My wife has been complaining about a recurring problem with the transmission of her 2000 Honda CRV. The car is an automatic with front wheel drive only. On days when the car sits outside of her office all day at work, she reports that on the drive home when accelerating to highway speed the transmission seems to not shift into high gear/overdrive. This problem occurs most frequently (though not always) on cooler days. When acting up, the engine will rev at about 3300-3500RPM at about 60MPH, instead of the usual 2600 or so RPM. Also, when displaying the problem switching the O/D switch on and off (normally just left on) in the shifter stalk has no effect. After about 8-10 miles at 60MPH and 3300-3500RPM, the transmission will shift up and behave normally for the remainder of the drive.
So far, we've had the transmission flushed/fluid changed. We've also replaced the transmission's "linear solenoid" as well as the A/B shift solenoid switch. None of these have solved the problem. The car has about 105K miles, and has been very well cared for and is in overall excellent condition. But now we've got a problem we can't seem to fix, and I would have a problem even selling the car in good conscience. All I hear is that these cars very rarely have transmission problems. So, this is disappointing to say the least. Anyone have experience with this and/or thoughts on what might be wrong? I'm starting to think either a sensor or PCM problem.