cooling fan

[JungloSonic]

The cooling fan on my sonic goes on at 108 degrees celcius. about 225 farenheit. Can anyone confirm if their's goes on about the same temp. I think my low speed is not working.

 

[MarkS]

I observed my cooling fan turning on at 226 F. I believe the thermostat is 221 F, which seems awfully high.

You are good to go.

 

[gus t]

The cooling fan on my sonic goes on at 108 degrees celcius. about 225 farenheit. Can anyone confirm if their's goes on about the same temp. I think my low speed is not working.

today i did a test drive with a obd live data temp output on my sonic 2012 1.8 - temp spread was from 217F to 225F for a 1/2 hour test run - cooling fan never came on - guys on utube are telling us these sonics are programed to run at higher temps - my other cars cycle from 185F to 188F consistently - the red high temp warning indicator has never come on - they have a high threshold - when they come on for too long your already in trouble - it may be too late so my obd scanner is now plugged in permantly

 

[JungloSonic]

today i did a test drive with a obd live data temp output on my sonic 2012 1.8 - temp spread was from 217F to 225F for a 1/2 hour test run - cooling fan never came on - guys on utube are telling us these sonics are programed to run at higher temps - my other cars cycle from 185F to 188F consistently - the red high temp warning indicator has never come on - they have a high threshold - when they come on for too long your already in trouble - it may be too late so my obd scanner is now plugged in permantly

Thanks for posting your temp. Looks like the cooling system on these engines tries to keep temp at 225 or just below. My valve cover gasket is leaking slightly. I bet with high temp comes potential oil leaks especially at gaskets. I am considering replacing the gasket soon. On a side note, I wonder if anyone has looked into how frequently their ac compressor cycles (mine is on for about 7 sec and off about 10 sec then repeats when cabin fan speed is at 2). This may be normal or not but I would like someone else to confirm if possible. If it is not normal, then I need to get it checked out before the compressor goes.

 

[JungloSonic]

Gus t, You may want to idle your car to let temp go to around 230 degrees and see if it turns on. If it doesn't by 230, you should look into low speed fan concern. Your range looks very normal for this engine. The high speed fan goes on around 236 on mine.

 

[gus t]

J - i got this 1.8 sonic in aug 2024 - not once did i notice the fan come on - last week i put 12v to the fan and it works but the resistor is completly decomposed so i ran 12 gauge wire to the inside fused with a 15 amp house light switch - i can manually flick the fan to regulate the temp - as i said in my previous memo i'm monitoring the temp with my obd live data reader and i feel safe knowing the exact temp since these models have no temp reader

 

[gus t]

Thanks for posting your temp. Looks like the cooling system on these engines tries to keep temp at 225 or just below. My valve cover gasket is leaking slightly. I bet with high temp comes potential oil leaks especially at gaskets. I am considering replacing the gasket soon. On a side note, I wonder if anyone has looked into how frequently their ac compressor cycles (mine is on for about 7 sec and off about 10 sec then repeats when cabin fan speed is at 2). This may be normal or not but I would like someone else to confirm if possible. If it is not normal, then I need to get it checked out before the compressor goes.

J - also about your ac cycling issue i cant comment since i dont use ac in my cars up here in north western vermont - on older cars the ac fails so i just disconnect the compressor belt and save a little power

 

[gus t]

J - also about your ac cycling issue i cant comment since i dont use ac in my cars up here in north western vermont - on older cars the ac fails so i just disconnect the compressor belt and save a little power

now i need to go over to the charging system output changing thread for some advice