Thread: Scopes
View Single Post
Old 05-12-2003, 04:47 PM
stevebfl stevebfl is offline
Join Date: Mar 2000
Location: Gainesville FL
Posts: 6,844
Check this one out. It represents a graphic illustration of the secondary air test. The first part is an O2 sensor in closed loop.

It drops to minimum voltage immediately as the airpump is engaged. The engine management controller wants to see less than .04v. In this case it only made .135v. A new O2 sensor was the cure.
Attached Thumbnails
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician
Reply With Quote