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Kia Rio 2010 (KIA Rio II, 1.4 16V 97CV)
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Discussion Starter #1
Summer is approaching, So my problem with the fan which only on at high speed (at 104°C) without through to low speed (at 94°C).
which obliges me to open the air conditioner to avoid overheating the engine (that with it the fan even starts at low temperature around 80 ° C)
I tested all the relays, connections,fuse everything is fine.
I thought of the radiator-fan resistor that I could not find its location for this model Kia Rio (II or JB) 2010 phase 2.
with this info especially the electric shemas, someone can help me or is the problem?
thx in advance
RADIATOR (02/02) KIA RIO 05: -SEP.2006 (2005-2006) [Europe]
FamilyRio
VehicleCategoryPassenger
Modelyearfrom2006
Modelyearto2011
OptionsEngine size: (A5) 1400 CC - ALPHA DOHC;Engine: (6) DOHC - MPI;Weather Type: (1) WEATHER - THE TROPICAL ZONE;Fuel Type: (1) GASOLINE - UNLEADED;А: (5) MANUAL T/M - 5 SPEED 2WD;Trim: (S4) SEDAN - 4DR 5P;Steering: (L) DRIVE TYPE - LHD
 

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2008 Kia Rio LX Oklahoma
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3 Posts
Summer is approaching, So my problem with the fan which only on at high speed (at 104°C) without through to low speed (at 94°C).
which obliges me to open the air conditioner to avoid overheating the engine (that with it the fan even starts at low temperature around 80 ° C)
I tested all the relays, connections,fuse everything is fine.
I thought of the radiator-fan resistor that I could not find its location for this model Kia Rio (II or JB) 2010 phase 2.
with this info especially the electric shemas, someone can help me or is the problem?
thx in advance
RADIATOR (02/02) KIA RIO 05: -SEP.2006 (2005-2006) [Europe]
FamilyRio
VehicleCategoryPassenger
Modelyearfrom2006
Modelyearto2011
OptionsEngine size: (A5) 1400 CC - ALPHA DOHC;Engine: (6) DOHC - MPI;Weather Type: (1) WEATHER - THE TROPICAL ZONE;Fuel Type: (1) GASOLINE - UNLEADED;А: (5) MANUAL T/M - 5 SPEED 2WD;Trim: (S4) SEDAN - 4DR 5P;Steering: (L) DRIVE TYPE - LHD
Might be the thermostat - should be simple enough to replace.
 

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99 Kia Elan 1.8L, 17 Ford Edge Sport 2.7L V6, 15 Mustang 3.7L V6, 08 Harley Nightrain
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Super Moderator
99 Kia Elan 1.8L, 17 Ford Edge Sport 2.7L V6, 15 Mustang 3.7L V6, 08 Harley Nightrain
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10,607 Posts
Toyota and Datsun both had an overheating problem that was semi managed with blowing the heater to keep engine cool - both times it was the thermostat.
Please don't make suggestions based on guessing - here we only promote a diagnostic approach, ......but if it's a "guess" lets make that clear.

Using the heater to increase the cooling works on almost all makes, but when this workaround is needed, the cause of the cooling system malfunction isn't always the thermostat.
 

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Kia Rio Pride JB 1.4 4GEE 2011 RHD
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19 Posts
Had the same problem, goes to a dealer to check the ECU. Using OBD tools send command to the ECU for low speed the fan work, send command for high speed, its Ok. They judge its the fan on right side near the battery had worn out. I already replace ECT and the motor fan. Did not work for me. Alass.. Still a mystery...

Sent from my Redmi Note 5 using Tapatalk
 

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2014 Kia Rio
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127 Posts
Summer is approaching, So my problem with the fan which only on at high speed (at 104°C) without through to low speed (at 94°C).
which obliges me to open the air conditioner to avoid overheating the engine (that with it the fan even starts at low temperature around 80 ° C)
I tested all the relays, connections,fuse everything is fine.
I thought of the radiator-fan resistor that I could not find its location for this model Kia Rio (II or JB) 2010 phase 2.
with this info especially the electric shemas, someone can help me or is the problem?
thx in advance
RADIATOR (02/02) KIA RIO 05: -SEP.2006 (2005-2006) [Europe]
FamilyRio
VehicleCategoryPassenger
Modelyearfrom2006
Modelyearto2011
OptionsEngine size: (A5) 1400 CC - ALPHA DOHC;Engine: (6) DOHC - MPI;Weather Type: (1) WEATHER - THE TROPICAL ZONE;Fuel Type: (1) GASOLINE - UNLEADED;А: (5) MANUAL T/M - 5 SPEED 2WD;Trim: (S4) SEDAN - 4DR 5P;Steering: (L) DRIVE TYPE - LHD
Have you checked the function of the ECT, engine coolant temperature, switch? That is the sensor I would be looking at to make sure it is functioning properly. Using a scanner to see what the car thinks the temperature is. Checking to see if the temperature is substantially different then what it should be. For example is it saying that it is 0Celcius, with the car off, when obviously it is 45Celcius outside.
 

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2014 Kia Rio
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127 Posts
Looks like the 2010 and 2014 models, at least in the USA, use the same ECT. So I am providing numbers form the 2014 Service Manual.

Here are some ohm readings you should get at different temperatures when doing an OHM check on the ECT when it is removed from the car...

20C = 2.31 to 2.59K OHM
40C = 1.15K OHM
60C = 0.59K OHM
80C = 0.32K OHM
 

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Kia Rio 2010 (KIA Rio II, 1.4 16V 97CV)
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4 Posts
Discussion Starter #9
Thank you all for your fruitful responses.
sorry for the quality of my writing because I am French speaking.
1- I have already changed an original ECT nothing has changed.
2- The electrician believes that the problem in the fan motor or in ECU, but I find that this is not logical! (but why the fan works at high speed and with air conditioner? and for the ECU proposal why does it do everything right except for the low speed FAN command?) .
3- I do a check with ODB2 there is no problem, in this process, I noticed that the temperature reading of the coolant is very correct (when the car is left for a very long time I even find the temperature outside similar to coolant temperature ).
4- Someone who has the same model to specify the location of radiator-fan resistor (is it the one that is stuck to the fan) circled in red?
5- Thank you for offering me a solution.
 

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2014 Kia Rio
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127 Posts
I would think that device circled in red is the fan resistor. Does the connector on the fan have three pins? If so, than one is for low speed, another one is high speed, and the last one would be ground. The low speed power goes through the resistor. The drop in voltage will cause the fan to run at low speed. If the resistor is bad, most likely just broken, then the power would not pass through the resistor. Of course no power and the fan will not work.

If it is not possible to get just the fan resistor a used fan assembly is the way to go.

An interesting side note is that US model 2010s do not seem to use a fan resistor. Rockauto shows a two pin connector for the 2010. The 3G has a fan resistor. At least in the 2014.
 

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2014 Kia Rio
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127 Posts
I am posting a schematic of the fan for the 2014. Hopefully it will work the last couple schematics that I posted were not showing up right. You will notice that the fan has a resistor at pin 2. If there is an issue with the resistor the low speed side will not work. High speed is full voltage at pin 1. Pin 3 Ground. Your vehicle may not be the same. I just posting this for additional information.

Fan.jpg
.
 
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