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PAS fault

pauljmcnulty

pauljmcnulty

Active member
Hi all,

I know I have a leak in my PAS, but it's started to fail intermittently. Which seems odd...

Sometimes it's fine, if a bit noisy on full lock, but increasingly it's not working for a short period, even on the move which is a bit disconcerting. It's due to go in for it's service in April, so I'm hoping to hold on until then topping it up occasionally, but it's not really driveable as it is. Is there anything simple I can do to fix it for a couple of months, or even is it worth dropping it in to a local mechanic to look at?
 
That's weird, how can it be intermittent?????

Is muck in the pump?

Might be worth draining it and filling with new stuff?
 
Hi Paul,
Air in the system? Maybe worth changing the fluid and bleeding it? Where's your leak from?
Just guessing though.....
HtH
 
That's weird, how can it be intermittent
Click to expand...

My thought as well!

Say I'm going round a RH bend, the steering will be fine, then go really heavy, then seem fine when straightened up again. Sometimes at parking speed it works, other times it "judders" a bit as it's, I guess, under pressure?

Where does it drain from, sounds worth a try, and is it easy to bleed? [8|]
 
ORIGINAL: pauljmcnulty

Where does it drain from, sounds worth a try, and is it easy to bleed? [8|]
Click to expand...
There's no bleed point as such, but you can use a turkey baster or similar to remove most of the system's fluid from the reservoir. Add new fluid, then to bleed the system you run the engine and turn the wheel slowly from lock to lock a few times. If you drive the front wheels on to a couple of unwanted glossy magazines before you start, it makes the wheel turning easier.

However - before you get to that, if there's air in the system you will be getting frothing or bubbles in the reservoir, so just try watching it while someone turns the wheel back and forth. Then if air's getting in, you have to figure out where - usually the seals on either the pump or the rack. There's loads of threads on this on the Rennlist forum, worth a look there.

You mentioned there's a leak? if you can figure out exactly where from, it might answer some questions.

Just another thought - is the belt tight and in good nick?

Good luck!
 
Jack the front up, remove the cap off the bottle and turn wheels from lock 2 lock a few times. U can drain the system from the banjo bolt at the pump. Less messy then at the bottle and lower so ur get everything out the pipes.
 
Just another thought - is the belt tight and in good nick?
Click to expand...

Belt was new last service, no squealing from it to suggest it's loose?

Will have a play around on Saturday, but I don't want to break it before Rutland! [:eek:]

I don't know where the leak's from, what's the capacity roughly?
 

ORIGINAL: pauljmcnulty

Just another thought - is the belt tight and in good nick?
Click to expand...

Belt was new last service, no squealing from it to suggest it's loose?

Will have a play around on Saturday, but I don't want to break it before Rutland! [:eek:]

I don't know where the leak's from, what's the capacity roughly?
Click to expand...

i would of guess no more than one and half litres ,may get away with just a litre .
 
usual leak points are the low pressure return line to the reservoir my old 924S leaked from the joint and as the tube has spiral wrap around it the fluid leaked down inside and looked like it was coming from the bottom. I juts removed from the resevoir cut the end off the tube and remade the joint. But your issue sounds more like air getting into the system like has been said try draining it and refilling you could always try one of the sealing fluids that are about for PS systems not sure how good they are but it might get you by until the service.
 
Well, the snow's stopped so I had a look underneath, and it's not clever. The PAS pump is loose, with only one bolt (without a nut even) holding it on. Worse than that, it's only stopped from coming away completely by the rad hose in front of it, which is rubbing through as the belt turns.

I'm trying to find a garage open, but might be at Rutland in a van. I havent got any bolt or sleeves to match the sizes on PET, and even so I can't get under it well enough on the jack to do anything. [:mad:]
 
Should be an easy fix, nut bolt and spacer.
Click to expand...

Of course......NOT! [:D]

Bolt at back's gone, with spacer, so not much use even if I could get everything apart. Plus, the movement in the pump has snapped the strut. That was the vibrating, with the pump flailing around and the tension on the belt varying.

Plus, the hose in front is nearly through, so not worth risking a long drive.

Better to find out now that halfway to Rutland.

So, any ideas if the strut is worth buying new, or getting someone to find me a used one? Bolts and sleeves are standard.
 
Get some self-amalgamating silicon tape from Halfords or similar and wrap it around the hose. Get a used tensioner bar and give it a clean up and a lick of hammerite. Job done, £20 all in.
 

ORIGINAL: Eldavo

Get some self-amalgamating silicon tape from Halfords or similar and wrap it around the hose. Get a used tensioner bar and give it a clean up and a lick of hammerite. Job done, £20 all in.
Click to expand...

Exactly
 
Get some self-amalgamating silicon tape from Halfords or similar and wrap it around the hose
Click to expand...

Can't see the garage doing that to a hose that's already nearly cut through, and I'm not sure I'd trust them if they did! Or am I missing something here and the hoses are horrendously expensive or something?
 
I can't say the lower rad hoses are that horrifically expensive (I changed the lot of them on my last S2 :)).

Fingers crossed you can get it sorted out soon (even it is not for Rutland!)
 
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