vr6 rack change now noisy pump (video clip added)

[zak 0]

I changed the steering rack on my vr6 and now the previously silent pas pump is now noisy.

 

After the rack swap i topped the fluid up and turned the rack from lock to lock a few times to circulate the fluid and topped up once again . Ive let the car run but the noise does not go away. Its not so much a high pitched squeeling that you get with a belt slip its slightly different. I'll post a clip later.

 

Any advise on why its noisy all of a sudden?

[Supercharged 2]

Will be air in the system, i'd see how it goes over a few days, you might see the fluid level drop an inch or so as air works its way up.

[MK1Campaign 0]

Mine was noisy for about 20 minutes after. Vince said its air in the system.

[zak 0]

i'll run it for a bit longer and see how it goes.

[zak 0]

This is the noise that its making, it gets louder as i turn the wheels

 

[zak 0]

i ran the car for another 10 minutes or so and the noise didnt go away. I havent driven it yet could this be why?

[Supercharged 2]

Yeah just drive it mate... I reckon it will be ok after a few days

[davidwort 0]

you need to keep working it lock to lock to get all the air out, it can take quite a few turns, I did it with the wheels off the ground to save chewing the tyres.

[zak 0]

cheers david i'll give that a go, even though my tyres are worn on speedies i was still cringing. Ideally i want to sort out the noise so i know the pump is ok before i put it back on the road and get it tracked up

[davidwort 0]

there's 3 ways you'll get PAS related noise AFAIK

1 pump pressure valve stuck - you'll hear a constant pumping whine from the pump (even with no steering input) and the fluid will bubble round like mad in the reservoir, eventually the PS pressure hose from pump into rack will leak

2 belt slipping

3 air in the rack, which should simply work it's way out with use

[zak 0]

The noise has gone, didnt get a chance to drive the car but it had been parked up for a few days and when i starte it yesterday there was no noise. I guess the air must have worked itself out.

 

Thanks for the help