ctravis595

The last few years, despite the engine running strong and the compression testing well, sometimes after cruising the highway, if I come to a stop the air/fuel ratio will read lean for a few seconds. Running lean at idle is not really harmful when the engine is not under load however I do not believe this to be normal behavior

I was shocked to find technical documents mentioning replacing 2001 Bosch 2.8 ecus for this exact problem, once the car comes to a stop it will idle roughly for a few seconds due to a lean condition. all the document says is “to replace the ecu” and gives a list of ecu’s affected, however mine was not on the list

was wondering if anybody else had any experience with this... I believe my problem to be mostly related to spent primary o2 sensors giving a bad reading after they’ve been heated up during cruises but the subject still intrigued me