ebbsspeed

Well, I got it fixed. When I bought this car I was told it had a bad knock, and the guy I bought it from had started to take it apart. The intercooler and a few other bits had already been removed and thrown into the back of the car. I spent about an hour putting it back together to start it. It did have a knock that was the worst I'd heard, outside of a diesel dozer starting in cold weather. Long story short, I put a brand new short block and rebuilt heads in it, and had been driving it gently for a bit to break it in. When I finally did put my foot into it, the stuff I mentioned in the original post happened. Based on lots of internet looking and some of the suggestions in this thread, I decided I'd try a new accelerator pedal assembly. I had the same issue afterwards, so started to pull parts to get at the throttle body. When I got the rubber boot between the intercooler and the throttle body pulled loose, I noticed the butterfly was partially open. I doused it with cleaner to see if that would free things up, but it looked fairly clean before I sprayed it. I pushed on the butterfly a bit and a "thing" that was jammed between the butterfly and body fell out, and the butterfly closed. I consider myself quite lucky that the "thing" which got blown into the throttle body when I put my foot into it never made it past the butterfly to an intake valve. I don't know if I somehow dropped this "thing" into the intercooler, or if it was dropped in there when the previous owner threw parts into the back of the car. I typically bag and label things as I disassemble something I am not familiar with, and this was my first experience with a DOHC turbo Subaru, so I was extra cautious in bagging and labelling everything I removed. Cleared the codes, did an idle relearn procedure, and all is well. The "thing" was a stainless steel lock washer.

Thanks General Disorder. I'll be out of town for a few days but will clean the throttle body when I return.

A month ago I put a new engine into this car, and have been driving it gently to break it in. Yesterday I decided it was time to push the pedal a little harder, and after a short burst of acceleration the car dropped to an idle and began to have a rapidly repeating idle surge. I pulled the codes, and it appears there is an issue with the "drive by wire" components, or an idle position sensor. I pulled the codes, have a P2109 and P0638. There are 2 2109 codes and 2 P0638 codes, but they seem to be duplicates. and there is no difference in the information in them other than a timestamp. Any tips on where I should begin in order to get the issue resolved? Thanks!!

I jumped the gun on this. I was cleaning out the car and found the bracket under the front seat. Is a blanket more effective than the factory shield?

I just finished putting a new engine into an Outback I purchased. It had a trashed motor in it, and the previous owner started to take it apart, then decided it was beyond his scope of abilities. I did get everything except some mounting brackets for the turbo heat shield. Is there a drawing somewhere that shows these, or might one of you folks on the forum have these from a scrapped car? Any info would be appreciated. Thanks!

Thanks for that insight. I can see where that might be the case in many instances (like pretty much any American built V8), but given the lack of symmetry of the front and rear of these particular heads, they really do have to be cast specifically for the right and left hand sides.

Thanks for the responses. What are those cutouts intended for, if some D25's have them and others don't?

I am bolting together a new engine for a 2008 Outback, and did a core swap with a Subaru shop for rebuilt heads. Not until I put the cams back into the passenger side head did I notice that there are two "half moon" cutouts in the back side of the head that were not on the original heads. What are these cutouts for (see photos}, and is there a "plug" that fits in these? If not, I'll just spin a couple of plugs out of aluminum, cut them in half and glue them in.

I have found a couple part numbers for this, and I believe the correct one is 806923030. Can anyone confirm that this is the correct number, or have an alternate number that you know is correct? It is the o-ring that fits on the transmission input shaft and slips into the torque converter. Thanks!

Pink Concrete is a pretty good description. Even getting the oil pan off was a stubborn SOB. I can't imagine how difficult it would be to split the engine cases that are glued together with this stuff.

The 2008 Outback XT engine I'm rebuilding is put together with this red sealant (see photos). I'm wondering if someone has been into this engine before, or if it is factory sealant. Pay no attention to the 1946 Cadillac Flathead motor in the background on the first photo. It's for a hot rod project I put on hold to get this Outback back on the road for my daughter.

I am in the process of getting a 2008 Outback XT back on the road, and when I pulled the engine I noticed the transmission fluid was kind of dark so I may be in the market for a replacement transmission. I have never driven this car, so don't know the current condition of the transmission. It was a $2000 gamble I took. I discovered that there were both 4 and 5 speed automatics available, and was wondering if there is a way to identify which is in this car. Can a four speed be installed in a car that originally had a 5 speed, as that seems to be the predominant AT that came in Subaru's in 2008. Are there other Subaru's that had the five speed? Thanks!

I'm replacing the short block on a 2008 Outback XT (E255 Turbocharged engine) and am wondering what the function of this part is. It appears to be an air pump of sorts, and I assume it is part of the emissions control. Can someone confirm what it is, and whether or not it can be deleted? If deleted, will it generate codes? This is the newest, most complicated Subaru I've worked on to date, so I'm taking a lot pf pictures and laying out parts in order of removal. Thanks!

I'm looking at a 2008 Outback XT (DOHC, turbocharged) that has a real bad rod knock, and have available an SOHC from a 2009 Forester. Are these blocks the same, and is it possible to move all of the DOHC parts from one to the other? Thanks!