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#18139 of 19336 Re: Engine ping in 2008 Impreza 2.5i AT (non turbo) [oldladydriver]
Jun 16, 2009 (9:49 am)
Okay....non-turbo. AKA as non-trouble. Does not help in the knocking/pinging department.
I wonder if there are any tech service bullentins about this problem from Subaru. I would be looking directly at the knock sensor and related computer circuits involved. Also, the service tech needs to take a ride with you driving the car so you can recreate the problem for him since he can not make it happen. That would be my next recommendation.
Jun 16, 2009 (10:04 am)
You are correct that I am new to the Subaru forum. Not new to automobiles or Subaru's though. 40+ years. WIX is an excellent oil filter brand. They even make the NAPA filters. I have seen them cut open, we have watched results of engine tear downs for many different filter brands and this is one of the good ones.....I guess as long as they don't come China?!?!
Remember when it comes to that misfire code, that valve or whatever only has to screw up once in a blue moon during a 100 miles before that computer picks up the change in rpm drop then throws that stupid code. I hope that to be the case, then you could very well get away with changing the oil brand and oil filter over a little time. Don't forget the old Marvel Mystery oil. Hold off on that thought though until you see what Lucas does. I have pulled Marvel out a few times in the past before doing a tear down. It has bailed me out as well when I least expected it. Sure beats a tear down any day.
Will try to review your message history. You have one of the fun codes to resolve.
Jun 16, 2009 (11:12 am)
I am still reading your posts and have a couple thoughts to go on now. First, clarify the year, model and mileage you currently have on the vehicle. How much of the mileage is city versus highway.
Now, looking at your compression readings.... there may be your misfire answer. 1-220, 2-235, 3-195, 4-220. I have re-arranged, assuming firing order 1-3-2-4. Everyone else, pay attention here. One of the things I hate about OBD II! Old days, I would have no problems with this engine, but OBD II does and so does Uncle Sam. Here is why. Re-arrange to 1-200, 3-195, 2-235, 4-220. Here is most likely the cause for misfire code on this engine: look closely at the readings. You will see two lower reading cylinders followed by two higher readings. Those two higher reading cylinders will produce more power than the two lower reading cylinders which will eventually be picked up by the computer as a misfire code on 1 and/or 3 because those are the lower compression/lesser power output cylinders. Add any other small variable on an occasional basis from poor re machining work from valve job, you are screwed with a code.
There goes the sticking valve hope.....your previous posts shot that thought down somewhat. Okay.... patience is cheaper than replacing the car. Time and observance may pay off in the long run still. It has served well in the past on high mileage units around here. So let's use that tool. Wes, seems to know it well also. I see you have dealt with cats, O2's and antifreeze. What about oil loss. Is any burning? The higher mileage Subs here, 240K seem to leak it out the back end from the oil gallery cover, and 'O" rings. I still replace crank shaft seals and clutches while back there also. Even with synthetic oil, they are very tight on next to no oil usage. I hope the same for yours
If Lucas improves things, oil loss is next to nil, I would consider a synthetic oil with no additives and hopefully that will take of any strange variables out there adding to the unbalanced compression readings and reduce that misfire code problem.
Intake Manifold gaskets....little late to mention it, but were the surfaces flat and square checked by a machinist. Takes very little to cause an air leak and a misfire code there as well. But that would not be an occasional thing. Keep that thought under your hat.
Time to let this stuff churn in the old brain for a while and read some more of your posts later.
#18142 of 19336 Tribeca transmission question
Jun 16, 2009 (11:51 am)
I have a 2006 Tribeca. While driving at about 70 MPH yesterday, my front seat passenger (who has some significant dementia) grabbed the shift lever. Fortunately he only pushed it to the left side, putting the transmission into Sport mode, so nothing bad happened. My question is, what if he had managed to push the lever forward? Would some sort of damage occur?
#18143 of 19336 Re: Tribeca transmission question [robotb9]
Jun 16, 2009 (2:00 pm)
Transmission would be the least of my concerns. Overall safety of the vehicle becomes the issue. He could have caused a complete lack of control resulting in a deadly accident. Back seat for him from now on.
Now for the transmission. This particular car I know little about, but in general it is not a very good idea to shift any transmission while it is under a full load. Even in an auto, I back off the load before I force a downshift on an auto. Yes, I know it has clutches inside it. But those do not work like most people think they do! They work completely opposite of a manual setup. Bottom line is you are forcing parts to change position while under a load and that can get nasty at times especially if you decide to put it in "R" for Race as the old joke goes then wondering why it blew all apart.
Again, for safety sake, that person needs to be in the back seat!
#18144 of 19336 Re: Tribeca transmission question [girlcarbuilder]
Jun 16, 2009 (2:43 pm)
Agreed, that passenger will not ride again in the front seat. That's not under discussion. I understand the safety issue.
I am hoping for an answer to the question about the transmission itself: what sort of damage could have occurred?
#18145 of 19336 Re: Word to the Wise-SOA- LIARS & CHEATS [girlcarbuilder]
Jun 16, 2009 (5:46 pm)
Good guess, girlcarbuilder,
I did find both A/C charging valves were bad, (an engineer friend found these with less than a 5 minute glance under the hood). One of these is located right near the air intake for the cabin. This was after the heater box was replaced and I was still having problems. Several people/mechanics have suggested that there is a coolant leak (none from Subaru, however). So, you are dead on. No one has mentioned the evap core. I'll have to look into that as well. Unfortunately, I have no way to check for heater core leak, as it is inside the heater box and relatively inaccessible.
Then, there is the other "known" Subaru problem of some oil on a gasket that can last for 15 months+.
So, yes, I've definitely been breathing the refrigerant, and it is not nice stuff to be breathing. I've also been breathing the oil blend that was on this gasket which also causes a window film. And then again, there could be other items that I am breathing and these in combination do who knows what to me.
I'm just hoping that I don't end up with the multiple chemical sensitivity problems that you have and that once Subaru agrees to replace my Forester with another that I will be home free with no permanent damage. At this point, I can't be sure of that however.
Sorry to hear of your health issues as well. I have some friends who have similar problems, some of which are very debilitating.
Thanks for your comments.
#18146 of 19336 Re: Word to the Wise-SOA- LIARS & CHEATS [smudgejet]
Jun 16, 2009 (7:45 pm)
I haven't heard of anyone with as drastic a window film issue, nor the drastic chemical poisoning.
That is why I don't think it is a typical problem and am surprised Subaru won't just do the right thing and swap this car out for another like vehicle. I suppose the lawyers are worried about admitting anything is wrong.
#18147 of 19336 Re: Word to the Wise-SOA- LIARS & CHEATS [sgloon]
Jun 17, 2009 (7:56 am)
Lawyer up and keep us posted. Good luck getting a resolution.
Can't complain about ours, it's been great. New car smell has subsided and my wife is thrilled overall.
Funny thing is my 1998 model has a far worse smell than the 2009, in fact I used to call it "new car stench".
#18148 of 19336 Re: Misfire [girlcarbuilder]
Jun 17, 2009 (11:40 am)
Boy, you threw a lot of stuff at me. It was like being in college and the Prof. was squeezing two classes in to one.
I am driving a 2000 (hence user name) Forester. As of this post it has 296,856 miles on it. Over the last two fill ups I am getting 25+ mpg. At time the engine runs smooth as glass. Other times it has a slight miss. I reset the codes today (P0301 & 0420).
The Forester leaks a drop or two sitting overnight. When I am underneath the car, I see some sepage. I thought about steam cleaning the engine to locate it. But am waiting to hear the pros & cons. I have lost a little less that a quart after 4K miles of driving.
Speaking of driving, I average 84.6 miles a day. With 64 miles of that on the highway. I am basically a highway drive (62 mph) with a heavy use of my cruise control (even at 35-40 mph).