Vauxhall Frontera 2.2 X22XE 1997 - High emissions, CO 7.47%, HC 413ppm, Lambda .80 #

Posted by Martin Cummins on March 13, 2009, 10:26 pm

Re: Vauxhall Frontera 2.2 High Emmisions CO High, HC High

Posted by Gwyn Williams on March 14, 2009, 11:49 am, in reply to "Vauxhall Frontera 2.2 High Emmisions CO High, HC High"
Gwyn Williams

Re: Vauxhall Frontera 2.2 X22XE 1997 - High emissions, CO 7.47%, HC 413ppm, Lambda .80 #

Posted by Paul on March 15, 2009, 1:07 am, in reply to "Vauxhall Frontera 2.2 X22XE 1997 - High emissions, CO 7.47%, HC 413ppm, Lambda .80 #"
Paul Howd

Lambda at 825mV is telling you that it is rich. Which you know! Changing the Lambda sensor wont change anyting cos it is working just fine (the fact that it switches lean on acceleration confirms this) Look for WHY it is rich! MAF/MAP sensor, CTS, etc (Cant remember off hand, but this might be a MAP system), look for faulty MAP/MAF sensor or blocked/split MAP sensor pipe. (Your osciliscope is your freind.) Failing that, look for air leaks or anything else that might be feeding false data to the ecu HTH Paul