PAS pump noise???

[16v Matt]

When my valver has been running for while a whine appears alomost like the sound of an Eaton charger.   Now, I think I have narrowed it down to the PAS pump.........I think, lol

If I rev the engine there is a slight whine.  If I go lock to lock & rev it slightly at the same time it whines like a big whiney thing in a whining contest.   I take it the PAS pump is driven from the same belt as the water pump, so as the revs rise the pump is working harder?

Normal for PAS a pump on its last legs to be moaning, or have I totally mis diagnosed this??

[Judderi]

I think your on the right lines really. Id stick my head under the bonnet and rev away while listening.

[16v Matt]

Yeah will do, need a hand with that  though, my arms are'nt quite long enough to rev & steer while my heads under the bonnet!

[Brads MK2 GTI]

Well you could park it on full lock and operate the rev's with the throttle cable attached to the housing on the top of your engine?

[16v Matt]

Yeah could do, it only seems to do it when the steering wheel is being moved though.   The G/F can make herself useful later

Its the only time she'll be in the driver's seat with the engine running!

[Daddycool]

My power steering pump used to do this, turned out the hydrolic flued resivoir had cracked & was leeking slightly causing the pump to make nice super charger noises!!!!

[16v Matt]

Cheers daddy, I'll be checking it tonight.