You have do it each 80K miles.
Before it breaks
Four cylinder has a chain. Replace it when it breaks or has so much slack in it that it jumps timing. Replace the guides at the same time. They have wear limits.
Toyota recommends every 90K.
The 2.4 liter four cylinder engine in a 2009 Toyota Camry has a timing CHAIN
If it had a timing belt, you would replace it at 90,000 miles. But this engine has a timing chain and does not have a belt.
It has a timing belt. I was told to replace mine at 90,000 miles, so I did.
The 2.4 liter four cylinder engine in a 2004 Toyota Camry has a timing CHAIN so there is no timing belt to change as a maintenance item
Yes
The 2.4 liter four cylinder in a 2004 Toyota Camry has a timing CHAIN
The Gates website ( they make timing belts etcetera ) shows for the 2.2 liter four cylinder engine in a 1997 Toyota Camry : ( they recommend changing the timing belt at 60,000 miles severe )
toyota recommends that timing belts be replaced at 60,000; however, 100,000 miles is fine. Replace at 100,000 miles as preventative maintenance. 4 cylinder 2002 Camry has a timing chain which does not have to be replaced.
The 2.7 liter four cylinder engine in a 2007 Toyota Tacoma has a timing CHAIN