2000 Radiator fan problem - Hyundai Forum: Hyundai Performance Forum
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#1 Old 08-20-2004, 05:47 PM
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Default 2000 Radiator fan problem

foe some reason both of my fans are not working. i have no idea why the hell they dont spin. and when the car sits at an idle it will overheat. the fuses are good so that is not the problem. what else could it be? I had the fans partially out of there spot the other day but i dont see how this could have effected anything. it seems like there is just one wire connectiong to each fan that should make it spin and that wire goes directly to the fuse box. maybe i am over looking something. please help me.

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#2 Old 08-20-2004, 10:37 PM
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Default Re: 2000 Radiator fan problem

if im remembering right I think the coolant temp sensor has a role in when the fans turn on off cause it takes the reading from the coolant temp and then tells the ECU to kick them on and off at the set temp. If its set up this way and your sensor aint workin then basically the ECU dont know to kick them on and you overheat. Try turning the AC on and see if they come on to rule out anything. If they dont come on still, check wiring, then like before id check your coolant temp sensor cause I got a feeling thats why its overheating.
someone correct me if im wrong but that could be where your problem is.


[Edited by elantrax on Aug 20, 2004 6:38 PM]

[Edited by elantrax on Aug 20, 2004 6:39 PM]

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#3 Old 08-21-2004, 09:25 PM
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Default Re: 2000 Radiator fan problem

Yes the temp sensor tell the ECU when to turn the fans on. BUT if the sensor were not working then he would get no reading in his temp guage
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#4 Old 08-21-2004, 10:20 PM
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Default Re: 2000 Radiator fan problem

relay? possibly

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#5 Old 08-21-2004, 11:14 PM
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Default Re: 2000 Radiator fan problem

Quote:
Originally posted by elantrax
[body]
relay? possibly
[/body]
I was thinking it could be as simple as a fuse but a bad relay or sending unit also can cause the problem as well. A bad fan motor also can be bad as well.

Try using a test light for power and jumping the fans directly to the battery to see if they work. If they do, check the fuses and relays.

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#6 Old 08-22-2004, 07:46 AM
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Default Re: 2000 Radiator fan problem

Ok You say it could be the cold air sensor and i think you may be on to something. I just installed a new intake in my car. What exactly is the cold air sensor. IS it the IAT(Intake Air Temperature Sensor, the little one that comes first on the intake line) or is it the MAF(mass air flow sensor). Could these two sensors have alot to do with each other? because......i fucked fucked up the MAF when i did this the first time. If you look inside of it there are 3 little paper thin tips about 5/8' long i messed up the one in the middle resulting in my car iradically ideling. i have a new one of these on the way. but when i did a little research after hearing what you guys had to say it seems like it would be more likely to be the IAT, but if the are interconnected in some way then i gues that could be it.

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#7 Old 08-25-2004, 03:23 AM
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Default Re: 2000 Radiator fan problem

Quote:
Originally posted by wesburrough
[body]
Ok You say it could be the cold air sensor and i think you may be on to something. I just installed a new intake in my car. What exactly is the cold air sensor. IS it the IAT(Intake Air Temperature Sensor, the little one that comes first on the intake line) or is it the MAF(mass air flow sensor). Could these two sensors have alot to do with each other? because......i fucked fucked up the MAF when i did this the first time. If you look inside of it there are 3 little paper thin tips about 5/8' long i messed up the one in the middle resulting in my car iradically ideling. i have a new one of these on the way. but when i did a little research after hearing what you guys had to say it seems like it would be more likely to be the IAT, but if the are interconnected in some way then i gues that could be it.
[/body]
i did not say your IAT i said your ECT(engine coolant temp sensor)
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