The car has 90,000 miles on it. I left out that it does have a new
fuel pump and fuel filter and the injectors have been cleaned. The
problem was occurring before the above work. The fuel pump died, and I
was hoping that the above work would solve the idle problem as well.
As for driving conditions, the majority of the miles are highway miles.
I live in Raleigh,NC, so not a lot of dusty or snowy driving. The
winters here are pretty mild and the summers are hot and humid. As for
the question about the codes, I am not sure. I have not taken it in to
the shop yet. I have spent $2700 (also had to have the transmission
rebuilt in addition to the stuff above) on repairs for this car the
last 3-4 weeks, so I was hoping to be able to fix this problem myself
and sell the car before something else goes wrong on it. This car has
been a real lemon. The first tranny was rebuilt at 46K and the second
time at 88K. I have never had a car with this many problems!