Any power steering gurus out there?
Discussion
Really really frustrated!!. I had a problem with low pressure fluid pipes leaking so I replaced them all. I then had a problem with no power steering at all. I then changed the pump for a genuine ZF pump but only a Land Rover one. Still not working quite right. I then had the rack reconditioned. The problem I then had was that the steering went from great when engine cold to very notchy/stiff/intermittant when hot i.e after a motorway run.
The pump was changed again and the rack back out for a check at a different company. The rack was given the all clear. All replaced again and the same problem exists, even the reservoir has melted at the point where the return pipe fits ( and I mean really melted ). The reservoir has been replaced along with a full fluid flush. Same problem again.
Any ideas?? I am now very skint and completely baffled!!
Thanks in hope
Steve
The pump was changed again and the rack back out for a check at a different company. The rack was given the all clear. All replaced again and the same problem exists, even the reservoir has melted at the point where the return pipe fits ( and I mean really melted ). The reservoir has been replaced along with a full fluid flush. Same problem again.
Any ideas?? I am now very skint and completely baffled!!
Thanks in hope
Steve
STE VR said:
Really really frustrated!!. ... the steering went from great when engine cold to very notchy/stiff/intermittant when hot i.e after a motorway run. ...
Steve
I'm no mechanic and very new on the TVR train... but surely this reeks of poor oil choice... (I may have to get my coat)Steve
I wonder if you could pinpoint the problem somehow. Perhaps by leaving the car to idle for 30 minutes and then seeing if steering is stiff and clicky.
The pump is driven by the engine, so, perhaps, if the problem only occurs after high engine revs (eg motorway driving) it could be down to incorrect belt ratio - forcing the high pressure oil at too high a pressure causing the build up of heat.... if the heat is enough to melt the res, then it must be enough to cause the funny feelings.
Somebody will say if this is even a feasible hypothesis, I am sure.
The pump is driven by the engine, so, perhaps, if the problem only occurs after high engine revs (eg motorway driving) it could be down to incorrect belt ratio - forcing the high pressure oil at too high a pressure causing the build up of heat.... if the heat is enough to melt the res, then it must be enough to cause the funny feelings.
Somebody will say if this is even a feasible hypothesis, I am sure.
Could it be air locking... I'm assuming you are starting up and turning fully anti clock and then fully clock wise a few times to get the air out... if this isn't working is it worth undoing the copper pipes a tad to see if there is fluid there?.. is the fluid returning to the tank when you work it with the top off??... just had mine in bits and it took about 20 mins to get all the air out??...
phazed said:
Are you sure they haven't adjusted the pinion slipper too tight to try and eliminate play?
It may be ok when old and become notchy as the oil thins and the metal expands when hot?
I will ask the question but I feel the answer will come back that all is fine, whether it is or not. Sounds plausible though. It may be ok when old and become notchy as the oil thins and the metal expands when hot?
There is no air in the system and the fluid is nice and foam free. The pump also is quiet. Its the hot and cold thats baffling me as that is where the problem must be. The heat must be generating from somewhere.
Thanks for all the replies, keep em coming!
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