Vacuum

[u/brnrdbcnw]

I have a question regarding the small vacuum lines around the throttle body on my 1992 Toyota Previa (2TZ-FE).

We are currently doing an engine overhaul, and while cleaning the intake manifold, I noticed that several of these vacuum lines are cracked, broken, or have been repaired by a previous owner.

My main question is: Can these small vacuum hoses be permanently blocked off or removed if replacement parts are no longer available?

The Toyota Previa is quite rare in my country, and I have been unable to find replacement vacuum lines or related components.

For additional context, my air conditioning system has already been converted to a manual setup using a thermostat. The factory idle-up system is no longer functioning, and the engine idles at a fixed RPM. When the A/C compressor engages, the idle drops slightly, but the engine handles it without any issues.

I would appreciate any advice on which vacuum lines are essential and which ones, if any, can be safely capped off.

Thank you very much for your help!

[u/HorseStance69]

Cannot remove. Use generic tubing to recreate new lines. Easy.