem. (94hatchling)

And if its the really I can just buy a new one or do I have to get a whole new fan assembly?
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Old May 24, 2007 | 10:38 AM
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Default Re: Radiator fan problem. (American.Graffiti)

I just purchased my fan switch(thermoswitch) from hondapartsdeals.com or one of those sites(cant remember) for about $45 shipped... Genuine OEM.

Isnt there also a switch on the cylinder head (ECT switch) or something?


Edit: On hondapartsdeals.com its about 27.34(thermoswitch - under engine/subcord/#15) I believe and I just bought some other stuff from there and shipping was about $6 to Cali.
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Old May 24, 2007 | 11:05 AM
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Default Re: Radiator fan problem. (95ProjectEJ1)

i had this problem and it was the thermoswitch. Its an easy fix!
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Old May 29, 2007 | 09:56 AM
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Default Re: Radiator fan problem. (BDogggUT34)

I jumped it and if didnt work. Now here comes a dumb question, where is the the thermo switch located? or better yet what color are the wires so I can locate it.

Thanks in advance,
jeff.
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Old May 29, 2007 | 05:06 PM
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Default Re: Radiator fan problem. (American.Graffiti)

What year is it, what trim do you have?
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