I do already have quite a number of things already done from the AC improvement threads:
1) Footwell Plates Removed
2) Front intake vents sealed up with tape
3) All windows fully tinted with premium solar film
4) Heater bypass done (I totally bypassed it from the engine bay, the heated water don't even get to flow alongside the doorsills to reach the front of the car)
5) Doorsill exposed panels insulated
6) Evaporator probe re-positioned (not the newer digital thermostat)
1) Start the car in 26-28 Degrees Celsius: A/C gets really cold fast as long as car moves briskly. If car don't move, the coldness comes fast but tapers off in a matter of 10 minutes or so.
2) Start the car in 29-34 Degrees Celsius: A/C gets acceptably cold in a slightly longer time as long as car moves briskly. If car don't move, the coldness comes on (more like cool, not cold) and tapers off in a matter 5 minutes or so.
3) On highway driving at 90-120kmh, the A/C remains moderately cool at best whatever the ambient temperature is. If weather gets hot, the AC's effectiveness lowers accordingly, but is still much more bearable then when car is stationary or moving in start-stop traffic.
4) Even when I shut OFF the A/C when driving, there would be a steady stream of warm air flowing through the AC vents. This warm air stream will typically start to flow after 10-12 minutes of car moving off from rest.
5) I don't think the evaporator freezing is a problem.
So my Deductions:
1) Somewhere along the entire AC ducting, there must be a leak since warm air continues to stream in even when AC fans are OFF.
This means at all times, cold air is actually mixing with warm air.....this is disastrous.
2) Radiator/Condenser Fans are too weak to accomodate times when vehicle is stationary or in start/stop traffic. So AC coolness is affected much on such occasions.
3) Heat Soak is drastic in the front under-clam area so once again the fans are not strong enough and insulation needs to be better.
And what I think I should do:
1) Remove Front Clam
2) Full-on no holds barred insulation of all factory A/C pipings, ducting, intakes, casing, etc to isolate the entire A/C system from heat as much as possible.
3) Get better radiator/condenser fans
4) While at it, might as well install the newer digital thermostat for the evaporator
Or Any better suggestions?
Like....change car, maybe
Are the newer post'08 cars like better insulated or something.....just pondering...