Elvota

Engine: V6, 3.0, '91

I have two vacuum lines going into a "switch" at my power steering pump. I understand that this effects idle at full turn left or right (at least I think I understand this).

My question is how does one determine which line on the switch is for in, and which is for out? Does that make sense? I disconnected the lines at the other ends from the pump by mistake before marking them.

Thanks

Marc

I don't think it matters, it's a flow through kind of thing.

yotamanbill77

On mine the hose closest to the front of the engine goes to the power steering port closest to the front, the other goes behind it and runs across the head to the middle of the intake

93 yota pickup 4x4 ext cab

phorensic

Just disconnect it. 33's, 4Low, full lock on the steering, bound up driveline, disconnected vacuum idle up lines, no problem here. If you had 44's, yeah it may be a problem. But the idle is high enough to be OK.

4Crawler

iTrader: (3)

On in or out on the p/s VSV. It opens under high p/s fluid pressure and closes under low pressure. Passes vacuum from one side to the other.

Yoda

Yup. its just an "on-off" valve. It doesn't matter which hose is where.

Elvota

Guess that's why it's not marked

Thanks