ok i was replacing my sparkplugs today(witch i did wit a socket wrench and swivel also i didnt have to jack up the 87 camaro...yay me...lol) anyways on the drivers side i found this and idk what it goes to but my engine isnt throwin any codes check 3 times
http://imageshack.us/f/607/20110512131621416.jpg/
http://imageshack.us/f/263/2011051213164766.jpg/
http://imageshack.us/f/813/20110512131655899.jpg/
see the unpluged thing and that orange clip is the oil pressure sensor
and on the passengers side from lookin under the car between the 3rd and 4th spark plug is this
http://imageshack.us/f/801/20110512142903863.jpg/

idk what either of these things are so plz help me might be the whole reason for the chugging at low speeds that i couldnt figure out and this is off of my 87 irocz28 wit the 305 tpi

 

Think the green one goes to smog pump not positive though.

 

1st pic like you stated is oil pressure sending unit. For your car, it only serves as a backup fuel pump circuit in the event that the fuel pump relay is disables/malfunctions. Sometimes referred to as a fuel switch. You'll also have a oil pressure sender atop the china wall just to driver side on the distributor - that supplies the guage.

The connector unplugged I'm unsure of where/what it is. I'm looking to see what I can see - is this a carbed car or TPI? What are the wire colors to that 2-wire connector that is unplugged? Might be A/C pressure switch connector, manifold air temp sensor, or something else - wire colors will help trace it down.

The last pic is either the fan switch or the knock sensor - they look identical. But the fan switch is in the head, and the knock sensor is in the block - I can't tell from your pic what location is.

 

the smog pump is on the other side in the front this connector is in the bak

 

It's the fan switch.

KSs are much larger OD, and go into a much smaller hole in the casting.

Not sure about "chugging".

For the unplugged connector, what color are the wires? There is a plug present in seemingly the majority of these cars in that general area, with a pink/blk-stripe and a black wire in it (ECM fused ignition and ground); it is never plugged into anything; nobody knows what it's for; personally I suspect it was used for some production-line diagnostic or similar function but has no further use after the car has left the factory.

 

its a tpi and the wire colors are well look like red and black heres a pics
http://imageshack.us/photo/my-images...171118622.jpg/
http://imageshack.us/photo/my-images...171125785.jpg/

it might be the fan switch since the sensor is in the head
heres the pic
http://imageshack.us/photo/my-images...171233957.jpg/

 

Yep - last one def fan switch.

If you have dual fans, yopur secondary fan won't run without that fan switch being connected and working.

 

the connector that plugs into it is broken
and anything on the outher switch?

 

Go to just about any auto parts store - ask to special order a Dorman part # 85140 - that's the connector for the fan switch.

 

a disconnected knock sensor will produce "chugging". The knock sensor is the the blue wire.

 

Also, your secondary fan uses a pink/black wire along with a black ground wire. They should be on a pigtail and plug directly into your fan.