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Radiator fan not activating

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Old Jul 30, 2003 | 01:11 PM
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Mag00n's Avatar
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From: UPSTATE 518
Default Radiator fan not activating

Im repairing the front end of my car. Today I put the new radiator in, hooked everything up, including the fan, and let it run for about 15 mins. The car reached core temp after about 5-7minutes but the fan never came on. Is this something to be concerned with or does the fan take longer to activate? Is there a way I can be sure the fan is functioning? Thanks in advance.

Ryan
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Old Jul 30, 2003 | 01:43 PM
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Default

you can jump the two wires that are hooked into the water temp sensor. they should turn on, if not, they are bad.
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Old Jul 30, 2003 | 01:56 PM
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Default Re: (wenlyone)

I think that you need to let it warm up more. If its just sitting, it takes a while to warm up... So take if for a drive and then sit and rev it up to about 3k and see if it comes on after a few miniutes... thats what it took on mine.. Good luck

Blaze
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Old Jul 30, 2003 | 01:59 PM
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Default Re: Radiator fan not activating (sickSOLvtec)

Did you check the fuse under the hood? Do the fans work with the a/c on? It could be a few things, burnt fuse, bad engine coolant temperature switch, or bad fan. Hope this helps.
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Old Jul 30, 2003 | 03:12 PM
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Default Re: Radiator fan not activating (accord2fix)

I think that if you turn out A/C on that the radiator fan will also come on- I had the same problem until my car overheated and the head gasket blew, so be careful..
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Old Jul 30, 2003 | 03:13 PM
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Default Re: Radiator fan not activating (NatedoggAZ)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NatedoggAZ &raquo;</TD></TR><TR><TD CLASS="quote">I think that if you turn out A/C on that the radiator fan will also come on- I had the same problem until my car overheated and the head gasket blew, so be careful..</TD></TR></TABLE>

Yup check your fuses and double check to make sure you hooked up the fan as well.
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Old Jul 30, 2003 | 04:01 PM
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Default Re: Radiator fan not activating (Prelude Vtec 23)

EDIT: I can get the a/c fan to spin when the a/c is on, but its LOUD(which means something musvte been bent and rubbing on it) But the radiator fan does not turn on...

Modified by sickSOLvtec at 1:27 AM 7/31/2003


Modified by sickSOLvtec at 1:34 AM 7/31/2003
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Old Jul 30, 2003 | 09:43 PM
  #8  
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Default Re: (wenlyone)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wenlyone &raquo;</TD></TR><TR><TD CLASS="quote">you can jump the two wires that are hooked into the water temp sensor. they should turn on, if not, they are bad.</TD></TR></TABLE>

the cooling fan should turn on when you do this. if the fan doesn't turn on then it is either not getting power, the fan itself is bad, the cooling fan relay is bad, or the wires for the water temp switch are not correct.
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Old Jul 31, 2003 | 02:41 AM
  #9  
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Default Re: (sleeper4dr)

be sure the radiator has been bled!

-Bryan-
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Old Jul 31, 2003 | 03:06 AM
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Default Re: (EGStreetHtch)

Just keep an eye on the it while you're running the car. Mine did that also, but it eventually came on when it heated up more than the normal operating range. If it doesn't click on, you can temporarily hardwire the fan until you get it solved in order to avoid overheating.
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Old Jul 31, 2003 | 05:12 AM
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Default Re: (wenlyone)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wenlyone &raquo;</TD></TR><TR><TD CLASS="quote">you can jump the two wires that are hooked into the water temp sensor. they should turn on, if not, they are bad.</TD></TR></TABLE>
Make sure that you're jumpering the wire for the fan switch. On my cars that's on the thermostat housing near the lower radiator hose.

The ECT sensor looks sorta similar, but it's located near the upper radiator hose. If you jumper that wire you'll just mess yourself up...
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