If the rubber lacing is broken/missing from underneath the backside of the hood/firewall, fumes will be sucked in by the vents below the wiper arms. Absolutely deadly.
it is in the exhaust manifold,or exhaust pipe...
Follow the path from the exhaust port on the head. That will show you which is the exhaust rocker, which leads to the exhaust pushrod, which leads to the exhaust tappet.
on the exhaust
Stock Toyota exhaust system.
located on the exhaust manifolds
The oxygen sensor is located on the exhaust manifold and is the only item on the exhaust with wires going to it.
Just below firewall on exhaust pipe.
its part of the exhaust system
No it will not fit.
The oxygen sensor is usually mounted in the exhaust manifold pretty close to where the exhaust pipe bolts on.
If it's in the way, then yes. Don't dis-connect the lines, though. Tie the compressor up out of the way.
no the sohc and dohc manifolds are totally different.