While fixing my tps I noticed this vacuum nipple capped off. Is this supposed to be capped off?

Here is a pic or 2, if you need better ones as to location, let me know. Its near the intake pipe as seen in pic.

 

Yes, I think that was always capped on my S4 NA. You can also get rid of the cold start assist valve next to your finger. There's an old TSB to remove it.

 

Just cap off both ends?

Will this then not use the cold start assist if I do that? It is cold here in vt. Like -20 and below that at times.

 

You can use a small block off plate, or remove the vacuum and coolant lines. It injects coolant into the engine when really cold, but it apparently never actually worked.

JUN 90 24. SUB-ZERO STARTING ASSIST DEVICE DISCONTINUED, ENGINE MODIFIED

 

Thanks, gives me something to do...

 

Took out the sub zero assist device today.
Only PITA part was 1 of the cc mount bolts. Made it easier to remove as there was a ton of crap under the coolant tank for the assist tank and where it slides off the mount. I had to use some penatrating fluid after I unbolted the mount for it to come off, it wouldn't slide off it.

There is also a cap on the line to the manifold that you can use to cap it off with.

Gave me a chance to replace a few vacuum line too.

Thanks all.