heiche Posted March 25, 2016 Share Posted March 25, 2016 Congrats on #4 (kid, not cylinder) BtSsm - Android app/Bluetooth adapter. LV, logging, gauges and more. For 05-14 Legacy (GT, 2.5, 3.0, 3.6), 02-14 WRX, 04-14 STi, 04-14 FXT, 05-09 OBXT Link to comment Share on other sites More sharing options...
StkmltS Posted March 25, 2016 Author Share Posted March 25, 2016 Thanks! I probably should borescope all of the cylinders to see how they're holding up. So far #2 is my only confirmed problem, but I'm curious about what #4 looks like. My DiySB rebuild Got Misfires? Link to comment Share on other sites More sharing options...
hadvw Posted April 18, 2016 Share Posted April 18, 2016 I hope you get everything fixed. I had a similar issue a couple of years back: car stalling at idle just after warming up (esp with AC on!). Tried a few different things. I believe I ended up replacing one coil pack. And then, I switched from a "pro-tune" (which, honestly, seemed a bit unprofessional to me) to a TA e-tune, and after that's it's not been an issue.  Another thing I did while I had the problem: use FreeSSM (at first, with APv1 tune) and then romRaider/ecuTune (with the TA tune) to bump up idle rpm. With FreeSSM, it got reset whenever the battery was removed, and the rpm at idle was high enough to be a little annoying, but at least the car didn't stall anymore in the middle of traffic when stopping at a light, which was much MORE annoying/dangerous. I'm sure by now you've got confirmation that cyl #2 is bad, and all that, but hey - if you're willing to try something simple to save a few $K... Link to comment Share on other sites More sharing options...
StkmltS Posted April 19, 2016 Author Share Posted April 19, 2016 (edited) What you did with your tune sounds very similar to what I did, except I use BtSsm to monitor and RomRaider/EcuFlash to play with the ROM. Rescaling my MAF table really helped, and bumping up the idle smoothed things out even more. My problem is still there, but at least it doesn't stall anymore. The car is running well enough to tolerate, and if I didn't get a fat tax return this year I'd probably just put off the rebuild until the motor fails. But alas, I did get a fat return and the rebuild will be sooner rather than later. Does anyone know if the case bolts are torque-to-yield? I haven't found a solid answer yet and I'd like to reuse my existing bolts if possible. Edited April 19, 2016 by StkmltS My DiySB rebuild Got Misfires? Link to comment Share on other sites More sharing options...
Max Capacity Posted April 19, 2016 Share Posted April 19, 2016 Just a thought, if the car is not running correctly but you made some changes to the tables to get it to run...ok, but you still haven't fixed the root cause. I'm lead to believe these ECU's learn as you drive. Is your ECU learning bad things that may pop up later ?  I would want the engine running correctly (Map/tune wise) before I pulled it for a rebuild, than have issues trying to start it or shortly after the new engine is running. Just thinking out loud here... 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it.  Engine Build - Click Here Link to comment Share on other sites More sharing options...
StkmltS Posted April 19, 2016 Author Share Posted April 19, 2016 Just a thought, if the car is not running correctly but you made some changes to the tables to get it to run...ok, but you still haven't fixed the root cause. I'm lead to believe these ECU's learn as you drive. Is your ECU learning bad things that may pop up later ?  I would want the engine running correctly (Map/tune wise) before I pulled it for a rebuild, than have issues trying to start it or shortly after the new engine is running. Just thinking out loud here... Thinking out loud is a good thing in my book. I first noticed my problem when my idle became funky and the ECU would throw misfire codes like candy at a parade. By logging and analyzing boatloads of data, I found that my misfire almost exclusively happens at low rpm/mph. I don't understand why/if speed effects it, but it seems like it does. Anyways... I really like using cruise control, so resetting my ECU became almost a daily habit.  My learned fuel trim (LV) for the lowest range (g/s) was consistently way off.Stalling seemed most likely to happen immediately after an ECU reset. Bingo! Resetting my ECU reset the LVs back to zero, which made it hard for the engine to breath properly, which caused stalling. Stalling became less frequent if I reset the ECU less frequently. I disabled the misfire codes in my ROM and my LVs stayed consistent because no more ECU resets, and stalling all but went away.   After cleaning my MAF sensor I started playing around with the MAF scaling table. It helped, alot. The misfire is obviously still present, but the LVs look good (within ± 5%). I also bumped up the idle RPM to smooth things out even more.  In conclusion: Something is causing my car to misfire, something is causing my car to stall, and something is causing my fuel trims (with the stock MAF scaling table) to be way off. I'm assuming the same root cause for all three symptoms, and I'm assuming that root cause is the cracked piston. Other than what I've already mentioned, my tune is stock. One of the tasks in my rebuild project will be to reflash the bone-stock ROM back into the ECU. My DiySB rebuild Got Misfires? Link to comment Share on other sites More sharing options...
StkmltS Posted April 21, 2016 Author Share Posted April 21, 2016 (edited) Tax return showed up this morning http://legacygt.com/forums/attachment.php?attachmentid=228702&stc=1&thumb=1&d=1461237504 Edited April 21, 2016 by StkmltS My DiySB rebuild Got Misfires? Link to comment Share on other sites More sharing options...
StkmltS Posted April 21, 2016 Author Share Posted April 21, 2016 WTB thread is live. If you've helped me out in this thread I'll give you priority over others. http://legacygt.com/forums/showthread.php/cincinnati-area-parts-my-full-rebuild-take-my-money-252108.html?p=5386135#post5386135 My DiySB rebuild Got Misfires? Link to comment Share on other sites More sharing options...
xt2005bonbon Posted April 21, 2016 Share Posted April 21, 2016 Just looked at your wtb thread. I don't have anything to sell you . So you're not using the oem spark plugs? I don't recognize the part number you posted. Link to comment Share on other sites More sharing options...
StkmltS Posted April 27, 2016 Author Share Posted April 27, 2016 My error, I changed it in my list. My DiySB rebuild Got Misfires? Link to comment Share on other sites More sharing options...
StkmltS Posted May 17, 2016 Author Share Posted May 17, 2016 Parts have been showing up for a few weeks and the baby showed up last Monday. It feels like Christmas Eve and I'm 5 years old again. Oh yeah, the baby is nice too My DiySB rebuild Got Misfires? Link to comment Share on other sites More sharing options...
xt2005bonbon Posted May 17, 2016 Share Posted May 17, 2016 Congrats!! Ours will show up in about two weeks.. Link to comment Share on other sites More sharing options...
StkmltS Posted May 17, 2016 Author Share Posted May 17, 2016 Boy or girl? First, second, third...? My DiySB rebuild Got Misfires? Link to comment Share on other sites More sharing options...
xt2005bonbon Posted May 17, 2016 Share Posted May 17, 2016 Boy, second. Another one who will help working in the garage . Link to comment Share on other sites More sharing options...
StkmltS Posted May 17, 2016 Author Share Posted May 17, 2016 Very nice. This one was my second son, fourth child. It's nice having girls and boys, it brings a good mix to the house. My DiySB rebuild Got Misfires? Link to comment Share on other sites More sharing options...
xt2005bonbon Posted May 17, 2016 Share Posted May 17, 2016 I bet it does. Link to comment Share on other sites More sharing options...
xt2005bonbon Posted May 19, 2016 Share Posted May 19, 2016 I think I am officially in the same boat now with my 06.. Which borescope did you get again? Link to comment Share on other sites More sharing options...
xt2005bonbon Posted May 19, 2016 Share Posted May 19, 2016 Do you think this one would work? Â http://www.ebay.com/itm/2-5-7-10-15m-4-6LED-USB-Waterproof-Endoscope-Borescope-Inspection-Camera-7mm-WP-/121773540082?var=&hash=item1c5a44c2f2:m:mmIirawx_Mh5lwqhyJtwDRA Link to comment Share on other sites More sharing options...
StkmltS Posted May 19, 2016 Author Share Posted May 19, 2016 The camera diameter on that one looks a decent amount smaller than the one I have. The mirror attachment looks way more useful too. For less than $8 it's worth a shot. Unless you'll use it for something else that's 5m away, get the 2m length. Mine is 5m and dealing with all of the extra length is annoying. Mine is [ame=http://smile.amazon.com/CrazyFire-2-0MP-Inspection-Camera-Locator/dp/B00EQNCMTY?ie=UTF8&keywords=borescope&qid=1463671560&ref_=sr_1_10&s=instant-video&sr=8-10]this.[/ame] It's branded as "CrazyFire" but the 'guts' are probably 99% the same as most others out there. My DiySB rebuild Got Misfires? Link to comment Share on other sites More sharing options...
xt2005bonbon Posted May 19, 2016 Share Posted May 19, 2016 I see. Yours had 6 LEDs though and was HD. Did you feel the 6 LEDs was adding glare or was it just fine? Link to comment Share on other sites More sharing options...
StkmltS Posted May 19, 2016 Author Share Posted May 19, 2016 The LEDs are adjustable (0-100%) so if glare was too much I just turned it down. 6 fully-lit LEDs were waaaaay more than enough inside the dark cylinder, and I think 4 LEDs would still be more than you need. Creeping around under the intake manifold I usually don't even have the LEDs on. My DiySB rebuild Got Misfires? Link to comment Share on other sites More sharing options...
xt2005bonbon Posted May 19, 2016 Share Posted May 19, 2016 thanks man. well, I'll purchase it and see how many scratches I have in #2 Link to comment Share on other sites More sharing options...
StkmltS Posted May 19, 2016 Author Share Posted May 19, 2016 I'm curious to see pics. Feel free to hijack this thread for a while if you don't want to start your own. My DiySB rebuild Got Misfires? Link to comment Share on other sites More sharing options...
xt2005bonbon Posted May 19, 2016 Share Posted May 19, 2016 I will then . Link to comment Share on other sites More sharing options...
StkmltS Posted May 31, 2016 Author Share Posted May 31, 2016 My rebuild thread is here. My DiySB rebuild Got Misfires? Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now