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[chrisgixer]

The idler has a rubber sleave within it which wears and causes play vetically. There's nothing in there that could bind, no bearing or ball joint. However if it is worn, it could give some very odd sensation through the steering if its pulled one way then back the other.

But again, I can't see how temp could affect its play, although it does get hot as its right next to the pre cat on the exhaust.

Iirc there's a video of a failed idler in the maintenance guide.

[05omegav6]

Did the pump ever get changed

The thicker viscosity of the cold fluid could easily highlight an issue with the pump...(or the box for that matter).

Lhd box will be a shit to swap out... Abs pump, brake servo and the 246 exhaust is nearer the bulkhead. Alot of work if the pump hasn't been looked at first.

[kcl]

Did the pump ever get changed

The thicker viscosity of the cold fluid could easily highlight an issue with the pump...(or the box for that matter).

Lhd box will be a shit to swap out... Abs pump, brake servo and the 246 exhaust is nearer the bulkhead. Alot of work if the pump hasn't been looked at first.

Pump is not a suspect because it only pumps and does not know which direction I'm turning.

Just read this thread http://www.omegaowners.com/forum/index.php?topic=117976.0 and now I think I have found the fault; if ABS ECU or sensor (in my case one of the fronts?) for some reason loses speed signal the steering would go heavy? So, I'm now looking for a broken cable or changing one of the front sensors? Will try to connect my not-to-be-discussed-here- code reader and see live what it says (if I can replicate the situation where it goes heavy/stiff spot)

[Kevin Wood]

An easy way to eliminate anything electrical is to remove the servotronic module and see if it still has tight spots. The steering will be heavier overall, of course.

This sounds like a repeat of Chrisgixer's steering box failure, to be honest.

[chrisgixer]

An easy way to eliminate anything electrical is to remove the servotronic module and see if it still has tight spots. The steering will be heavier overall, of course.

This sounds like a repeat of Chrisgixer's steering box failure, to be honest.

What's bothering me with this fault is the temp aspect.

Why would temp be relevant to such a clunky great lump like a steering box?


The fault on mine was throughout steering movement for a turn. Left or right didn't matter. Usually slow speed between 10 and 20mph, with a generally less assisted feel to the steering at all times.
As it was most noticeable turning into my road, it was usually at the end of a journey, so all warmed up.

Another box sorted the randomness but I still feel something's not quite right, which I'm blaming on top mounts which I know to be slightly pitted, but don't know for sure.

[kcl]

Temp aspect is also why I started to think about the ABS system; ABS ECU is in quite hot place. Will try to see if the plug is ok etc. Also have now sourced a "new" box which I will be changing any way (just for the fun of it!  And I will be learning something also while doing it)

[Kevin Wood]

The power steering pump and box are the only components involved that get hot, though. None of the suspension joints will behave any differently when the car is hot as their temperature doesn't appreciably change. PAS fluid will get less viscous when hot, pressure may drop off, clearances within the steering box will change, etc.

Given that we can easily eliminate any electrical influences (and with it the ABS ECU), that is what we'll be left with (assuming the problem is still there with the servotronic disabled).

[kcl]

The power steering pump and box are the only components involved that get hot, though. None of the suspension joints will behave any differently when the car is hot as their temperature doesn't appreciably change. PAS fluid will get less viscous when hot, pressure may drop off, clearances within the steering box will change, etc.

Given that we can easily eliminate any electrical influences (and with it the ABS ECU), that is what we'll be left with (assuming the problem is still there with the servotronic disabled).

You mean by pulling the ABS fuse and try it then?

[Kevin Wood]

The power steering pump and box are the only components involved that get hot, though. None of the suspension joints will behave any differently when the car is hot as their temperature doesn't appreciably change. PAS fluid will get less viscous when hot, pressure may drop off, clearances within the steering box will change, etc.

Given that we can easily eliminate any electrical influences (and with it the ABS ECU), that is what we'll be left with (assuming the problem is still there with the servotronic disabled).

You mean by pulling the ABS fuse and try it then?

Could do, but I was thinking of just pulling out the servotronic module.