View Single Post
Old 02-27-2003, 09:44 PM
pesuazo's Avatar
pesuazo pesuazo is offline
Registered User
Join Date: Oct 2002
Location: Near Raleigh, NC
Posts: 580
Hi Tinker:
I believe that your car is running VERY Lean at a duty cycle of 78%, not richer.
The MB manual clearly states:
"leaner = high ON/Off Ratio"
Since you find no difference in performance, may be the closed loop is compensating with enough fuel such that the performance is not affected, since the compensation goes from 10% to 80% (according to the graph below). I do not know how much this stresses the system.
Experts like stevebfl can give a better explanation.
Attached Thumbnails
190e 16v problem ???-airfuel.jpg  
1999 Porsche 996 Carrera Convertible
1994 420E - SOLD
1986 300E - SOLD, what a car
609 Certified
Reply With Quote