Hi, I have a 2001 Toyota Echo, driving back from vacation in NH the car developed a clattering noise, I could not find the source of the noise so I took it too our local Toyota dealership & was told it was the a/c clutch assembly. Can you tell me if this is a part I can change myself ? If so your help would be greatly appreciated. I live in Kitchener Ontario Canada.
Best regards
Mike

kitch428 is our Toyota specialist and he can tell you exactly what's involved. Often, you need to compare the time and material costs associated with repairing the old compressor versus installing a new compressor/clutch assembly. Most compressors are ready to be replaced around 100,000 miles.

Several months ago, the rotor pulley bearing on my 2000 Ford Taurus needed replacing (103,000 miles). The effort involved was about the same as installing a new compressor. Therefore, I installed a new compressor/clutch assembly and accumulator ($300). Now, I should be ready for another 100,000 miles or so. For perspective, here's what was involved:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-9.html#post1722090

If you decide to install a new compressor/clutch assembly, or evaluate your current system, this writeup may help:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-9.html#post1864159

I have a 2001 Toyota Echo which has been leaking water on my passenger side floor board. I've been told twice that its my a/c drain hose. They clear the hose and it seems to alleviate the problem for a short time but the problem came back for a second time. I find it hard to believe that the problem is a drain hose. Can you help ?

You must have a lot of debris in the evaporator case. If you have the vehicle raised, then you can make a small wire hook and snake the drain from the bottom to pull out the big pieces.
We are having this problem with the Yaris's currently and this technique seems to work for me.
A good stout blast of compressed air finishes up the job. Sometimes, several quarts of water comes out!