leak points, are common, many.
at the compressor main shaft seal,
at all compressor other seals, at the pipe junctions and the manifold plate on this compressor. (and pipe damage, bent , cracked crushes, etc)
try to understand , you can not fix cars using statistics. (educated guessing is not going to work)
cars do not read statistical data. they fail as they wish. ( If you look its just 2 pipes/compressor and a dryer to inspect a loop , under hood.)
That is why your A./C man use the dye test and lamp. to find the leak.
after all, he already knows its leaking, (adding R134a over and over, gee it leaks)
but then he checks all the easy places first. right? he is lazy and smart, then by the "process of elimination" of easy points of failure works the the harder places.
or knows by very careful checking OOPS, all the objects under hood DO NOT LEAK (an example) so therefor the EVAP end is leaking.
how he proceeds here, is HIS call, and depends on the car, and if car AC box can be removed, with lines attached, (this car may be like that, it has separate AC box. (most times this end does not leak .but,,,, fate always wins)
so he loosens the box, (evab box) and shines his UV lamp at the evap core, and sees the leak.?
most shops will just say, sorry customer, you need a new evap.
As you can see the makers of cars don't make it easy to diagnose, with a nice inspection cover, there.... no.
nor can you remove this missing cover and see the core ICE up, (yes, another class of failure and kEY symptom for accurate diagnosis)
what does under the roof mean? (hood?)
the machanic said 3c or 4c, but the official table from SUZUKI contradicts your mechanics words.
3c , is a false proclamation. pure. find a new A/C man.IMO
each car is different.
the size of the cores matter, when its hot and for sure when the car is in a country with huge humidity 70 to 90% there is HUMID.
and the evap core has a fixed size and is unique to this car, and that table is for YOUR car , not a LEXUS.
when the air is humid , that air is closer to water, not like like dry air. (as seen in Nevada desert)
it's near total water saturated air...
and that is heavy air, called more dense.
and that more dense air takes more energy to cool it , at the evap core. this is why the air temps are not good, when humid. (per posted table above, for your car)
the vent can not be 3c, for the air to be 3c there, the core would need to be below 0c. (see?) and if at 0c, that humid air freezes and ice builds and block the core.
3c is BOGUS.
tell me why 3c, is a demand... would love to hear why.?
A/C is not magic, it has great limits. That table lists them clearly and is for your car not a LEXUS.
it does not cool the same way at all temps and humidity,
i posted the official suzuki table to you , and shows the performance.
seems in the shop , (in a covered garage (roof?) the AC does 8c at vents parked, 8c exceeds factor spec, for sure. 8c is super cold.
what have you not said, (lots) when does the AC work good, ?
works perfect at 100kmh, ? on a real road, at 40c ambient. im sure its 70% humidly there in your country, use a real weather report yours, is lacking.
Driving for 20 miles, not 1 mile, (it takes a very long time to cool off a 40C 2000 pound car.)
if the performance is lacking , when,under what conditions? (tell all conditions, pretend the web helper cant driver your car)
below 20mph, or only parked, (stopped)
when the performance lacks do you exit car and open the hood to see if the compressor is engaged>?
when performance is lacking does the front condenser fan run fast?
these facts and 100s more is why web help can not ever do you any good.
and the lack of tools.
after all you are asking for help , SECOND guessing your mechanic.
ok roof , is enclosed shaded garage.
but the air is still 40c.
the only difference parked out side, is how long it takes car to cool down,. answer can take 20miles of fast driving,
your high side pressure look low but since RPM is not 2000 , i cant really comment.
at the compressor main shaft seal,
at all compressor other seals, at the pipe junctions and the manifold plate on this compressor. (and pipe damage, bent , cracked crushes, etc)
try to understand , you can not fix cars using statistics. (educated guessing is not going to work)
cars do not read statistical data. they fail as they wish. ( If you look its just 2 pipes/compressor and a dryer to inspect a loop , under hood.)
That is why your A./C man use the dye test and lamp. to find the leak.
after all, he already knows its leaking, (adding R134a over and over, gee it leaks)
but then he checks all the easy places first. right? he is lazy and smart, then by the "process of elimination" of easy points of failure works the the harder places.
or knows by very careful checking OOPS, all the objects under hood DO NOT LEAK (an example) so therefor the EVAP end is leaking.
how he proceeds here, is HIS call, and depends on the car, and if car AC box can be removed, with lines attached, (this car may be like that, it has separate AC box. (most times this end does not leak .but,,,, fate always wins)
so he loosens the box, (evab box) and shines his UV lamp at the evap core, and sees the leak.?
most shops will just say, sorry customer, you need a new evap.
As you can see the makers of cars don't make it easy to diagnose, with a nice inspection cover, there.... no.
nor can you remove this missing cover and see the core ICE up, (yes, another class of failure and kEY symptom for accurate diagnosis)
what does under the roof mean? (hood?)
the machanic said 3c or 4c, but the official table from SUZUKI contradicts your mechanics words.
3c , is a false proclamation. pure. find a new A/C man.IMO
each car is different.
the size of the cores matter, when its hot and for sure when the car is in a country with huge humidity 70 to 90% there is HUMID.
and the evap core has a fixed size and is unique to this car, and that table is for YOUR car , not a LEXUS.
when the air is humid , that air is closer to water, not like like dry air. (as seen in Nevada desert)
it's near total water saturated air...
and that is heavy air, called more dense.
and that more dense air takes more energy to cool it , at the evap core. this is why the air temps are not good, when humid. (per posted table above, for your car)
the vent can not be 3c, for the air to be 3c there, the core would need to be below 0c. (see?) and if at 0c, that humid air freezes and ice builds and block the core.
3c is BOGUS.
tell me why 3c, is a demand... would love to hear why.?
(05-28-2016, 10:51 PM)rasmeidirt Wrote: Vent is 8C is under the roof. The mechanic says it should be either 3 or 4. (this is bogus)
Outside the shop in the sun is around 40C (ambient temperature). yes, hot,
Humidity outside? They do not have the tool to tell me!! (you dont need a tool, call the local radio station he knows,as does your air port)
Idle speed is 1000RPM because AC is engaged. (done wrong, 2000 rpm is spec, test speed, ) sorry, do the tests correctly.
You said it is cold, unless we drive the car under the roof! (i have no idea what that means.... you need to type a long story on that)
A/C is not magic, it has great limits. That table lists them clearly and is for your car not a LEXUS.
it does not cool the same way at all temps and humidity,
i posted the official suzuki table to you , and shows the performance.
seems in the shop , (in a covered garage (roof?) the AC does 8c at vents parked, 8c exceeds factor spec, for sure. 8c is super cold.
what have you not said, (lots) when does the AC work good, ?
works perfect at 100kmh, ? on a real road, at 40c ambient. im sure its 70% humidly there in your country, use a real weather report yours, is lacking.
Driving for 20 miles, not 1 mile, (it takes a very long time to cool off a 40C 2000 pound car.)
if the performance is lacking , when,under what conditions? (tell all conditions, pretend the web helper cant driver your car)
below 20mph, or only parked, (stopped)
when the performance lacks do you exit car and open the hood to see if the compressor is engaged>?
when performance is lacking does the front condenser fan run fast?
these facts and 100s more is why web help can not ever do you any good.
and the lack of tools.
after all you are asking for help , SECOND guessing your mechanic.
ok roof , is enclosed shaded garage.
but the air is still 40c.
the only difference parked out side, is how long it takes car to cool down,. answer can take 20miles of fast driving,
your high side pressure look low but since RPM is not 2000 , i cant really comment.
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