Pawlwawl06 Posted December 20, 2008 Share Posted December 20, 2008 Ok so on my 2006 2.5i 5MT, I have recently noticed that my car is not revving as quickly as it used to. When i rev the engine up and disengage the clutch, I'm at 1500 RPMs where usually it will rev up to 2000 and I take off. I know my driving habits have not changed, its definetly the revs. Also seems like the engine hesitates a second before it revs. I have started to hear a grinding noise after I hit the gas but before the engine revs. This all happens within a few seconds, but it is not the norm. Anyone have any ideas? Going to the dealer next week... Link to comment Share on other sites More sharing options...
987687 Posted December 20, 2008 Share Posted December 20, 2008 How many miles do you have on it? Link to comment Share on other sites More sharing options...
WhatV8 Posted December 20, 2008 Share Posted December 20, 2008 Could be your throttle body stepper motor based on your description. Ah, the joys of a throttle-by-wire setup. Let us know what you find. Link to comment Share on other sites More sharing options...
Pawlwawl06 Posted December 20, 2008 Author Share Posted December 20, 2008 It has about 47K miles Link to comment Share on other sites More sharing options...
Juicity Posted December 21, 2008 Share Posted December 21, 2008 nom nom nom.... Lightwwight crnkshaft pulley ftw mofo Link to comment Share on other sites More sharing options...
aigochamaloh Posted December 21, 2008 Share Posted December 21, 2008 nom nom nom.... Lightwwight crnkshaft pulley ftw mofo That still doesn't address the fact that the OP is having issues in stock form. Fix the problem first. Link to comment Share on other sites More sharing options...
Pawlwawl06 Posted December 22, 2008 Author Share Posted December 22, 2008 Also, recently switched to Synthetic oil about 7 -8K miles ago. I have noticed my gas mileage has really decreased by 2 - 3 mpgs. Link to comment Share on other sites More sharing options...
naimouasta Posted December 22, 2008 Share Posted December 22, 2008 have you disconnected the battery lately? i noticed that when i do, the throttle gets really laggy, i even stall sometimes because of how different it is. but as the computer learns again it gets better. Link to comment Share on other sites More sharing options...
Pawlwawl06 Posted December 22, 2008 Author Share Posted December 22, 2008 have you disconnected the battery lately? i noticed that when i do, the throttle gets really laggy, i even stall sometimes because of how different it is. but as the computer learns again it gets better. Hmmmm I just disconnected my battery to clean my air filter last week. Probably twice within the past 3 or 4 months. Link to comment Share on other sites More sharing options...
frostbite3360 Posted December 22, 2008 Share Posted December 22, 2008 Disconnecting the battery does cause the engine to lag pretty bad for a day or two. Pretty normal for me considering I disconnect my battery usually every few weeks cuz im messing with something. The ECU has to re-learn a lot of stuff. But that does not totally explain your problem. You say when you rev it, and then disengage the clutch youre at 1500 rpm, when youd usually be at 2000 rpms, correct? How high do you rev it to when you do that, till the limiter kicks in or at 6000 rpm or something? It seems like the engine wants to go down to lower revs quicker. Thats different than your engine not revving as quickly as it used to. You and I have basically the same car, so to me it sounds like your engine is lagging for some reason. If this keeps up or gets worse, check your engine with an oil pressure gauge. The reason the engine might want to settle down quicker is because its losing pressure rapidly when you tap off the gas. Just a theory but I know the tendencies of our cars. Link to comment Share on other sites More sharing options...
Pawlwawl06 Posted December 22, 2008 Author Share Posted December 22, 2008 Disconnecting the battery does cause the engine to lag pretty bad for a day or two. Pretty normal for me considering I disconnect my battery usually every few weeks cuz im messing with something. The ECU has to re-learn a lot of stuff. But that does not totally explain your problem. You say when you rev it, and then disengage the clutch youre at 1500 rpm, when youd usually be at 2000 rpms, correct? How high do you rev it to when you do that, till the limiter kicks in or at 6000 rpm or something? It seems like the engine wants to go down to lower revs quicker. Thats different than your engine not revving as quickly as it used to. You and I have basically the same car, so to me it sounds like your engine is lagging for some reason. If this keeps up or gets worse, check your engine with an oil pressure gauge. The reason the engine might want to settle down quicker is because its losing pressure rapidly when you tap off the gas. Just a theory but I know the tendencies of our cars. Well it seems like now I have get the revs up to about 2500 before I can disengage the clutch and get the car going. Seems like its getting a little better. When I am sitting in the car though, and I hear this noise when i rev up, it almost sounds like it is coming from the transmission or the exhaust, not so much the engine itself. I'll look into this dude, thanks. Link to comment Share on other sites More sharing options...
Pawlwawl06 Posted December 23, 2008 Author Share Posted December 23, 2008 UPDATE: Today my car feels so much better. I've been driving around the past two days at different speeds and it seems like the revs are returning to normal. I still get that squeaking sound when i hit the gas though. Link to comment Share on other sites More sharing options...
mrmako Posted December 25, 2008 Share Posted December 25, 2008 I'd still go see the dealer. It won't hurt, and they may suggest something (you should still have warranty, so no cost). Link to comment Share on other sites More sharing options...
blackfang Posted December 28, 2008 Share Posted December 28, 2008 I'd still go see the dealer. It won't hurt, and they may suggest something (you should still have warranty, so no cost). Not for that symptom at 47k unless he has SAS Gold. Only other thing that could cover it would be an ECU reflash for that condition which is covered 8/80k [SIZE=1][URL="http://public.fotki.com/blackfang/"]Pics[/URL] [B]08 KawasakiZZR 600- exhaust and other mods 98 Camaro Z/28 HT- some mods......street/strip car 07 Legacy 2.5i- SPT exhaust...daily driver[/B][/SIZE] Link to comment Share on other sites More sharing options...
05Limited Posted December 28, 2008 Share Posted December 28, 2008 5yr/60k on powetrain items...like the engine. Link to comment Share on other sites More sharing options...
blackfang Posted December 28, 2008 Share Posted December 28, 2008 5yr/60k on powetrain items...like the engine. Internal engine, trans and axles. You can have issues with the engine, but if it is not internal and falls under those guidelines, then it does not fall under powertrain. His concern doesn't sound internal but more with the DBW/Throttle body related and that is not powertrain. [SIZE=1][URL="http://public.fotki.com/blackfang/"]Pics[/URL] [B]08 KawasakiZZR 600- exhaust and other mods 98 Camaro Z/28 HT- some mods......street/strip car 07 Legacy 2.5i- SPT exhaust...daily driver[/B][/SIZE] Link to comment Share on other sites More sharing options...
Pawlwawl06 Posted December 30, 2008 Author Share Posted December 30, 2008 Yeah, to me, this does not sound internal at all. The engine is in excellent shape. Starts smoothly, idles well, accelerates smoothly. I have also noticed that when I shift from 3rd to 4th, I hear this loud ticking/rattling noise in between shifts. This is only when I hit the clutch and pull out of 3rd gear. I'll get a chance to go to the dealership next thursday/friday, ill give them the scenario and see what they have to say. Any possibility this may be a drivetrain issue? Link to comment Share on other sites More sharing options...
blackfang Posted January 2, 2009 Share Posted January 2, 2009 Yeah, to me, this does not sound internal at all. The engine is in excellent shape. Starts smoothly, idles well, accelerates smoothly. I have also noticed that when I shift from 3rd to 4th, I hear this loud ticking/rattling noise in between shifts. This is only when I hit the clutch and pull out of 3rd gear. I'll get a chance to go to the dealership next thursday/friday, ill give them the scenario and see what they have to say. Any possibility this may be a drivetrain issue? There could be a possibility it could be powertrain related. Who you taking it to? Perry? [SIZE=1][URL="http://public.fotki.com/blackfang/"]Pics[/URL] [B]08 KawasakiZZR 600- exhaust and other mods 98 Camaro Z/28 HT- some mods......street/strip car 07 Legacy 2.5i- SPT exhaust...daily driver[/B][/SIZE] Link to comment Share on other sites More sharing options...
Silverstar Posted January 2, 2009 Share Posted January 2, 2009 Poor performance and reduced gas mileage? Have you checked a plug recently? If you haven't replaced plugs yet, a new set can have a big impact on both of these items. Link to comment Share on other sites More sharing options...
Pawlwawl06 Posted January 8, 2009 Author Share Posted January 8, 2009 Ok, went to the dealership today. According to them, I have a rod bearing going out. They hear ticking when the engine is revved up to the top end of the RPMs. They will attempt to make a case with Subaru to try and get it covered under warranty. I'm taking every service receipt I have to them tomorrow. The service rep. is estimating the cost to be around $1,200. The only explanation I got was that this is due to starving the engine of oil. I do routine oil changes every 3-5K miles. The car was preowned with 24K miles when i purchased it. I was under the impression that we have a 60K mile powertrain warranty right? Link to comment Share on other sites More sharing options...
blackfang Posted January 8, 2009 Share Posted January 8, 2009 Ok, went to the dealership today. According to them, I have a rod bearing going out. They hear ticking when the engine is revved up to the top end of the RPMs. They will attempt to make a case with Subaru to try and get it covered under warranty. I'm taking every service receipt I have to them tomorrow. The service rep. is estimating the cost to be around $1,200. The only explanation I got was that this is due to starving the engine of oil. I do routine oil changes every 3-5K miles. The car was preowned with 24K miles when i purchased it. I was under the impression that we have a 60K mile powertrain warranty right? Yes, the powertrain is 5/60k. When you have the possibility of a spun bearing, SOA, like all manufacturers wants the maintenance records for proof they were done. Most likely they will have to go into the motor to find out for further proof. [SIZE=1][URL="http://public.fotki.com/blackfang/"]Pics[/URL] [B]08 KawasakiZZR 600- exhaust and other mods 98 Camaro Z/28 HT- some mods......street/strip car 07 Legacy 2.5i- SPT exhaust...daily driver[/B][/SIZE] Link to comment Share on other sites More sharing options...
blackfang Posted January 14, 2009 Share Posted January 14, 2009 Updates? [SIZE=1][URL="http://public.fotki.com/blackfang/"]Pics[/URL] [B]08 KawasakiZZR 600- exhaust and other mods 98 Camaro Z/28 HT- some mods......street/strip car 07 Legacy 2.5i- SPT exhaust...daily driver[/B][/SIZE] Link to comment Share on other sites More sharing options...
Pawlwawl06 Posted January 15, 2009 Author Share Posted January 15, 2009 Haven't heard from Perry Subaru yet, I'm considering taking to Casey to see what they have to say. Link to comment Share on other sites More sharing options...
naimouasta Posted January 15, 2009 Share Posted January 15, 2009 i thought 2.5 NA motors were pretty durable? is this widespread issue? Link to comment Share on other sites More sharing options...
blackfang Posted January 15, 2009 Share Posted January 15, 2009 Haven't heard from Perry Subaru yet, I'm considering taking to Casey to see what they have to say. Have you called Perry to see what is going on? You have already had issues with Casey why would you even take it to them? [SIZE=1][URL="http://public.fotki.com/blackfang/"]Pics[/URL] [B]08 KawasakiZZR 600- exhaust and other mods 98 Camaro Z/28 HT- some mods......street/strip car 07 Legacy 2.5i- SPT exhaust...daily driver[/B][/SIZE] Link to comment Share on other sites More sharing options...
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