Abdullah

iTrader: (2)

Hello,

Is the upstream O2 sensor for measuring the A/F ratio of the burnt A/F mixture in the engine and to be tightened at the lower side of the exhaust manifold?

and

Is the downstream O2 sensor for measuring the efficiency of the catalytic converter and to be tightened after the rear part of the catalytic converter?

Thanks for help.

G Atsma

Correct on both counts.

Abdullah

iTrader: (2)

OK.

Thank you for help.