MulletMan

Ok my dad had been driving my 94 22re truck around and noticed it getting really loud like a cracked exhaust manifold. I went and inspected it and near the collector on the exhaust manifold theres 2 bolt holes and a hole and that part is missing. Anyone know what that part is called? How much should I expect to pay for this part?

INFINITY

go to a salvage yard i would guess about $25 for the header assembly. but just a guess

iamsuperbleeder

missing? like, a wide open hole is in the exhaust? the only real things that are close to as you described are;

1) the EGR valve tube; bolts to the exhaust manifold facing towards the fire-wall and pipes into the back of the head, and then over to the EGR valve on the intake

2) oxygen sensor; on my 91, there is only one sensor under the cab of the truck just before the cat and faces upwards. I think some of the laters models like yours may have two, in which case it will bolt right to the manifold as well sort of facing the driver's side inner fender.

that's pretty much the only things that will bolt to the exhaust it's self, so if it's not one of those two items, then I'm outta ideas...

got any pics?

MulletMan

Can anyone tell me what this part is called? No wrecking yards open this weekend and I need it asap so I have to buy one at parts store...also where does it hook up to? Any pics of one would be awesome

wolviak

I would also guess that is the mounting flange for the oxygen sensor. However according to the manual (for a '93) as iamsuperbleeder said it should be beneath the cab right before the cat. Perhaps there's a block off plate that cam loose.

just a 22re

yeah its still on your truck dude!!!!!!!!!!!! its called a o2 sencer it plugs in and then you bolt it in and from the pic it loks like you just rattled the bolts off i bet you truck runs like dog poo to aye? mine did when i broke the wire off all crapy untill 3,200 rpms when the cam kicked in then it spon the tyres lol hope it helps man!!!!!!

here look at this buddy
http://www.autozone.com/N,16100117//...eResultSet.htm

just a 22re

ok i just saw the year yeah that could be it to sorry i got an 87 same thing though you can buy one and bolt it in and just not plug it into anything or use it with a air fuel gauge maybe???

iamsuperbleeder

Yep, O2 sensor hole, but yours may not even have one. You would see the sensor hanging down if the was one. If not, then you just have the one under the cab and just a blockoff plate goes there.

My new manifold came with the whole for one with a blockoff plate on it. You could probably make one just out of some 1/4" steel... or rob an old O2 sensor from a junkyard Toy; wont have to plug it obviously, but it'll block off the hole.

More than likely the bolts just vibrated loose; the constant heating and cooling causes the metal to expand and contract and will work the bolts loose over time; I keep having to go back and tighten the bolts on my blockoff plate there. Some thread lock may solve that problem if you can get some that will withstand the heat.

just a 22re

yeah what he said but when i replaced mine i broke a bolt and its still tight lol one bolt and still not leaking i guess i got off luky with her again he he

bigt

how much did you pay for your oxy sensor for the 4 wire one on my 22re they want 150-200 canadian dollars... im not running one right now b ecause its my trail rig and i cant justify the price

iamsuperbleeder

I bought one off eBay for my truck not long ago; brand new in the box, Bosch, number 15711, 40 usd! Was a good find; normally go for 100-120 usd.

MulletMan

do they sell block off plates for these?

abecedarian

a muffler shop should be able to make one up for you.

also, do you have the O2 sensor further down the pipe, in front of the catalytic converter?

MulletMan

ill have to check tommorow...theres only 1 o2 sensor for our cars right? The trucks at my dads accross town. I assume it still has a 02...previous owner put the current manifold on and striped the head and had to recoil it..ill check otherwise ill go to the bone yard and try and get a old o2 to plug it