EGR valve - very common in these cars.
Cam seal.
This car was designed by some very smart people. The car is just great. Very very very reliable.
The transmission jerk is my only complaint, but these transmissions run an easy 300,000 if well taken care of.
I plan to get at least 400,000 miles out of this car before any engine or transmission is rebuilt.
What were the symptoms of your EGR Valve going bad? I own a 1991 Honda Lx Wagon with 227k miles.