Check the fluid level & pump belt.
How do you change a power steering rack on vw golf mk4?
What fluid? Power steering fluid? What year?
Bottle in engine compartment on drivers side with green cap.
should be at the end of the lower radiator hose under the power steering pump
The newer VW's have a electro mechanic steering system so there is no power steering reservoir typically found in hydraulic steering systems.
In the power steering pump
It will just say power steering fluid only on the cap.
Your power steering is low on fluid .. Top it up
A 1991 VW Jetta's power steering reservoir is located towards the front of the engine bay. The unit can be seen placed on top of the power steering pump.
See Q: How do you remove Steering wheel lock VW golf mk2?
check power steering belt to see if its tight or fluid level and if both are ok then it could be the pump or rack.
Under the steering wheel. left side.