Power steering becoming hard at end points

[A80Avant]

I have been noticing this from my car.
Setup is a single vane pump after replacing the brake system to a vaccum servo.

The pump has been professionally refurbished a while back.

I have noticed recently that when trying to park the car and close to reaching the end points of the steering the wheel it becomes very hard and the pump I guess noisy.
I have checked the fluid level and tried to check for air in the system and it seems ok. I also had a leak recently through one of the hoses from the rack to the pump which was replaced with a good unit.

Is this possible that the pump is giving up?

[ManiacuV6]

What power steering fluid did you used ? Is it the FEBI greenish power steering oil in the green 1L bottle with red cap ?

[newsh]

I wonder if you had some dirt in the spare line that you fitted and this has blocked one of the little screens in the banjo bolts?

[A80Avant]

Thanks for the responses. I use the green stuff. Nothing different.
That theory of dirt could be plausible.. what is interesting is that when there is more RPM it works fine...

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[diesel des]

Weak pump.

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[Error404]

if more rpm helps then the pump is too weak at idle.

[A80Avant]

Is that something to do with its belt or just replace the pump altogether?

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[quattro-nick]

if the belt does not slip i would replace the pump.i have one for sale from a b2 type lol
or you can measurer the pressure with a mechanical gauge.
normaly on the identification plate from the pump stands the pressure

[Error404]

Vas if you need a "new" pump for your vac converted car let me know, I ca do you one like mine

http://www.s2forum.com/forum/showthread.php?p=808266&highlight=C4+pump+100+bar#post808266

[A80Avant]

Mine is Def. 100 bar but I need to check the part number on an old one

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[A80Avant]

Alex will sort me out. Thanks guys..

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