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Power steering issue

Posted: Tue Feb 18, 2014 10:20 am
by bilsten
Hi all,

I have a problem with the speed sensitive power steering on my 406 v6 from 2000 (235 000 km).
The loss of power steering was gradual, and especially noticeable at low speed when trying to park. I am not sure, but the power steering seems to improve after 15-20 min of driving - and the fluid reservouir is filled.

I have tried to turn the wheel to full stop and listened after the power steering motor bypass, but it does not come with a high characteristic sound as on my friends v6 from '99. There seems to be a sound but it is high pitched low volume squeal.

There is no warning lights in the dashboard, but the car also appears to be leaking engine coolant, even though I think that the problem is not necessarily related.

I suspect that the power steering motor is defect, but perhaps you have some other thoughts or ways of troubleshooting the issue :?:

Re: Power steering issue

Posted: Thu Mar 20, 2014 2:40 pm
by midsmike
Did you sort the problem out

Re: Power steering issue

Posted: Thu Mar 20, 2014 5:47 pm
by 8Jb9
No, he hasn't sorted it out yet.

PP2000 shows no faults. The plan is to hook up a pump from a donor-car and see if it works. An alternative could be to run a pressure test, but the equipment is not available to us (note - 100bar!): ... ed0ck3.htm

Re: Power steering issue

Posted: Fri Mar 21, 2014 12:38 pm
by mjb
Check the crankshaft pulley hasn't separated - it's two bits with a bit of rubber separating them. The rubber can disintegrate causing the pulley to slip on itself. Simple check is to paint a line across it, from centre to edge and see if it's still just one line the next day

Re: Power steering issue

Posted: Fri Apr 22, 2016 5:51 pm
by 8Jb9
This is a very old post, but for the sake of anyone else having the same problem:

The variable valve on the power steering rack did not work any longer. The solenoid resistance was out of spec (open circuit, I believe). Replaced the little valve with one from Ade, and all was well.

Re: Power steering issue

Posted: Thu Jun 16, 2016 8:02 am
by NinoB
Hello, I dunno if anyone can help me, my steering wheel is too extra soft and too sensitive, if am travelling it will become worse, please what is the problem? What can I do?

Re: Power steering issue

Posted: Wed Jun 22, 2016 10:25 pm
by 8Jb9
Hi Nino.

We need some more information.

1) Which model (engine, etc) do you have?
2) What do you mean by too sensitive? Is there any play in it?
3) Is it something that suddenly appeared?

Re: Power steering issue

Posted: Thu Jun 23, 2016 7:08 am
by steve_earwig
Sounds like another variable steering gone too light. How did you diagnose yours?

Re: Power steering issue

Posted: Fri Jun 24, 2016 8:15 am
by 8Jb9
In our case it went heavy, although you're right. I suspect a friend's variable has failed light (doesn't feel right).

In this particular case I measured across the solenoid and found that it was an open circuit, I believe.

If the variable power steering fails in sort of has to be one of two things:
-The solenoid can't move
-It can move, but it's not getting the right signal

I seem to recall that I saw a graph of applied voltage vs speed at some point - could be worth looking at for our unfortunate gentleman?