Legacy25GT2005 Posted June 17, 2011 Author Share Posted June 17, 2011 Mine was very obvious noise so I don't think OP is having the same problem. Mine sounds nothing like that at all. If you are serious about video/audio, I will see what can be worked out. Link to comment Share on other sites More sharing options...
Legacy25GT2005 Posted June 17, 2011 Author Share Posted June 17, 2011 Just made a 4.5 mile trip to the grocery store and back on a cold engine. Running somewhat crappy. Returned home, hooked up the notebook and pulled the Learning View: http://s1.postimage.org/mdpnm5vo/Learning_View_SS_6_17_2011_8_57_55_AM.jpg then I reset the ECU. Haven't been back out on the road yet, but the engine always seems to run significantly better for some time after an ECU reset. Link to comment Share on other sites More sharing options...
PartyRock Posted June 17, 2011 Share Posted June 17, 2011 Just made a 4.5 mile trip to the grocery store and back on a cold engine. Running somewhat crappy. Returned home, hooked up the notebook and pulled the Learning View: http://s1.postimage.org/mdpnm5vo/Learning_View_SS_6_17_2011_8_57_55_AM.jpg then I reset the ECU. Haven't been back out on the road yet, but the engine always seems to run significantly better for some time after an ECU reset. http://www.seccs.org/forums/images/smilies/icon_mother_of_god.jpg disasterous. Link to comment Share on other sites More sharing options...
MasAyinde Posted June 17, 2011 Share Posted June 17, 2011 Dude you need to stop driving your car until you figure out whats going on. Is the CEL bulb working? Link to comment Share on other sites More sharing options...
rtbrjason Posted June 17, 2011 Share Posted June 17, 2011 That might be the worst stock LV I've ever seen. I really think you should get this car to a dealership as much as I hate dealerships.. Link to comment Share on other sites More sharing options...
Legacy25GT2005 Posted June 17, 2011 Author Share Posted June 17, 2011 Dude you need to stop driving your car until you figure out whats going on. Is the CEL bulb working? Yep. It comes on when key is turned to "On" position. It has never come on while driving and, as you can see above, no DTC's in the Learning View image. Link to comment Share on other sites More sharing options...
MasAyinde Posted June 17, 2011 Share Posted June 17, 2011 Just to be sure, load ECU flash and pull your ECU ROM and upload it here. Link to comment Share on other sites More sharing options...
Legacy25GT2005 Posted June 17, 2011 Author Share Posted June 17, 2011 Just to be sure, load ECU flash and pull your ECU ROM and upload it here. Do I need to connect the green connectors to read the ROM? Can you tell me where to find them? Tried reading without doing that and I get "unable to connect to vehicle interface". Link to comment Share on other sites More sharing options...
MasAyinde Posted June 17, 2011 Share Posted June 17, 2011 Look towards the firewall in the passenger side footwell. It will be on the left, hiding just under the edge of the carpet. When you put your hand where you think it would be, reach a little farther. Link to comment Share on other sites More sharing options...
PartyRock Posted June 17, 2011 Share Posted June 17, 2011 connect the green connectors, connect to laptop, turn key on, open up ecuflash, read from ecu, it saves it as a .hex file. post it Link to comment Share on other sites More sharing options...
Legacy25GT2005 Posted June 17, 2011 Author Share Posted June 17, 2011 Found the connectors and hooked them up. Turned key to On and acts as expected (fan cycles on/off, etc). Still cannot read rom with ECU Flash. I click Read from ECU and then select 2005-2006 blah blahLGTblahblah (or whatever it says; it seems to be the only appropriate choice for this 2005 LGT) from the list and I get the following in the log: [10:07:07.750] Using intrface FT232R USB UART A400fN1b [10:07:07.750] interface close [10:07:07.812] unable to connect to vehicle interface [10:07:07.812] interface close Am I forgetting to do something? This is all with key on, engine not running. Link to comment Share on other sites More sharing options...
PartyRock Posted June 17, 2011 Share Posted June 17, 2011 did you install the drivers accompanied in the ecuflash installation? weird that ecuflash wont connect yet romraider does. again i wonder if your ecu is faulty to some degree, however my tuner buddy looked at your LV and said it's def something internal in the engine. Link to comment Share on other sites More sharing options...
MasAyinde Posted June 17, 2011 Share Posted June 17, 2011 If it's not a driver issue, try restarting your laptop. My rom raider has intermittent issues with connecting to my ECU and they are fixed when I reboot. Link to comment Share on other sites More sharing options...
Legacy25GT2005 Posted June 17, 2011 Author Share Posted June 17, 2011 Tried again with same result. Guess I will have to play with it a bit to get it to connect. Assuming I get that to work, I will come back and post the rom. Link to comment Share on other sites More sharing options...
PartyRock Posted June 17, 2011 Share Posted June 17, 2011 potentially reinstall ecuflash, uninstall first. Link to comment Share on other sites More sharing options...
MasAyinde Posted June 17, 2011 Share Posted June 17, 2011 did you install the drivers accompanied in the ecuflash installation? weird that ecuflash wont connect yet romraider does. again i wonder if your ecu is faulty to some degree, however my tuner buddy looked at your LV and said it's def something internal in the engine. This is a possibility. A few years ago I helped rebuild an 11.5:1 compression NA engine. We saw lots of detonation and upon pulling it apart we noticed that the top of one of the combustion chambers had a little bit of damage that was creating a hot spot and causing the detonation. We had put so much work into porting the head that we decide to reuse it and pulled both heads to shave them down. That solved it. Link to comment Share on other sites More sharing options...
Legacy25GT2005 Posted June 17, 2011 Author Share Posted June 17, 2011 I uninstalled, rebooted, resinstalled ECU Flash. Same results. I also tried with my son's MacBook Pro running Windows 7 and once again got the same results. http://s3.postimage.org/2ll4ouqys/sprite_10.jpg I am using a VAG-COM cable (this one[ame=http://www.amazon.com/OBD2-Diagnostic-Cable-KKL409-1-VAG-COM/dp/B002WIN8VQ/ref=sr_1_1?ie=UTF8&qid=1308322861&sr=8-1]http://www.amazon.com/OBD2-Diagnostic-Cable-KKL409-1-VAG-COM/dp/B002WIN8VQ/ref=sr_1_1?ie=UTF8&qid=1308322861&sr=8-1[/ame]). Does that make a difference? Link to comment Share on other sites More sharing options...
MasAyinde Posted June 17, 2011 Share Posted June 17, 2011 That's the same cable I'm using. Did you try using the DBW selection above that? Link to comment Share on other sites More sharing options...
Legacy25GT2005 Posted June 17, 2011 Author Share Posted June 17, 2011 This is a possibility. A few years ago I helped rebuild an 11.5:1 compression NA engine. We saw lots of detonation and upon pulling it apart we noticed that the top of one of the combustion chambers had a little bit of damage that was creating a hot spot and causing the detonation. We had put so much work into porting the head that we decide to reuse it and pulled both heads to shave them down. That solved it. Maybe that would tie in with the misfires noted in cylinder #4? Link to comment Share on other sites More sharing options...
Legacy25GT2005 Posted June 17, 2011 Author Share Posted June 17, 2011 That's the same cable I'm using. Did you try using the DBW selection above that? Yes, I did. Guess I will have to keep at it... Link to comment Share on other sites More sharing options...
MasAyinde Posted June 17, 2011 Share Posted June 17, 2011 Maybe that would tie in with the misfires noted in cylinder #4? The fact that the misfire is mainly in #4 but also somewhat in #1 makes this a possibility. You may have a carbon buildup that only became problem within the last month. Has it been getting progressively worse or did it become huge overnight? Tiny nicks in metal can become hotspots and cause carbon to build up. This is why race engines are polished on the exhaust side to prevent buildup. Link to comment Share on other sites More sharing options...
MasAyinde Posted June 17, 2011 Share Posted June 17, 2011 Your LV looks safe at idle, so I would get some injector cleaner in there and let it idle for a while. MAYBE revving it to 1500. If it is carbon buildup, which I suspect since it's not throwing codes, it seems to be quite severe. If it is severe, stop ******* around and get a can of seafoam and enjoy the smoke show. Link to comment Share on other sites More sharing options...
Legacy25GT2005 Posted June 17, 2011 Author Share Posted June 17, 2011 Well... I guess I am going to have to ask you once again to check out this thread http://legacygt.com/forums/showthread.php/another-blown-engine-2005-legacy-2-5gt-turbo-162696.html That episode occurred after the start of this thread (when the whole "lag on acceleration" thing began). I can't say it was ever determined exactly what the problem was, but the pre-cat (?) was found to be severely deteriorated and - do I have this right? - starving the turbo's air intake? Link to comment Share on other sites More sharing options...
MasAyinde Posted June 17, 2011 Share Posted June 17, 2011 So the low oil isn't an issue anymore? If the car was running rich for any period of time, that would exacerbate the carbon build up issue. Link to comment Share on other sites More sharing options...
Legacy25GT2005 Posted June 17, 2011 Author Share Posted June 17, 2011 So the low oil isn't an issue anymore? If the car was running rich for any period of time, that would exacerbate the carbon build up issue. Oil does not appear to be an issue at this time. It seems like the rational (and inexpensive) thing to try would be injector cleaner and/or Seafoam as you suggested. Can you explain how to administer SeaFoam into this engine? Link to comment Share on other sites More sharing options...
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