airdevil85 Posted November 12, 2008 Share Posted November 12, 2008 my gt is sluggish when starting out it, it dosnt do it every time, dosnt seem to make a differerence weather the engine is warm or cold, dosnt seem to matter weather I been driving it for a while or if im just starting out it does it at ramdom times... The check engine light is on for 2 codes: 1) catalyst efficency below threshold 2) knock sensor bank 1 high? The cats are now hollowed out since I cant afford a new on right now, when I took it all apart the front one looks like it crumbled apart, Ill replace them ths spring when I get some $ saved up... The knock sensor does it need to be replaced? is there a way to test it? even with the cats hollowed out it still seems to be sluggish at time but when it isnt it runs like it did when it was new... Thanks in advance Link to comment Share on other sites More sharing options...
Bdubs Posted November 16, 2008 Share Posted November 16, 2008 You may be throwing that catalyst code due to a bad rear o2 sensor. That is a much cheaper fix, so troubleshoot that first. Knock sensor may be causing your sluggish start. Here is yet another one of those useful links. Once again, this isn't from a Legacy, but just about all 2.5 have it in the same area. http://www.scoobymods.com/forums/showthread.php?t=4039 You can use this for reference, and the instructions attached is how you want to replace yours. Knock sensor isn't as cheap, an genuine one may run you $65 I believe. Link to comment Share on other sites More sharing options...
caschmidt Posted November 18, 2008 Share Posted November 18, 2008 My sister owned my 01 gt before me and it had a similar problem. Piston #3 was misfiring. I believe it got new spark plugs and that was the end of it. It had about 70k on it btw, is ur gt manual? how many miles? Link to comment Share on other sites More sharing options...
jonklein611 Posted November 18, 2008 Share Posted November 18, 2008 New plugs is a cheap and easy possible fix to misfire issues. Link to comment Share on other sites More sharing options...
Bdubs Posted November 18, 2008 Share Posted November 18, 2008 If it is throwing 2 separate CEL codes, those problems should be resolved first. Bad plugs won't through a KS or Cat. trouble code, although it may be adding to the present issues. Link to comment Share on other sites More sharing options...
airdevil85 Posted November 19, 2008 Author Share Posted November 19, 2008 It is auto... 110K the plugs, wires and O2 sensors were replaced around 5k ago... I just put a knock sensor this afternoon but I cant drive it yet till the body work is done the front is all torn apart... Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.