ken_depew Posted February 6, 2005 Share Posted February 6, 2005 My car has no ecu flash and I wish I did from the other posts.But it still has its patterns of studder! Link to comment Share on other sites More sharing options...
KTM 525 Posted February 6, 2005 Share Posted February 6, 2005 Mine does it too when it's cold. It does seem to stop when it gets to operating temp. Not a big deal to me. Link to comment Share on other sites More sharing options...
arcsine Posted February 7, 2005 Share Posted February 7, 2005 It's a fourbanger, which means it's just going to run rough until it gets up to operating temp. Don't worry, mine does the same thing. Link to comment Share on other sites More sharing options...
Deer Killer Posted February 7, 2005 Share Posted February 7, 2005 I bet it stutters when hot too, but you're driving it differently when cold. Link to comment Share on other sites More sharing options...
Th3Franz Posted February 7, 2005 Share Posted February 7, 2005 It's a fourbanger, which means it's just going to run rough until it gets up to operating temp. Don't worry, mine does the same thing. That's a pretty lame reason if that's the case... other four bangers don't do it. -Franz The end of a Legacy http://www.youtube.com/th3franz Link to comment Share on other sites More sharing options...
DeepFreeze2 Posted February 7, 2005 Share Posted February 7, 2005 Hey guys, isn't the design of our engines the reason for "quirky" things like stutter and idle being a little "different"? Not to undermine an inherent issues that people my be having, just wondering after reading a lot of the posts. YA RLY!!! Home of +2500 useless posts!!!! Link to comment Share on other sites More sharing options...
Deer Killer Posted February 7, 2005 Share Posted February 7, 2005 That's a pretty lame reason if that's the case... other four bangers don't do it.Yeah I'm pretty sure we've covered all the lame reasons as well in the other stuttering threads.. It's a software problem. There is no reason for uneven combustion when you have computer controller fuel injection and even tumble control valves for more even mixture during idling. A six or more will pose little advantage. Link to comment Share on other sites More sharing options...
NewScooby Posted February 7, 2005 Share Posted February 7, 2005 How many miles do you all have on your cars? My car started running significantly better with a smoother idle, no hesitation anymore, and a minor improvement in gas mileage from about 2700 miles on. I have 4400 miles now with no complaints. I am curious if Subaru updated there ECU programming since they began producing the LGT. It might be worth checking with the dealer and see if they will reflash your ECU if you complain about hesitation issues with them. My car was built in Sept. Maybe someone should start a POLL asking when your car was manufactured and if it hesitates? There are enough people on here to see if ther is a trend. Just an idea. My car drove me nuts when it was new, but it did go away. Link to comment Share on other sites More sharing options...
firedawgs Posted February 7, 2005 Share Posted February 7, 2005 Do you have an auto or manual? Is it the clutch or the engine shuttering? Updated my vBGarage: Link to comment Share on other sites More sharing options...
NewScooby Posted February 7, 2005 Share Posted February 7, 2005 Do you have an auto or manual? Is it the clutch or the engine shuttering? Manual, engine from 2000-3300rpm or so. Link to comment Share on other sites More sharing options...
nKoan Posted February 7, 2005 Share Posted February 7, 2005 I believe some very early WRXs suffered from the same problem. It was an ECU thing. When an update is available, I'm sure you can go to Subaru to get the ECU reflashed to the new map. Or just do some ECUTek or AP flashing Link to comment Share on other sites More sharing options...
nKoan Posted February 7, 2005 Share Posted February 7, 2005 Oh, and yeah I'm experiencing the same thing on cold mornings, regardless of the operating temperature of my engine (though, it does diminish with a warmer engine). Link to comment Share on other sites More sharing options...
scoobydo2 Posted February 7, 2005 Share Posted February 7, 2005 It could be b/c of higher octane fuel. The higher the octane the harder it is to ignite. Link to comment Share on other sites More sharing options...
firedawgs Posted February 7, 2005 Share Posted February 7, 2005 I know that the WRX; especially the 02's had clutch shuttering issues. Problem was addressed to Subaru and a newer "better" clutch plate was replaced by SOA. Updated my vBGarage: Link to comment Share on other sites More sharing options...
ken_depew Posted February 8, 2005 Author Share Posted February 8, 2005 My car bucks just like newscoobys my car is a 5speed man does the 645 ecu flash help or not. Link to comment Share on other sites More sharing options...
jj808 Posted February 10, 2005 Share Posted February 10, 2005 It's a fourbanger, which means it's just going to run rough until it gets up to operating temp. Don't worry, mine does the same thing. Gonna have to throw the BS flag on this one. Had 00 Toyota Celica GT-S (I4). Didnt run rough when cold at all. It was limited to 6k rpm till warm but it didnt run "rough". Link to comment Share on other sites More sharing options...
ken_depew Posted February 11, 2005 Author Share Posted February 11, 2005 Hey jj this is for real no bs my car has had this problem from day one.I bought this car 9/12/04 and I have 3100 miles on car 1 oil change under my belt.I have just learned to ignore but it still DRIVES ME CRAZZY!!!!!! Link to comment Share on other sites More sharing options...
twisted Posted February 21, 2005 Share Posted February 21, 2005 affirmative my 2000 mile 5EAT jerks during cold temp from 1st to 2nd and 2nd to 3rd shift as well. It goes away when it reaches normal operating temp. sux0rz!!!! Link to comment Share on other sites More sharing options...
racerdave Posted February 21, 2005 Share Posted February 21, 2005 Is it really the motor, or is it some sort of driveline lash until all the trans/diff fluids warm up? I've only noticed it when cold, and only when applying 1/2 throttle or more. Lighter applications of the throttle don't bring it on at all. I'd think it would be engine related, but I'm still trying to sort it out... Link to comment Share on other sites More sharing options...
ken_depew Posted February 23, 2005 Author Share Posted February 23, 2005 Yes Racerdave it is just like that symptom!!!!!!!!!! Link to comment Share on other sites More sharing options...
ken_depew Posted February 23, 2005 Author Share Posted February 23, 2005 Now Does the app work to remove this has any of are viewers reported success! Link to comment Share on other sites More sharing options...
Willy Posted February 23, 2005 Share Posted February 23, 2005 I also know the feeling. I complained to the Dealer but they didn't have enought knowledge to fix it and it is very difficult to duplicate it at the Dealer. It is quite noticable in cold between 2000 -3000 rpms when changing gears and you press the throttle aprox 1/2 way. (MANUAL TRANSMISSION ONLY) When it warms up it gets much better and I can live with it but it is still there. It definitely are the symptoms of lean mixture in the engine map at that point. I don't know if the ECU can be re-mapped and fixed. Link to comment Share on other sites More sharing options...
Magowin Posted February 23, 2005 Share Posted February 23, 2005 I usually notice it more in my car if I don't drive it for a couple days as it's not my daily driver, but it does happen to me quite a bit as to why I will get the AccessPort soon. Link to comment Share on other sites More sharing options...
ken_depew Posted February 23, 2005 Author Share Posted February 23, 2005 Please keep this post going with suggestions! Thanks.Magowin I will be waiting for your ap results. Link to comment Share on other sites More sharing options...
twisted Posted February 24, 2005 Share Posted February 24, 2005 its seems like the jerk is from the rear until it's warmed up to operating temp. it's evident that thr tranny type or awd type is not the reason. something in the rear diff or the diff oil temp??? it's annoying. Also someone at work has a 96 legacy wagon and he says his does not go away till a half hour. So i'm wondering if this problem gets worse over time/miles Link to comment Share on other sites More sharing options...
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