Expansion Valve?

[fastballbaker]

Question for the pros? My toyota sienna van does not cool as good as it should. Compressor is good, ***** level is great but just not cooling very well. Had somone tell me the expansion valve could be bad. Is this a possibility and what does the expansion valve do? What would happen if the expansion valve was not working right?
Thanks

[chemi-cool]

Have you tried cleaning the evaporator filter? Wash the condenser?

[a/c.king]

Hi mate

I’ll list for you some off problems that cause Toyotas air con system to be inefficient

1- Receiver dryer

a- partially blocked

b- the inside core is lapsed and sent debris to the TXvalve causing inadequate refrigerant flow

2-TX valve not working properly

3- Condenser fans not good enough

4- Heating cooling air damper not fully shutting making the cooling airmixing with heating air

Check and let me know how did u go

Regards

a/cking

[Magoo]

Hi Fast ball.
try selecting re-circulating air option so you cool your vehicle and not the USA. Saves alot of fuel as well.

[fastballbaker]

What is a TX valve?

[stufus]

TX =Thermostatic expansion valve
Check the pollen filter if you have one
Cheers
Stu

[charlie patt]

put on recirc does it sound diferent/ it may be on but if flaps not working you get poor efficientcy// is the suction line sweating is it better in morning when cold then say ten mins into a trip/ can you hear a boiling/dripping noise when ac is on.... in the uk our model has a orifice not a tev/x but the states may be different