Engine Performance problem
1996 BMW Z3 4 cyl Two Wheel Drive Manual 111000 miles
passed the following:
(I tested extremely low for all of the above).
I failed NO (PPM):
15 mph (1982 RPM): 459 (allowed) 1065 (tested)
25 mph (1997 RPM): 746 (allowed) 278 (tested)
My first thought was cats, but the disparity between tested scores vs. Tested RPM has me thinking something else. O2? ECV?
Thanks in advance for the input.
By the way, drove on the freeway at 3500 rpm for an hour prior to the test.
Tuesday, July 7th, 2009 AT 8:18 PM