[Closed] Power steering wierdness...

Power steering fluid low or perhaps the pump is on the way out?

Was the 3 point turn immediately after starting the engine? I have noticed with some cars that if you make full-lock movements immeidately after starting the engine the steering can feel heavy.
Once underway it then feels fine.

yes, went to full lock as straight after starting engine.

Will try to check fluid later.

The pump on our mini does that - something about carbon build up in the motor brushes etc. It's a known fault on minis of a certain age but the symptoms you describe are just like that.

Worth checking the easy things like fluid level first before we go all Doom-and-gloom about it though.

Is it a Vauxhall Insignia by any chance?

I had this fault a few weeks ago. Less the flames!

http://www.bbc.co.uk/blogs/watchdog/2012/05/vauxhall_insignia.html

The pump in my focus died. I had a few months of very occasionaly loss of power steering, sometimes if I just stopped and restarted the engine it would come back on, other times it wouldn't.

Eventually it just refused to come back on (fluid was fine) and it had to be replaced.

You could try checking your tyre pressures...low pressure in one of your front tyres might make the steering feel heavy.

If you rule out the hydraulics it may be worth having a prod at the electrical connectors to the power steering. I had similar symptoms that turned out to be caused by the power steering not always getting the signal that tells it how fast the car's going and therefore how much assistance to provide.

I know we have all assumed is hydro, but what car is it as alot are electric motors now.

Anyway, it could also be sticky servo valves. If you can get to them, a clean up may help - this happened on one of my old cars (i think it was the ovlov..) but then hitting it with a hammer sorted most issues..

It is a 2005 Toyota Corolla Verso diesel.

At that age I'd be more looking at a slightly slipping ancillary drive belt. Just slipping enough whilst the oils cold in the system but not enough to get the alternator squealing.

Try replacing the power steering fluid (assuming its hydraulic and not electric). If not it could be the pump is on its way out. My old Focus did this for the whole 5yrs of ownership, so though it might be the pump on its way out, it might last for as long as you need it to.

But old fluid can cavitate or become compressible which may cause dead spots in the action - so a fluid replacement is relatively cheap and might cure the issue.

If it's got 'lecy PAS (either pure electric or electrohydraulic) if the battery voltage is low, the system turns down the assistance at low speeds to help save power. If you car had been parked for a while and it was a cold day then this can occur occasionally even with a decent battery. If it's pure hydraulic and there was no hideous screeching (belt slipping) then it is possible for the pressure release valve to stick open until the pump warms up a bit.

The GF's citroen had a similar problem, first thought it was the torque sensor on the steering shaft. Turned out to be the speed sensor on gearbox on the way out.

Thanks for the input folks.

checked tyres and they are equal pressure.

checked power steering reservoir at cold and when warm and level was between appropriate Max and Min values. No obvious signs of leaking from reservoir, but couldn't get underneath to check from below.

Will keep an eye on it - might try my local garage to see what they would charge to change the fluid and give it a once-over.

thanks again.

If you had a Fiat I'd have suggested that it was because it was a Fiat. We hired one in Menorca and it had this 'easy park' system where the power steering got a boost when you were moving slowly to help you park.

In reality, as you'd expect from such an awful manufacturer, it made the car incredibly dangerous. Anything up to 40mph (and on Menorca you never make it much past 40mph anyway) the thing would boost the power steering when the car was turning which would simultaneously make it feel like the front wheels were sliding as well as causing the front end to unweight. The car scared the hell out of me.

you'd expect from such an awful manufacturer

🙄
Hysterical bullshit.

My old Saxo had electrohydraulic, it would play up now and again. Hitting the pump with a hammer would usually get it working but then one day it just died. Luckily only a couple of miles from home too.

If the steering is electric / hydro electric then a alternator thats on the slide can give occasional drop outs of the steering assist - theres a certain voltage the steering requires and the alternator can be hovering just above that and a slight dip can upset things.

[i]Hysterical bullshit. [/i]

real life experiences. Every one I've ever driven has failed in some way.

edit: And that includes the ferrari's I've driven.

edit: And that includes the ferrari's I've driven.

*swoons*

I wouldn't get too excited. They were both a pile of crap. Bits fell off one and the other had some petrol issues. I had to take my shoes off to drive both.