My Xantia's power steering comes on and off when I start the car and run it for the first couple of miles. As this is the time I am pulling out of my drive etc it is more noticable I suppose. The steering becomes so heavy I cannot turn the wheel with one hand, it feels like it has lost all power.
I will be working on the car this weekend changing the plugs aswell as a couple of bits underneath. Does anyone have any suggestions of the possible causes and checks I could do myself?
Thanks in advance, James
Powerless steering
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If this is a pre-anti-sink car (it probably is) then it will have the same single output pump and flow divided as the BX and XM - both of which are well known for PAS problems at higher mileages. Make the checks Dave suggests, but also change the LHM (preferably for hydraflush) and clean the filters. If this doesn't improve it after you change back to LHM (after a couple of 000 miles) then you need to look at cleaning out / overhauling the flow distributor.
LHM tanks tend to get messy especially if they are overfilled. Overfilling won't affect the performance of the system, underfilling will. Have you done the checks Dave Burns recommends - the pipe he is referring to is the pipe from the reservoir to the pump, and as its the only one under suction it can admit air and show no leak. If this happens then all manner of problems can arise.
If all these points are satisfactory then either the FDV is playing up or the pump is weak. The steering needs a high volume of LHM and a weak pump may well be able to maintain suspension and brake pressure with the aid of the accumulator but cannot provide the necessary volume for the steering.
Jeremy
If all these points are satisfactory then either the FDV is playing up or the pump is weak. The steering needs a high volume of LHM and a weak pump may well be able to maintain suspension and brake pressure with the aid of the accumulator but cannot provide the necessary volume for the steering.
Jeremy
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