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Old 01-23-2013, 11:50 PM   #1
gotboost2jz
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Default 2006 2.5i

Been looking for 06-07 2.5i's for a while now. I mostly find them in silver or with an automatic. I found one in red that I really like. Issue I have is that it has 135k on the odometer. I was hoping to stay at or under 100k. So as I go to look at this car what are the known issues with these models? I'm looking for model specific issues, not the normal car buying tips. For example, my current Nissan Frontier is known for having a serious radiator issues where it cracks and leaks into the tranny cooler causing trans failure. You would never know this by looking unless you were already informed ahead of time about the issue. I'm looking for anything like this.
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Old 01-24-2013, 12:26 AM   #2
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timing belt should be done every 80,000 or so with new idler pulleys and tensioners, preferably water pump too. head gaskets failures are not uncommon, so if it hasnt been done in the last 50k miles it may be something you will have to deal with. sometimes the center diff viscous coupling can fail and cause jerky/binding during slow, sharp turns like parking lot driving, etc. this is usually the result of driving on mismatched tires/wheels, being towed incorrectly or persistant agressive driving on low friction surfaces like doing continuous donuts in the snow
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Old 01-24-2013, 12:40 AM   #3
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Quote:
Originally Posted by RaceFaceXC View Post
head gaskets failures are not uncommon, so if it hasnt been done in the last 50k miles it may be something you will have to deal with
If what hasn't been done in 50k miles?
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Old 01-24-2013, 01:01 AM   #4
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The head gaskets.
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Old 01-24-2013, 09:32 AM   #5
gotboost2jz
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Head gasket replacement is considered normal maintenance on Subarus...? Do you mean valve cover gasket? Head gasket is kind of a major thing. Not arguing with you, but I can't imagine Subarus having such good quality records if engine tear down is considered the norm over 100k
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Old 01-24-2013, 01:22 PM   #6
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Quote:
Originally Posted by gotboost2jz View Post
Head gasket replacement is considered normal maintenance on Subarus...? Do you mean valve cover gasket? Head gasket is kind of a major thing. Not arguing with you, but I can't imagine Subarus having such good quality records if engine tear down is considered the norm over 100k
You said you were looking at a 135k mile vehicle. The head gaskets usually go between 75k - 125k miles. So if they hadn't been done in the last 50k miles, it's not an unlikely possibility that you will have to do them soon. Head gaskets are a problem for n/a ej25 motors. By problem I mean it happens far more often than other manufacturers.

Valve cover gaskets/seals are not uncommon to leak either but the parts are cheap and the job is cake.

Last edited by RaceFaceXC; 01-24-2013 at 01:31 PM.
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Old 01-24-2013, 01:32 PM   #7
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Quote:
Originally Posted by RaceFaceXC View Post

You said you were looking at a 135k mile vehicle. The head gaskets usually go between 75k - 125k miles. So if they hadn't been done in the last 50k miles, it's not an unlikely possibility that you will have to do them soon. Head gaskets are a problem for n/a ej25 motors. By problem I mean it happens far more often than other manufacturers.

Valve cover gaskets/seals are not uncommon to leak either but the party's are cheap and the job is cake.
Cake? You have to pull the engine to change the head gasket. Correct me if I'm wrong, but I don't know if that'd be "cake."
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Old 01-24-2013, 01:52 PM   #8
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Wtf is wrong with people's reading comprehension today?

I said the valve cover gasket and seals are cake
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Old 01-24-2013, 02:59 PM   #9
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I have a 06 2.5i wagon manual with 121k miles and was purchased with 84K. Only Issues I had were Head gaskets at 105K and cracked spark plug wires which caused miss fires after a hard rain storm. Engine burns about a 1/2 quart of Sythblend every 1.5K. So keeping an eye on your levels is a must. I do changes every 2.5K to be safe. I also drive a 06 2.5i auto at work which also had leaking gaskets at 90k. The Auto has some minor transmission problems but the car is a beater for deliveries and has 4 different drivers over a week period so the wear and tear on the trans. i think is normal.

High Milage on NA Subarus isnt a bad thing because after the 120k mark the car should be all tuned up and the engine is well broken in while other Makes engines performance at that age start to dwindle. This is why people consider Subarus to have great engines. If the car has been getting timely maintenance (timing belt etc. and already gotten Head gaskets done) it should be a solid car! If gaskets have not been done have it looked at and try to bring down the price to make up for a future leak.

My 2.5i manual runs great, real strong car. My advice would be to be patient and wait for the manual 06 2.5i to show up (they are rare though because everyone keeps them). With the auto you can't really feel any of the cars torque unless OD kicks in and the transmission can get confused and hesitate. With the Manual you have all the power on the tips of your toes making 1k-3k rpm driving very fun because your butt dyno really feels the low end torque with the manual. Its not a fast car, but it sure is quick.
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Old 01-24-2013, 05:47 PM   #10
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I thought that the 06+ models were a bit harder to take off the valve covers, either unbolting the engine mounts and jacking it up a little or just taking the engine out was the only way to get the valve covers completely off.
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Old 01-24-2013, 06:35 PM   #11
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Quote:
Originally Posted by RaceFaceXC View Post
Wtf is wrong with people's reading comprehension today?

I said the valve cover gasket and seals are cake
Ok so there was a slight misunderstanding. Take a chill, guy.
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Old 01-24-2013, 07:47 PM   #12
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Quote:
Originally Posted by gotboost2jz View Post
Been looking for 06-07 2.5i's for a while now. I mostly find them in silver or with an automatic. I found one in red that I really like. Issue I have is that it has 135k on the odometer. I was hoping to stay at or under 100k. So as I go to look at this car what are the known issues with these models? I'm looking for model specific issues, not the normal car buying tips. For example, my current Nissan Frontier is known for having a serious radiator issues where it cracks and leaks into the tranny cooler causing trans failure. You would never know this by looking unless you were already informed ahead of time about the issue. I'm looking for anything like this.
There's one in the Tri state (FS)classifieds.PM the guy to find out about problems, issues.I'm sure he will be of help.

Last edited by blue sedan; 01-24-2013 at 08:29 PM.
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Old 01-24-2013, 08:03 PM   #13
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Whoa, I had no idea Subarus had such faulty head gaskets. How much of a fix is that cost wise? A HG on any other car is a pretty major (expensive) fix. I'm used to Nissans, Fords, and Toyotas. I've never had to change a head gasket once for repair reasons. Only time I've ever changed a HG was on my 1JZ but that was because I was completely rebuilding the engine before swapping it into my S14.

As for auto vs. manual I'm not looking an autos at all. The one I'm looking at is a 5 speed.

Is the head gasket issue the same on WRX's?
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Old 01-24-2013, 08:38 PM   #14
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I just bought an '07 2.5i yesterday. It is funny to read this thread as all the things posted have been done to my car, except the center coupling. Something to look forward to I guess! lol
I imagine with 150k miles, I'll need to be looking into doing some of these things again.
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Old 01-24-2013, 08:45 PM   #15
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My friend had his head gasket done at the dealer there other day, it was close to $1600.

As for the wrx/sti's I don't think the problem with head gaskets is really there. I do know the sti's use thicker head gaskets and that some people use them on their 2.5i's as the replacement
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Old 01-24-2013, 08:47 PM   #16
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Quote:
Originally Posted by alt14 View Post
My friend had his head gasket done at the dealer there other day, it was close to $1600.

As for the wrx/sti's I don't think the problem with head gaskets is really there. I do know the sti's use thicker head gaskets and that some people use them on their 2.5i's as the replacement
Wow where'd he get his HG done for $1600? Do you know if anything else was done while they were at it?
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Old 01-24-2013, 08:53 PM   #17
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At the dealer, nothing else, they take the engine out to replace them.
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Old 01-24-2013, 08:54 PM   #18
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Quote:
Originally Posted by alt14 View Post
As for the wrx/sti's I don't think the problem with head gaskets is really there.
Can anyone confirm this? Not looking at STi's but I am looking at some 2004 WRX's
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Old 01-24-2013, 08:57 PM   #19
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Originally Posted by alt14 View Post
At the dealer, nothing else, they take the engine out to replace them.
But of course. My HG is definitely leaking and I'm dreading the day I'll have to get it replaced. AT quoted me $2k, but I think they were going to replace rear seals at the same time.
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Old 01-24-2013, 09:01 PM   #20
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I really don't have much of an idea what causes the problem in the n/a vs the turbo, I've heard that even corroded battery terminals can cause failures (I know it sounds ridiculous)

http://allwheeldriveauto.com/subaru-...ained-part-ii/

Long article but also explains about how even battery corrosion can cause a failure, a lot of other good information from allwheeldriveauto also like piston slap explained

Last edited by alt14; 01-25-2013 at 12:27 AM.
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Old 01-25-2013, 01:57 PM   #21
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I purchased my 2006 5 spd in March, 2010 with 47k miles from a private party sale. I have beeen lucky in that I have not had any problems with mine and have only had to perform regular maintenance to it. It now has 70k miles on the odometer.
If I had known what I have now learned prior to buying my Impreza, I would have spent more time checking the following things before buying it (although thankfully mine did not have any of these issues)

1. Pull the spark plug wires and check for oil pooling in the holes.
2. Check the seam on the top of the radiator for signs of leaks.
3. Check for oil seeping at the head gaskets
4. Check the tire pressure and if there is even wear on all 4 tires
5. Listen to the engine for excessive ticking or piston slap
5. After a long test drive(about 20 mins), go to a parking lot and drive in slow circles in both directions in 1st gear as well as in reverse. Check for any binding, clicking or other odd noises from the drivetrain to rule out a bad center diff or other drivetrain issues.

Of course, check any other generic stuff like the level and contamination of coolant, engine oil, transmission oil.
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Old 01-25-2013, 02:53 PM   #22
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Awesome list of things to check. I'll be sure to use that. Thank you!
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Old 01-25-2013, 03:37 PM   #23
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1. http://www.wvx34.service-campaign.com/ Find out if this was done.

2. There was a reflash for the ECU to deal with cold start idle, and another to deal with cruise control. Find out if these were done.

3. On start up, when the engine is cold, listen for a ticking sound coming from the engine (JohnM10's first 5th point). The dealership told me it was normal and it shouldn't be an issue for 06/07 imprezas. If you hear the sound, decide whether you can live with it.

4. Throttle response:

a) the car is somewhat unresponsive to sudden throttle inputs (feels like a short lag). I never found a thread showing how to fix this.

b) There is 0 response from the car between 0% and 1% requested torque during acceleration (but not deceleration); this can cause a bit of a popping motion when trying to maintain constant speeds with very little throttle input. This can't be fixed or dialed out. Decide if you can live with this.

c) the car is designed to apply power in an exponential manner; at 60% accelerator angle, you get 100% requested torque; everything after 60%, you get nothing. This CAN be fixed if you're willing to learn. Find the thread on DBW (drive by wire / throttle by wire) by Williaty

d) the car seems to delay engine response during heal and toe braking. It can be disconcerting when you're expecting compression and it doesn't come for a second or two. I never found a way to fix or dial it out. Decide if you can live with this.

5. Defog mode (HVAC) is tied to the AC.
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Old 01-25-2013, 04:00 PM   #24
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Once again a great post. Thank you all for the input
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Old 01-25-2013, 04:18 PM   #25
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100k is a major milestone for these cars. Your wallet will become anorexic, but after you're in for a smooth ride. All the belts and idler pulleys and tensioners are a must (they risk grenading in the 100k-200k interval), HGs with head resurfacing will run you in between 1-2k$...and while you're at it, might as well change the cluch if it's a MT (the clutch is exposed as the engine is pulled). In 125k miles on my 03 I had no "repairs" asides from HGs, valve cover gaskets, and rear struts.
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