AC stop cooling at highway speed (> 100 kmph) - Toyota Yaris Forums

perfectillusion · 01-05-2018, 06:09 PM

Hello Members,

I have toyota yaris 2012. Issue is with AC, it stops cooling at highway speeds or more than 100KMPH. Within city AC is working great.

Here are few tests i have done so far:

1. AC system is charged properly (checked with 2 different shops)
2. On highway when it stops cooling, I turn off AC and shift to Neutral gear and turn on AC again and it starts cooling immediately but stops after 2-3 minutes.
3. Car has clutch less compressor so clutch gap is out of question.

Recently changed evaporator core.

I have been told that compressor is bad but want to make sure if it is really compressor or something else causing it.

I would really appreciate your help and suggestions.

ncp13 · 01-06-2018, 06:10 AM

Chech the pressures of the ac system while reving the engine to the higway rpm range.

01-05-2018, 06:09 PM	#1
perfectillusion I've made a post! Drives: Toyota Yaris Join Date: Jan 2018 Location: Saudi Arabia Posts: 1	AC stop cooling at highway speed (> 100 kmph) Hello Members, I have toyota yaris 2012. Issue is with AC, it stops cooling at highway speeds or more than 100KMPH. Within city AC is working great. Here are few tests i have done so far: 1. AC system is charged properly (checked with 2 different shops) 2. On highway when it stops cooling, I turn off AC and shift to Neutral gear and turn on AC again and it starts cooling immediately but stops after 2-3 minutes. 3. Car has clutch less compressor so clutch gap is out of question. Recently changed evaporator core. I have been told that compressor is bad but want to make sure if it is really compressor or something else causing it. I would really appreciate your help and suggestions.

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01-06-2018, 06:10 AM	#2
ncp13 Drives: 01 Yaris TS Join Date: Jan 2017 Location: Athens Greece Posts: 92	Chech the pressures of the ac system while reving the engine to the higway rpm range.