mkee87 Posted June 8, 2014 Share Posted June 8, 2014 My 06 legacy gt threw a p0171 the other day, the only mods it has is an aem air filter, grimmspeed uppipe, hogzaust and intake silencer delete. I used my code reader to clear the code and afterwords it didn't want to start. After trying a few more times it fired up. At stop lights the idle drops low like it wants to stall and it feels like it is making no boost when accelerating. Any ideas? Link to comment Share on other sites More sharing options...
Max Capacity Posted June 8, 2014 Share Posted June 8, 2014 AEM air filter, as in cold air intake or just a drop element ? 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...
mkee87 Posted June 8, 2014 Author Share Posted June 8, 2014 It's just the drop in filter. This morning I put the intake silencer back on, removed the maf and sprayed it down with some crc maf cleaner, checked the vacuum lines from the bpv and the fuel pressure regulator and reset the ecu. After a 40 mile drive it's running like itself again and no cel so far. Link to comment Share on other sites More sharing options...
Max Capacity Posted June 8, 2014 Share Posted June 8, 2014 60 miles is the normal cycle distance for the ECU. There is also some talk of 2 drive cycles. Good luck. Cleaning the MAF is always a good thing to do 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...
mkee87 Posted June 10, 2014 Author Share Posted June 10, 2014 On day 2 since the reset and still no cel. Any ideas what could have caused it in the first place? I don't want to actually be running lean and damage the motor. Link to comment Share on other sites More sharing options...
firehawk618 Posted June 10, 2014 Share Posted June 10, 2014 FWIW after clearing codes, turn the key off then back on. Leave it on for about 10 seconds THEN start your car. 10' CTS-V, A6, Airraid, 2.4 upper, ID850's, self tuned. SOLD:06' LGT Wagon. BNR16G, Catless UP, DOWN, Hexmods VB, Hexmods diff bushings, BIG TMIC. Best 0-60: 4.651 by AP 1/4= 13.678@100.73 mph, 1.945 60', Automatic transmission. Link to comment Share on other sites More sharing options...
mkee87 Posted June 10, 2014 Author Share Posted June 10, 2014 Thanks for the tip Link to comment Share on other sites More sharing options...
Max Capacity Posted June 10, 2014 Share Posted June 10, 2014 Gt's seem to need to have the front O2 sensor replaced after a time. As long as you have no vacuum leaks...? I might think about replacing it with a OEM O2 Sensor. Read http://legacygt.com/forums/showthread.php/idea-web-links-saved-various-parts-219238.html May be some info there on other sensors that work. My after market one lasted two years. 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...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.