my 75 toyota

On a 1988 pickup with a 22re where does the o2 sensor mount. The engine was replaced before i got it and no o2 sensor. On top of the exhaust manifold i have 2 football shaped plates directly off the head about 1 an 1/2 inches. I think that was for a air pump line or something . See no other places on manifold or pipe to cat. Thanks

my 75 toyota

Oh yeah i can be emailed at amd4me@suddenlink.net thanks again

xxxtreme22r

it's typically on the exhaust manifold.

toyota4x4907

'88 22res will have the o2 sensor downstream, under the cab, about a foot or two from the cat. '87 and earlier 22res have them in the manifold.

xxxtreme22r

toyota4x4907 are they the same manifold just with the sensor bung capped off?

toyota4x4907

Might be '86 and earlier with the o2 in the mani, dont remember exactly.

Yes, they are the same manifolds. The bung is cast in the manifold, just not drilled for it.

my 75 toyota

Ok so my manifold does not have that bung hole in it.

my 75 toyota

this is my manifold my engine is a 88 22re the manifold maybe from a 20r 1975 mod thats what its in

xxxtreme22r

I doubt if the manifold is from a 20r on a 88 engine, as the 20r and pre 85 22r heads and exhaust manifolds have different flanges and will not work with one another.

Pic is way to small to tell anything from it BTW.

my 75 toyota

thats what i am trying to figure out the head has the oval cut outs on top of each port. For the secondary air. But the manifold does not just the 2 football shaped plates on top