2004 RX 300 S-EL

[Lex Loofa]

Anyone know what the small solenoid valve is at the bottom front of the engine just behind the front X member, slightly to right of centre. It has 2 6mm plastic pipes to it. I have just changed the pipe attached to the X member that’s near to it, which is a manifold for the auto box cooling. The solenoid is chattering and maybe because I have the underslung covers off I can hear it, which normally perhaps I wouldn’t. I don’t think it’s anything to do with what I have done changing the manifold or that I have damaged it in the process. Any ideas please?

Thanks in advance.

[Big Jim]

 

If It's 17650G on the drawing, it says "VALVE, DUTY VACUUM SWITCHING" with a part No of 90910-12204   What it actually does I've no idea.