98 Subaru Manual Transmission. I had a 2.2 liter dropped in it. So I've seen this happen for the third time, happened today and it's always happened when approaching a steep hill, I need to down shift to fourth and power up this incline when not immediately but eventually the check engine light starts to flash. Ease off pedal to slow down and in 30 seconds to a minute it goes away. This is the only situation it happens in and third time I've seen it now. Not being driven at the moment having the transmission checked out, I know at least one bearing will be replaced since you can hear it. any insight would help, thanks.