Toyota Nation Forum banner

1 - 2 of 2 Posts

·
95 4Runner SR5 Auto4X4 V6
Joined
·
9 Posts
Discussion Starter #1
Does anyone know what the purpose of the two small hoses at the bottom of the power steering pump is for? For some reason I have to fill the reservoir about every 30 miles and I cannot find a leak anywhere? The hoses connect to the throttle body. Is it possible for the fluid to be pulled into the motor and burned during normal operation? I notice white smoke during startup coming out of the exhaust.

Thanks for your input,

Anton
 

·
Premium Member
Joined
·
6,403 Posts
The hose goes to the idle valve (IAC) on the throttle body. This valve controls idle and adjusts idle to compensate for power steering usage.

When the steering wheel is turned a valve in the power steering pump increases fluid pressure in the hose. The pressure results in increased idle.

The part of the IAC valve that connects to the hose may have a leaking gasket. The result is PS fluid is being drawn into the engine.
 
1 - 2 of 2 Posts
Top