wurkenman Posted June 6, 2013 Share Posted June 6, 2013 I have been dealing with a bunch of random issues with my LGT ever since I got it a year ago. I bought the car with a blown engine and built it. It has always had a very rough idle and throws a random cylinder misfire code here and there. When cruising in 3rd gear at about 35MPH there was always a slight hesitation or felt like a misfire again. All three time I have had it tuned, my tuner even stated that there was some weird interference too. Finally threw a P0607 (control module performance) code and after I reset that it ran fine for a couple of days. Then all of a sudden I was leaving work 2 weeks ago and the car started right up like always. Only difference this time is that it died as soon as it fired up. Did this about 30 times before it stayed running to drive home. The last 2 weeks sitting at home I have tried to start it and all the time it just dies. I have been looking for an EC for a couple of weeks and finally found one. Thanks again MONEY. The car goes in tomorrow for the pairing with my immobilizer so I can reload my tune and hopefully have a running car again. Wish me luck fellow Subaru nuts. If you woke up today, you have another chance to do it right. Link to comment Share on other sites More sharing options...
bomberlegacy Posted June 6, 2013 Share Posted June 6, 2013 Sounds terrible. Good luck! '08 Legacy 2.5i - hybrid intake - delta 1000 - E85 - magnaflow exhaust Link to comment Share on other sites More sharing options...
wurkenman Posted June 7, 2013 Author Share Posted June 7, 2013 Ready for the doctor. If you woke up today, you have another chance to do it right. Link to comment Share on other sites More sharing options...
JmP6889928 Posted June 7, 2013 Share Posted June 7, 2013 Good luck with it. I hope it clears up your PITA issues. Link to comment Share on other sites More sharing options...
wurkenman Posted June 8, 2013 Author Share Posted June 8, 2013 Well, got a call from the doctor. Seems it's not a brain transplant, but a heart transplant. Turns out after swapping in my new(used) ECU, that was not the problem. They put the original ECU back in and started to track things down. Turns out it was the BIU (body integrated unit), this basically controls all the other functions on the car except the engine control functions. Part ordered and hopefully should have the car back on Monday. Kind of explains now all of the random problems. The bad BIU had an intermittent short. If you woke up today, you have another chance to do it right. Link to comment Share on other sites More sharing options...
m sprank Posted June 8, 2013 Share Posted June 8, 2013 BIU ties the locks/alarm/immobizer and more to the ecm. If the BIU goes, all sorts of oddities happen. Link to comment Share on other sites More sharing options...
wurkenman Posted June 9, 2013 Author Share Posted June 9, 2013 BIU ties the locks/alarm/immobizer and more to the ecm. If the BIU goes, all sorts of oddities happen. You understated this. I was wondering why I have done the seat belt chime delete about 30 times and it would NEVER stay. Kind of makes sense now why all of the random codes I was getting too. At least I will have a couple of ECU's to try and sell to get some of the cash back. If you woke up today, you have another chance to do it right. Link to comment Share on other sites More sharing options...
m sprank Posted June 9, 2013 Share Posted June 9, 2013 I have had "fun" troubleshooting BIU issues and immobilizer issues in the past. Link to comment Share on other sites More sharing options...
JmP6889928 Posted June 10, 2013 Share Posted June 10, 2013 Chrysler has had the BCM (body control module) issues for years. It definitely affects driveability as well as the stupid door lock, alarm, interior light, trunk release, etc. issues. I would bet that will clear everything up. Link to comment Share on other sites More sharing options...
wurkenman Posted June 14, 2013 Author Share Posted June 14, 2013 Just an update. The ecu took out the new BIU. Now I'm looking at a new ECU and a BIU 2 more new keys (5 total at this point). The keys can only be paired once I guess. The bill went from the initial 300 to a nice round figure of 2700. They claim that the tune and the condition of the original ECU is causing the problems. New parts should be here on Monday and then the install and programming again. You do NOT even want to hear the conversations my wife has had AT me. If you woke up today, you have another chance to do it right. Link to comment Share on other sites More sharing options...
JmP6889928 Posted June 14, 2013 Share Posted June 14, 2013 Just an update. The ecu took out the new BIU. Now I'm looking at a new ECU and a BIU 2 more new keys (5 total at this point). The keys can only be paired once I guess. The bill went from the initial 300 to a nice round figure of 2700. They claim that the tune and the condition of the original ECU is causing the problems. New parts should be here on Monday and then the install and programming again. You do NOT even want to hear the conversations my wife has had AT me. Possible to find a used one on here or over on NASIOC? Maye if they are a matched set, you would be OK? I've not changed these before, at least on Subaru's but it makes sense that if they were matched, they should work. I would check the vehicle part outs and see what you could find. Sorry for your shi**y troubles. I truly hope they work out. Link to comment Share on other sites More sharing options...
m sprank Posted June 14, 2013 Share Posted June 14, 2013 Subaru always blames the tune. So what is really taking out the ecm? Is there an underlying cause to its demise? Link to comment Share on other sites More sharing options...
wurkenman Posted June 15, 2013 Author Share Posted June 15, 2013 Briefly where I stand as of now. Bought a used ECU and took it to dealer. They installed it and the original problem still existed. Put in original ECU and a new BIU, problem still came back. Now putting in factory new ECU and BIU. They do not want to try either of the old parts because if the power spike from either one already caused damage, then we are back to square one. Once keys have been paired with the immobilizer, they can't be paired with a new system, hence the pile of keys. Gonna be an expensive trip to the doctor, but hopefully I will have a good as new electrical system. If you woke up today, you have another chance to do it right. Link to comment Share on other sites More sharing options...
wurkenman Posted June 26, 2013 Author Share Posted June 26, 2013 Just an update. New ECU and BIU. Car was washed and waxed and they were getting ready to call me and problem still exists. Car starts and dies. Sometimes it will stay running, but most times it just starts and dies. The tech says he has been working on Subarus for 25 years and has never ran into this before. Now it looks like he will have to pull the BIU and ECU and trace wires at pin out locations individually to see what went wrong. Any one else ever hear of this? Gonna be a long costly operation. If you woke up today, you have another chance to do it right. Link to comment Share on other sites More sharing options...
m sprank Posted June 27, 2013 Share Posted June 27, 2013 Could be almost anything. You have an issue not encountered by most (I would say less than 0.5% of owners). Ever have any rodents take up home in your car? Link to comment Share on other sites More sharing options...
wurkenman Posted June 27, 2013 Author Share Posted June 27, 2013 Could be almost anything. You have an issue not encountered by most (I would say less than 0.5% of owners). Ever have any rodents take up home in your car? I know, it kind of sucks, but I still like my car. Could have had rodents. The car sat on a lot for 2 years before I got it with a blown engine. The battery was dead as road kill when I picked it up. Who knows how many time it was jumped and maybe a power spike or two. If you woke up today, you have another chance to do it right. Link to comment Share on other sites More sharing options...
ibr_adam09 Posted June 27, 2013 Share Posted June 27, 2013 Check your grounds ? mainly the one by the throttle body where your engine harness grounds too. Link to comment Share on other sites More sharing options...
fahr_side Posted June 27, 2013 Share Posted June 27, 2013 Exorcism? Obligatory '[URL="http://legacygt.com/forums/showthread.php/2008-gh8-238668.html?t=238668"]build thread[/URL]' Increased capacity to 2.7 liters, still turbo, but no longer need spark plugs. Link to comment Share on other sites More sharing options...
Moderators BarManBean Posted June 27, 2013 Moderators Share Posted June 27, 2013 What is this nonsense about keys only being paired once? Is that true? "Bullet-proof" your OEM TMIC! <<Buy your kit here>> Not currently in stock Link to comment Share on other sites More sharing options...
m sprank Posted June 27, 2013 Share Posted June 27, 2013 I know, it kind of sucks, but I still like my car. Could have had rodents. The car sat on a lot for 2 years before I got it with a blown engine. The battery was dead as road kill when I picked it up. Who knows how many time it was jumped and maybe a power spike or two. That might explain some of it. With a car that sat that long and has a storied history, it does not surprise me that there is an odd electrical issue now (especially with my experiences with how "touchy" the systems can be). It could be a ground, a short, a voltage drop or spike, a previous repair using wire of the incorrect size/power factor/impedance. It could be... :spin: Link to comment Share on other sites More sharing options...
SubOperator Posted June 27, 2013 Share Posted June 27, 2013 Got to be wiring. I had a different BIU connected to my car number of times when I was fixing my illumination issue, and nothing went wrong. I couldn't run the car since I didn't pair ECU and BIU. You already went through various ECU and BIU, wiring is the only thing left... Good luck. 2005 LGT Wagon Limited 6 MT RBP Stage 2 - 249K 2007 B9 Tribeca Limited DGM - 272K SOLD - 2005 OB Limited 5 MT Silver - 245K SOLD - 2010 OB 6 MT Silver - 205K Link to comment Share on other sites More sharing options...
wurkenman Posted July 26, 2013 Author Share Posted July 26, 2013 Got a call from the Subaru doctor. Looks like they have the problem isolated to the instrument cluster. I get my car back tomorrow. Does anyone know if the cluster somehow need to be "paired" or programmed, or can I start looking for a replacement and just plug and play. I am OOOHHHHH so ready to PLAY, it's been 7 weeks. If you woke up today, you have another chance to do it right. Link to comment Share on other sites More sharing options...
wurkenman Posted July 26, 2013 Author Share Posted July 26, 2013 Picked up the car. After a 20+ mile drive home , all seems well and right with the world again. Seems to run smoother than it ever has since I have owned it. Bill for the repair sucked, but I at least have 3 ECU's and @ BIU's I can sell to try and recapture some of my loss. If you woke up today, you have another chance to do it right. Link to comment Share on other sites More sharing options...
mwiener2 Posted July 26, 2013 Share Posted July 26, 2013 What did they say was the final issue? Sounds like you paid for a lot of their mis-diagnosis My Mods List (Updated 8/22/17) 2005 Outback FMT Running on Electrons Link to comment Share on other sites More sharing options...
700watts Posted July 26, 2013 Share Posted July 26, 2013 sounds like a flood vehicle Link to comment Share on other sites More sharing options...
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