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Old 07-10-2019, 11:35 PM   #19
toyotavios_11
 
Drives: Toyota Vios
Join Date: Feb 2013
Location: MY
Posts: 49
is your a/c refrigerant at optimal quantity. please send for pressure check. i doubt your a/c is having low refrigerant.
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Old 07-11-2019, 02:46 AM   #20
bronsin
 
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Drives: 2009 Base Hatch 2 Dr Auto
Join Date: Dec 2008
Location: nj
Posts: 4,790
Car goes to shop friday
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Old 08-09-2020, 06:13 AM   #21
rayfloyd170
 
Drives: Yaris 2016 1.3 Manual
Join Date: Jun 2017
Location: SAUDI ARABIA
Posts: 125
Hi @bronsin Di you solve your rad fan issue running slow? Or you changed with new motor?

Mine has the opposite it always run high speed no matter what and lost the low speed.

I got the gen 3 yaris. I tested the fan relay no.1 and found okay, even swapped it with horn relay which is exact same part number.

I tested fan relay no.2 and found okay too.

I removed the resistor and tested it and got 1.3ohms which is what the spec should be...

I was left with the Pressure Switch but when i tested it also found it to work fine.

Then i remembered, i did an evaporator change about 6 months ago and the mechanic added some oil too during R134a recharge. I was thinking the mechanic may have overfilled my AC system with some refrigerant and ND-8 oil, he didn't use a weighing scale but only had the gauge manifold and touching of the LP pipe.

This led me to vent a little of the refrigerant containing lots of oils (not allowed in U.S.) and there goes my Low Speed Fan kicking and when my engine is hot it uses the High Speed.
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