Abnormal operation of radiator fan

[jvnj]

Masters,

Last year I bought a toy car for my wife, its a 2000 Kia Pride GTX AT. So far, all of the mechanicals are running smooth & well. My only problem is the radiator fan which activates only when the temperature is already very high (almost near the overheat mark). There's no problem if you turn On the AC as the radiator fan runs with the condenser fan. I already tried replacing the thermo switch with a replacement and original brand (tried 2 different sets), but to no avail. Radiator has been cleaned too, and i'm currently using distilled water with coolant. By the way, the thermostat valve was also intact and replaced with OEM last December.

Is there a lower temp rated thermo switch I can buy? Your suggestions will be greatly appreciated.

Thank you

[StockEngine]

was the radiator cleaned inside and out?

[Ry_Tower]

Masters,

Last year I bought a toy car for my wife, its a 2000 Kia Pride GTX AT. So far, all of the mechanicals are running smooth & well. My only problem is the radiator fan which activates only when the temperature is already very high (almost near the overheat mark). There's no problem if you turn On the AC as the radiator fan runs with the condenser fan. I already tried replacing the thermo switch with a replacement and original brand (tried 2 different sets), but to no avail. Radiator has been cleaned too, and i'm currently using distilled water with coolant. By the way, the thermostat valve was also intact and replaced with OEM last December.

Is there a lower temp rated thermo switch I can buy? Your suggestions will be greatly appreciated.

Thank you

Baka puwede i-fix na lang radiator fan sa pag-andar nang makina para sabay na. Or direct mo na lang at i-bypass mo na thermo switch.

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Masters,

Last year I bought a toy car for my wife, its a 2000 Kia Pride GTX AT. So far, all of the mechanicals are running smooth & well. My only problem is the radiator fan which activates only when the temperature is already very high (almost near the overheat mark). There's no problem if you turn On the AC as the radiator fan runs with the condenser fan. I already tried replacing the thermo switch with a replacement and original brand (tried 2 different sets), but to no avail. Radiator has been cleaned too, and i'm currently using distilled water with coolant. By the way, the thermostat valve was also intact and replaced with OEM last December.

Is there a lower temp rated thermo switch I can buy? Your suggestions will be greatly appreciated.

Thank you

Baka puwede i-fix na lang radiator fan sa pag-andar nang makina para sabay na. Or direct mo na lang at i-bypass mo na thermo switch.

[vvti2.0]

Pwede ka magdesign or magpadesign ng circuit na kapag umaandar ang alternator saka lang aandar ang radiator fan mo. Current sensor lang yan. Ampangit kasi nung design na nasa engine on ang switch ng radiator fan.

[rodetor]

Have you check its thermo sensor, for the temp gauge? Accurate or within specs pa kaya? When you activate your A/C, does your temp gauge reads normal range or not?

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[rodetor]

Thermo switch is for radiator fan.
Thermo sensor is for temperatue gauge.

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[jick.cejoco]

Thermo switch is for radiator fan.
Thermo sensor is for temperatue gauge.

Sent from my Starmobile UP+ using Tapatalk

Fan thermo switch-radiator fan

Coolant temperature sending unit-temperature gauge

Coolant temperature sensor-input to the pcm(may also be decision factor to turn radiator fan on)

[t2erns]

i am not familiar with the fan set-up of your kia, but is it really controllled by thermoswitch (if it is, the fan should kick-in after reaching the pre-set temp value)? my guess is, it might be controlled by the ecu based on coolant temperature sensor. do you have 2 fan relays on the fuse block?

[jodski]

Possible faulty relay bro. Check mo din wiring from thermo switch going to fan

[zen..]

Bro try mo i ground yung temp sender wire sa body and check kung hangang saan gauge mo. Dun mo makikita san kalahati ng gauge. Yung iba kasi nagloloko and sobra sobrang doble sa high ang reading

[jvnj]

Masters,

Thank you very much for accommodating my queries, and sorry for my late reply as I've been busy these days and was unable to access Tsikot (the entire internet actually ). Anyways, to answer several questions above, yes, I already did a radiator overhaul (inside and out). Thermo switch has been replaced twice already, original and generic brand tested. Relays have been replaced also to Denso brand as the original exhibits abnormal heating. Wiring's along with the relays has also been checked and even conducted soldering to manual spliced connections. One thing I haven't tried is the grounding of the temp sender as what Sir Jick and Sir Zen has suggested. I was thinking before of directing my fan to the electrical source but very hesitant as this will wear my fan prematurely. Plus, the electrical load will reflect to additional fuel wastage. I will try you suggestions and will update this thread.

Thank you for your support, Masters!

[jick.cejoco]

On killed in action aka KIA the radiator fan is controlled by the PCM through the coolant temperature sensor input. You can test this by grounding terminal 2 of the data link connector(BLK/GRN) wire or grounding terminal 86 of the radiator fan relay

[miked]

kung ako iyan ibbypass ko na pcm. hehe....marami namang source sa internet regarding the simple schematics of the fan

yan ang problema kapag may sariling utak ang sasakyan. hehehe

yun lang e mas madaling itroubleshoot provided may scanner ka.

[jick.cejoco]

kung ako iyan ibbypass ko na pcm. hehe....marami namang source sa internet regarding the simple schematics of the fan

yan ang problema kapag may sariling utak ang sasakyan. hehehe

yun lang e mas madaling itroubleshoot provided may scanner ka.

That's the problem. We immediately resort to nigger rigging or mcgyvering rather than doing the correct diagnosis and repair

[miked]

That's the problem. We immediately resort to nigger rigging or mcgyvering rather than doing the correct diagnosis and repair

relax chief. alam ko namang mas lalong magiinarte ang makina once na binypass ang pcm.

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That's the problem. We immediately resort to nigger rigging or mcgyvering rather than doing the correct diagnosis and repair

relax chief. alam ko namang mas lalong magiinarte ang makina once na binypass ang pcm.

[Je Jacaban]

Thermo switch ba may problema pag mahina umikot ang rad fan at aux fan? Ok nman yung fan pag naka unplug sa thermo switch. Ok din naman mga relay ko.

[rodetor]

Una, kapag binunot mo ang plug connector para sa thermo switch, dapat hindi aandar yan. Pangalawa, sa sinabi mo kapag mag sabay na umandar, humihina takbo ng fan pareho. May madagdag kapa sa koneksyon na electrical load sa maling pagkaka wire nyan, tiyak hihina pa ang andar ng parehong fan. Obserbasyon ko. May mali sa wiring, pati ang ginamit na gauge para sa wire.

Starmobile Up+

[wakpng1986]

Masters,

Last year I bought a toy car for my wife, its a 2000 Kia Pride GTX AT. So far, all of the mechanicals are running smooth & well. My only problem is the radiator fan which activates only when the temperature is already very high (almost near the overheat mark). There's no problem if you turn On the AC as the radiator fan runs with the condenser fan. I already tried replacing the thermo switch with a replacement and original brand (tried 2 different sets), but to no avail. Radiator has been cleaned too, and i'm currently using distilled water with coolant. By the way, the thermostat valve was also intact and replaced with OEM last December.

Is there a lower temp rated thermo switch I can buy? Your suggestions will be greatly appreciated.

Thank you

The coolant temperature sensor is used to measure the temperature of the engine coolant of an internal combustion engine. The readings from this sensor are then fed back to the engine control unit (ECU), which uses this data to adjust the fuel injection and ignition timing.