It's not about time. You should change the timing belt every 90k miles.
The Echo doesn't have a timing belt. It has a timing chain, and this chain will last a very long time. Toyota doesn't recommend replacing it (as a preventative or maintenance measure) unless or until you have problems.
The cam chain will last the life of the engine and need not be replaced until the engine is overhauled.
5x100 until 1992. 92 on is 5x114.3
R12. I don't think 134a can into use until around 1996.
You suppose to change it on 90000 miles. Now it's like the russion rulet you might get lucky or not.
you don't need to replace the timing chain until it becomes noisy
The Camry could have a vacuum leak. If there is a vacuum leak, then there can be a whistling sound until the vacuum system is full of air.
Drain it out until it is on the full mark of the dipstick
It is very easy to disable a Toyota Camry's car alarm. There is a toggle switch underneath the dashboard, on the left side of the steering wheel. Flip the switch while starting the car until you hear a beep. This disables the car alarm.
The Toyota Camry was introduced in 1983 as a replacement for the Corona. The initial body style was replaced in 1987 and continued until 1992 , when a more rounded, and slightly larger vehicle was introduced. The next restyling was in 2002 and changed very little until the most recent generation which began with the 2007 model introduction.
I'd push the washer button until it was empty and then refill it.
Replace it and do not drive this car again until you do.