Sign In Join 



2009 Subaru Forester

3630 messages,  Last post on Nov 06, 2009 at 12:19 PM

You are in the Subaru Forester Forum. Your Host is kcram

What is this discussion about? Subaru Forester, Future Vehicle, Wagon


Messages Page 343 of 364
1
...
340
341
342
343
344
345
346
...
364
Prev
Next
Last
Go To Msg #
Search This Discussion

#3413 of 3630
Re: CVT belt drive [kurtamaxxxguy] by saedave
Jul 03, 2009 (10:00 am)
Reply

Replying to: kurtamaxxxguy (Jul 02, 2009 9:00 pm)

That change in cooling was one reason the H-6 became able to use regular grade gasoline.
....and yeah, they'll have to redesign the H-4 engine block for that, which is a big expense

 
I know they bored and stroked the 3.0 block and employed the odd assembly procedure for pistons and rods, but was not aware of new coolant passages other than in the head which they discussed publically. Are you sure the block got that change?
 
Even with direct injection and CVT the fleet average fuel consumption might still be too high to keep the six unless they successfully introduce a small high mpg model. Perhaps the Toybaru roadster would help.
#3414 of 3630
Re: CVT belt drive [saedave] by kurtamaxxxguy
Jul 03, 2009 (11:04 am)
Reply

Replying to: saedave (Jul 03, 2009 10:00 am)

I remember seeing an extensive presentation where the H-6 cooling revisions were discussed. The older 3.0 used series cooling so that the cylinders at the end of the circuit ran hotter, encouraging detonation and was one reason Premium fuel was needed. Parallel cooling used in the 3.6 got rid of that problem.
 
However, I don't remember whether the block and head, or just the head, were changed to allow parallel coolant flow.
 
The XT's turbo engine still uses series cooling, and one cylinder (#3 or #4, I forget which) runs hotter than others and has the knock sensor for that reason.
#3415 of 3630
Re: CVT belt drive [kurtamaxxxguy] by saedave
Jul 03, 2009 (11:18 am)
Reply

Replying to: kurtamaxxxguy (Jul 03, 2009 11:04 am)

Though the cooling problem was solved, mpg for that engine in the real world is poorer than for the turbo by 2 mpg average per Consumer Reports testing.
 
While I personally chose the 3.0 over the turbo in 2005 because of excessive turbo lag, with a rumored 8.0 sec 0-60 for the CVT 4 I would choose the normally aspirated four today. That 8 second rumor may be incorrect, however.
#3416 of 3630
turbo notes by kurtamaxxxguy
Jul 03, 2009 (11:57 am)
Reply
The '09 Forester got a different turbo, intercooler, head and intake manifold that reduced turbo lag and brought usable torque down by around 800 RPM. As far as I know the '10 Forester has the same system.
 
Some testers comment the '09 Forester power delivery seems patchy. Local speed shops in Portland ran dyno tests and claimed the '09's tested frequently went into detonation detection mode and reduced power. The explaination was Subaru engines were originally designed for 98 Octane gas, and through detuning have encountered some problems. A "rechipping" supposedly fixes the problem, but will void the engine warranty.
 
The '09 WRX got a larger turbo, new catalyst and exhaust system that improved horsepower, but moved the torque peak farther up the curve so the WRX now has the "turbo rush" either loved or hated by enthusiasts.
 
The '10 Legacy got a revised turbo system that further reduced turbo lag, mostly by moving the turbo closer to the exhaust manfold and shortening some of the duct work.
#3417 of 3630
Re: turbo notes [kurtamaxxxguy] by saedave
Jul 03, 2009 (12:22 pm)
Reply

Replying to: kurtamaxxxguy (Jul 03, 2009 11:57 am)

The '10 Legacy got a revised turbo system that further reduced turbo lag, mostly by moving the turbo closer to the exhaust manfold and shortening some of the duct work.
 
But the Outback lost the turbo option in favor of the 3.6l. Perhaps just one too many models to certify? Or is there some other good reason?
 
With the low mounted turbo already in use on the Legacy, the turbo diesel might actually be introduced here. It certainly would help CAFE.
#3418 of 3630
Re: turbo notes [saedave] by kurtamaxxxguy
Jul 03, 2009 (1:37 pm)
Reply

Replying to: saedave (Jul 03, 2009 12:22 pm)

My understanding is Subaru felt only a sedan represents a full-on drivers car, which is why the Outback, more slanted towards utility, lost its turbo option.
 
Also, perhaps Subaru did not sell all that many Outback XT's to warrant keeping that version alive? They did cancel the Manual transmission Forester XT because no one was buying it (immediately raising howls from the auto journalists).
#3419 of 3630
Re: 2010 Forester brochure now online [oregonboy] by confused25
Jul 12, 2009 (2:21 pm)
Reply

Replying to: oregonboy (Jun 05, 2009 8:24 am)

The black tag is to signify that there is a side airbag.
#3420 of 3630
Re: Acceleration--is this normal? [billwv] by confused25
Jul 12, 2009 (2:35 pm)
Reply

Replying to: billwv (Jun 13, 2009 8:59 am)

Bill,
 
I just took delivery of my new 2010 Subaru Forester X Premium. I think that I am experiencing the same thing as you: when starting in the morning the engine first tries to rev at 750 rpm and it sputter and almost stalls, then the rpm kicks up to 1,000 and it does the same thing, then 1,250 ditto and at 1,500 it momentarily sputters and then revs smoothly. This has happened since purchasing. I brought the vehicle to the dealer to check. What they tell me is that this will happen during the break in period (500-1,000 miles) as the engine's computer is adjusting. The surging rpm's is normal duringthe break in period. Apparently the engine is trying to start while minimizing emissions (vehicle is listed a partial zero emission vehicle). The check engine light did not come on. I'm currently at roughly 330 miles. Let me know if your problem has been resolved and I'll let you know the same. How many miles do you have on the vehicle?
 
As for the transmission shifting, even if you hold the gas pedal at the same position the vehicle may downshift on a upgrade. That is normal, I've experienced this with other vehicles.
#3421 of 3630
Re: 2009 Forester reliability in CR- why just average? [bikerguy3] by confused25
Jul 12, 2009 (3:24 pm)
Reply

Replying to: bikerguy3 (Jun 30, 2009 10:56 am)

How did you fix the rattle from inside the door? What was cuasing the rattle?
#3422 of 3630
Re: 2009 Forester reliability in CR- why just average? [maybesubie1] by confused25
Jul 12, 2009 (3:41 pm)
Reply

Replying to: maybesubie1 (Jun 30, 2009 5:14 pm)

I just took delivery of a 2010 Forester X Premium with All-Weather Package and Automatic Transmission. Within the first week of ownership I brought the vehicle back in for 4 warranty items. Hopefully this information is useful to you. All said, the dealer and Subaru has been responsive and these items are minor (to me).
 
1. During morning starts the engine would run rough for the first minute. The engine would try to rev at 750 rpm, sputter and almost stall. Then the rpm's would kick up to 1,000 and do the same. Then go up to 1,250 and do the same. Then finally go to 1,500 rpm sputter and then settle in. The same thing has happened every morning. The check engine light never came on. The dealer indicates that this is normal during the break-in period and will go away. This has to do with the emissions computer and the PZEV (partial zero emission vehicle). I'll probably send an email to Subaru of America to see how they respond (they have been very responsive to all my questions while I was considering this vehicle).
 
2. The security etching on the windows (I did not ask for this but it was done anyway) had acid over spray that scarred the window. The dealer is replacing the window.
 
3. A small buzzing/rattle in the dashboard/door on the passenger side. Dealer found a couple of body clips that were not fully engaged and set them back in place. This seemed to work but the buzz/rattle is back. So I'll ask the dealer to look at this again when the window is replaced.
 
4. The rear rattles from the cargo floor panels, under floor tray and jack. I've checked to make sure that the spare tire was secure and that was not the issue. However, I've noticed the noise is less prominent as the suspension is starting to wear in a little. I plan to fix this myself with some foam/padding. I'm sure that a cargo tray would eliminate the cargo floor panel noise by keeping them down.

Messages Page 343 of 364
1
...
340
341
342
343
344
345
346
...
364
Prev
Next
Last
Go To Msg #
Search This Discussion
To POST a message, please Sign In.

New? Join Now!

Forum Tools

Please sign in.
Email Address:

Password:

Forgot Password?

Search Forums

Enter Keyword(s)

Advanced Search

Browse by Vehicle



View All Vehicles
Advertisement
Ask the Community
See What People Are Asking

Browse by Board

Browse by Topic


View All Topics

Today's Chats

Advertisement