What is this ???
 

Hello have changed my Stock manifolds to headers but there is a plug right
Under the passengerside header and the cable is broke what is that for ??

Re: What is this ???
 

You need a Haynes manual. I believe you are referring to the O2 sensor.

Re: What is this ???
 

O2 sensor is in the driver's side manifold. Probably not that.

The fan switch is in the pass side, between the back 2 spark plugs; and the knock sensor is at the bottom of the block on that side, right above the oil pan.

Re: What is this ???
 

Oki must be the fan switch

Had to remove the oli dipstick when
I changed the headers but now i Can find
The hole again you know where it is and
Whats the east Way to put it Down again??

Re: What is this ???
 

Re: What is this ???
 

Didn't look like my first response posted. So, here it is again if it didn't.
The dipstick slides down between two of the header tubes at an odd angle. It ends up closer to the AC/blower motor than you would think. easiest if you have an extra set of hand to help hold it from the top. You'll need to be underneath the car to get it back in. Here is an image of the block so you can see the location. Happy hunting.