A similar scenario happened with my 2001 Camry. A JUNE BUG got stuck in the drain hose in the section that is below the floor of the vehicle. And over time, I guess, some more debris accumulated and completely blocked off the flow. Once cleaned out, the AC functioned just fine... Sometimes it is the most SIMPLE of things...
Good find! Looking back it should be a common issue. When my home AC stops working, I would put vinegar in the water condensation tube, go outside a few hours later and suck out all the water and waste with my wet/dry suction. AC works again!
Use a better filter, if drain is cligged the say the dirt is getting thru the filter and getting onto the coils and when coils condensate it washes the dirt into the drain therefore clogging the ptrap
Another cheap fix is to spray a/c coil cleaner foam over the condensor in front of the radiator. A $6 bottle from Home Depot brought my temps down a few degrees more. A cleaner condensor = better airflow = better cooling.
Perhaps thats the answer to my ac not getting as cold as it should be. I plan to check mine. I may attck it different though. Like, go up from the bottom where it comes out and run a plastic drain cleaner tool through it. You know the kind you use for bath sinks. It's flexible. It may not work but worth a try. There has to be something i can 'back run' it with. Come to think about it i have not seen a water puddle under it this year, hummm?. This problem you found the answer for, needs to be posted in the Toyota forums. I would like to of seen the opening underneath the vehicle but I'll find it anyway.
Just went out and Pulled off that hose and run air through it. It's clean. No excessive water came out, so it working. The Cabin air filter was clogged up bad and thats what caused the lack of A/C coming through. Plus dinner napkins overflowed the Glove box and where stacked up against the air intake! That was the main problem.... So now life is good. It reads out at 50 degrees at the vent. Normal Temp.
@@bobr2959 hey that's great you found the problem. Yes I did post this in SiennaChat; didn't get much response. www.siennachat.com/threads/sienna-ac-trouble-shooting.76051/#post-468574
BTW, I tried different things to clear the line from under the car. Wire, plastic weed whacker lines, etc. Nothing worked because the hose bends in multiple places.
I did try. I used my scan tool to activate the compressor magnetic clutch. It would stay on for a second, then turn off. No explanation why. My car mechanic friend who was helping me said it's probably the compressor. In the end, I suspect it was the high pressure switch that was bad, and I should have checked that first before I went into the shop. There are three wires into the sensor and if I jumped the wrong pair, I could have blown out the AC computer. Then after spending all the dough, I found another video where you just put a continuity meter on the sensor itself and that would have given the answer. Well, that's why you here are reading this right?
