The exhaust nuts are 20 ft. Lbs. I couldn't find the ones for the intake but i would guess somewhere around the same, just make sure on the intake gasket you tighten from the middle bolts out so it doesnt bunch up in the center if you understand what i mean.
In a 1998 Jeep Wrangler, the oxygen sensor is located in the exhaust pipe. It can be found just below the junction of the exhaust manifold and the exhaust pipe.
The intake manifold, on your Jeep grand Cherokee, is located on the front side of the engine. The exhaust manifold is bolted to the engine.
It should be the same.. the standard jeep(left hand drive) the intake and exhaust are on the left side of the engine as well, so there is no need for a different manifold. so 99 % sure its the same manifold
Its a bit of a job because it is held on by the same bolts as the intake manifold, and the easiest way is to remove them both, otherwise the rusted exhaust bolts holding the tubing to the manifold is the worst.
Yes.
My manual says 20-25 ftlbs...
I can only assume that it is an older jeep. IT should be located under the intake and exhaust manifold. Straight down from the throttle body.
Yes, they share the same gasket and bolts.
Yes it will work. You will have to use a 4.0L exhaust manifold though.
A 1998 Jeep Cherokee does not have a mass airflow sensor. It uses a manifold pressure sensor, MAP, which is on the rear of the intake manifold.
Upstream is just after the exhaust manifold, and downstream is after the catalytic converter
it is located on the drivers side of the engine under the air intake manifold