I wish I had one
Join Date: May 2008
After experimenting and watching carefully my 33 this days, I'm to the conclusion that her might behave like this when idling for the rest of the time. I have tried 4 different engine temp management sensors, but the car idles rhythmic until 40-45*C until it warms a bit up and then when is supposed to put down the revs and lean a bit the mixture the anomaly shows up. Actually it does drop the revs down and it leans the mixture and this is when it starts to idle a bit strange. Before this happens the Air/fuel gauge shows only rich, then when engine reaches 45*C it starts to fluctuate lean-reach-lean and in this moment the idle gets a bit crazy.
I think it might be related to the Titania lambda sensor in my car. In fact, hotter it gets the better the idle gets. But this didn't happen with the wrong lambda I had before or even with no lambda at all. It happens just with the right lambda.
It happens only when idling, it doesn't have any problem when cruising, acceleration is great and no hesitations. Fires up in a second in the morning and never suffered to start up anymore after changing the fuel pressure valve.
Just the idle issue remains. Could this be normal for the boxer as everything is good (sensors, spark plugs+leads, no errors in the ECU and standard fuel mapping,good injectors and cleaned with ultrasonic, throttle body cleaned, ect,), or idle must be that rhythmical as a watch???
what do you guys think, it could be a connection with the oxygen sensor?
Last edited by Alfa33boxer; 03-10-11 at 08:58.