Hello, i am from Germany.
I have a little problem with my pre-facelift my96 impreza turbo. all standard,, no tuning,
about 177000 miles.
If i cruise, not full throttle, sometimes my check engine light goes on.
When the light is on, the car has less power and blocks a bit if i go full throttle.
When the Check Engine Light is out, all is fine.
I have replaced the Oxygen Sensor behind the turbo in the downpipe.
Problem is still there

What should i do know??

Sorry for my very bad english

Thanks for help

 

not 100% but you might have 2 sensors on your exhaust

 

mmhh, its an my96 classic, and i think these models have only one oxygen sensor?

 

are you getting code 32 i am only asking because mine did same recently and i got code 22 knock sensor with same probs you describe

 

Yes really 32