Thanks again. But I seem to have a catch 22.
Unfortunately the dealer is 10 miles away and I cannot drive my Camry because once it heats up it stalls at every stop light. I was told you can pull (disconnect) the vacuum hose to the EGR valve and if the problem goes away then the EGR valve is the problem.
I cannot locate either the EGR valve or the vacuum hose. I was told it is at the rear of the throttle body, but I have no idea what a throttle body looks like.