hello mr.scotty 😀
i have 2015 yaris sedan 1.3 automatic4gears

(asian , not rebadged mazda)
with 220k km .. or 135k mile...
my car heated a bit yesterday
heat light was "flashing ON/OFF/ON/OFF..."
& PC stopped working(safety feature when heated?)
so i turned off PC & drove home
next day i started the car
when i opened the CAP .. there was slight pressure
or few water bustout
checked water(toyota coolent water) in engine & its side bottle
there were full & at mark...
water didnt have oil in it
also when it heated again(only when not moving & AC ON)
i check coolent pipe pressure & it had it...
i opened AC at MAX & i see the fan spins
its a 1fan with 2x speeds "low & high"
im not sure if the "high spin" is "THAT high"
or if its from the thermostat
oil is clean & not low...
valve sounds are a bite high cuz i once put cheap oil & drove more 2k mile on its recommandation
but no heat since then...
before this heat problem
i once rav it high chasing somebody
but not constantly high raving
only once or twice it reached 6000
i watched some of ur vids
have no tools to test
no honest mechanics here or knowledgable
& over seas from where u r...
will it break the car if i drove it like this? since it doesn't heat when im moving/raving?
& what might be the problem...
UPDATE:
i see the "2speed fan"
run on slow speed when AC fan run at 1
& run at 2nd speed(fast speed) when maxing AC fan to 4
& but when on 1
& it heats
the highspeed fan dont trigger...
is there different sensor
between:
1*highspeed cooling fan .. triggering with AC fan at speed4
&
2*highspeed cooling fan .. triggering when engine heats...
?
cuz i see it triggers the highspeed coolant with only the first option...
& which/where is that...
sry no mechanics around me to traceback
most of them just guess from there bags...
UPDATE: SOLVED
turned out the fan was weak
the engine sound covered the fan sound on its 2nd(high)speed
&
from the few video's i found on ur channel
they covered & NOT working fan
& not weak fans
so i was with the mind set of "either it works or broke .. no half working..."
therefore i dismised the idea of it gotten weakened over time (6~7years &or 135k mile or 200k~220k km)
but while i was on the parkinglot of a toyota dealer pricing all parts to change them all .. another yaris parked next to me & its fan(OEM) newly changed... was LOUD & fast... & we poped both car hoods & ya .. my fan system was working fine .. but it was WEAK...
anyways thx Mr.scotty
ur vidz & efforts helped me alot...<#
BTW
just to let ya know so you dont insult a "yaris" brand xD
the yaris in the:
USA is a mazda rebadged
but
the EU/asian:
are pure toyota desine & manufactured... assembaled around EU&asia...
& its very dependable everyday car specially here in jeddah where heat gets too hot .. toyotas are the only cars driving with AC ON with no problems...
& ya my ride might be tripping
fan burning & engine valv sound
but after some abuse
of adding(once) low quality oil & driving 2k mile mover the recommanded mile...
& like 1~3 times a week i sleep(4~7h) in the car while its running
& thats burning oil & yet & i dont count that on my oil change & change it every around 6k-mile or 10k-km...
& the only complain about it from the manufactury .. is how noisy it is .. but some sound assulation material would help with that .. even though i didnt bother...
thx again mista 😀
I’d fix it sooner than later before you damage your engine, past the point of no return -
If it had pressure even after setting a long time odds are the head gaskets blown do my video how to tell if your head gasket is blown Scotty
sry
i did the cold start up again while the cap is off
& there was no air or bobbles coming out of the cap
and no air pressure as will
maybe that air pressure i talked about was some water on the cap from the inside that splashed when removing the cap
& no oil/coollent mix...
however
i did watch ur vid on "fan"
my fan does run sometimes (not sure whats up)
& when heated .. i should've heard the loud fan sound .. trying to cool the car
but some times i dont hear it
i get mix sound between my fan sound & AC compressor sound
since the engine is quiet...
& based on that video
could it be the relay?
sry we are on holiday & michanics wont open till 3~5days from now...