All I did after the knock sensor lead was repaired was a reset for the code 32 and then a reset adaptation to avoid possibly waiting for the "10 trips".

Spent some time today checking all the vac lines - all hold vacuum and none of them affect the O2 sensor once reconnected (using Arthur's test).

Still need to check around the manifold and injectors for a leak - will use some carb cleaner and the O2 sensor tomorrow.

I am also going to re-clean the throttle flap with the carb spray to be sure its
closing off cleanly (re the wobbly idle).

Zafar, I did just check the intake flap - you are right it does get activated at about 4k RPM. I thought the flap was mainly meant to increase low end torque while closed?

Do either of you see a definite step in power at 4,000 RPM after a "dip" at 3.5k or so? (the other E320 I drove just climbed in power linearly).

Once past the 4k mark, mine howls strongly to slightly past the redline on full throttle before changing up (although I rarely treat it that way).

__________________
Regards,

Steve

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1995 E320 Coupe (125.052 104.992 722.369)