2008 Yaris issues - Toyota Yaris Forums

Fancy_necromancy · 05-21-2022, 03:58 PM

I have a 2008 Yaris. 230k. The air conditioner just went out? Fan is working fine, motor for that was replaced in 2018. I can turn the AC on & it will work until i get home, about 10 minutes, then just be 🥵 air. All belts seem to be working. I just had an oil change, they checked it & said Freon was full. I know jack about john so any help would be great 👍. Ty!

sh0rtlife · 05-23-2022, 04:11 PM

really only a handfull of options,
1:the pressure switch AKA hvac "pressure transducer"(most common issue tho not sold thats your issue as you do get some function)
2:the solenoid in the compressor aka "control valve"
3:the expansion valve at the heater box side of the lines(second most likely)

outside of that..too high or too low of pressures, and low oil causing pump heat could also cause it

in all honesty AC systems are fairly simplistic with only 3 working parts, the pump/clutch, a switch and an orifice(expansion valve) the orifice controls the pressure to create cold, the pump makes pressure, and the switch keeps tabs on the pressure, then you have the non moving parts IE the condensor(the radiator for the ac) and the evaporator(the heater side for the cold)
thats the entirety of AC, then you add freon to X pressure based on X tempeture and bobs your uncle

05-21-2022, 03:58 PM	#1
Fancy_necromancy Zero clues or F**ks Drives: 2008 2 door Yaris hatchback, b Join Date: May 2022 Location: Lampasas TX Posts: 1	2008 Yaris issues I have a 2008 Yaris. 230k. The air conditioner just went out? Fan is working fine, motor for that was replaced in 2018. I can turn the AC on & it will work until i get home, about 10 minutes, then just be 🥵 air. All belts seem to be working. I just had an oil change, they checked it & said Freon was full. I know jack about john so any help would be great 👍. Ty!

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05-23-2022, 04:11 PM	#2
sh0rtlife Drives: 2007 5dr canadian import Join Date: Dec 2016 Location: pacific north WET Posts: 1,025	really only a handfull of options, 1:the pressure switch AKA hvac "pressure transducer"(most common issue tho not sold thats your issue as you do get some function) 2:the solenoid in the compressor aka "control valve" 3:the expansion valve at the heater box side of the lines(second most likely) outside of that..too high or too low of pressures, and low oil causing pump heat could also cause it in all honesty AC systems are fairly simplistic with only 3 working parts, the pump/clutch, a switch and an orifice(expansion valve) the orifice controls the pressure to create cold, the pump makes pressure, and the switch keeps tabs on the pressure, then you have the non moving parts IE the condensor(the radiator for the ac) and the evaporator(the heater side for the cold) thats the entirety of AC, then you add freon to X pressure based on X tempeture and bobs your uncle