found this earlier and thought i'd post in case it might help someone.........

For those searching on this problem as I did...

Cold starting was hard; didn't even have to
be that cold. Backfiring and poor drivability
until warm, then OK.


No check engine light.


Based on previous suggestions, I replaced the
coolant temperature sensor. That completely
fixed it. Good thing, too, I'm not sure what I
would have tried next.


BTW, getting to the thing is a b*tch. I once
did it on my '95 impreza and couldn't remember just
how. This article was most
helpful! Step by step photos.


Index of /SubaruDocs
CoolantTempSensor.html


Those hoses didn't just slip off, however!


Bill Hale Loveland CO