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[terry paget]

Astra H 1.6 manual 2006
I know it's electrical; I thought an electric pump drives an hydraulic system similar to the Omega system, but is more efficient as it only operates when needed. Haynes infers it is all electric, if so I don't understand how it works. Please enlighten.

[Doctor Gollum]

Motor drives the steering column

[terry paget]

Thanks Doc. Still not clear how it works. In Haynes 2004-2008 it says system is electro-hydraulic, ECU is advised by ABS (speed) and a steering angle sensor. Hydraulic pump, reservoir and motor are mounted above the rack and pinion steering.
Haynes 2009-2013, however, states that electric power assisted steering is fitted. It may be the same system, but the description is different, more vague, and does not use the word 'hydraulic'.
I only ask because today my son Ben, with his son Tom (5 last Friday), got into their Astra to leave my house, but came back complainng that his steering 'did not work'. I got in the car and tried it, suspected the power steering, and with engine running tried to turn the steering. Initially the steering was very heavy, but gradually it got lighter and retured to normal. I handed the car back to my son, who drove home in it.
I hope Tom was impressed.
Are the 2006 and 2009 systems identical?

[Andy B]

Thanks Doc. Still not clear how it works. In Haynes 2004-2008 it says system is electro-hydraulic, ECU is advised by ABS (speed) and a steering angle sensor. Hydraulic pump, reservoir and motor are mounted above the rack and pinion steering.
Haynes 2009-2013, however, states that electric power assisted steering is fitted. It may be the same system, but the description is different, more vague, and does not use the word 'hydraulic'.
I only ask because today my son Ben, with his son Tom (5 last Friday), got into their Astra to leave my house, but came back complainng that his steering 'did not work'. I got in the car and tried it, suspected the power steering, and with engine running tried to turn the steering. Initially the steering was very heavy, but gradually it got lighter and retured to normal. I handed the car back to my son, who drove home in it.
I hope Tom was impressed.
Are the 2006 and 2009 systems identical?

Astra G was electro/hyraulic Astra H is electric only

[Doctor Gollum]

The electro hydraulic system is pretty much identical to the traditional one... Only difference is that the pump is electric rather than belt driven... Pump is moved to the rack for convenience/packaging purposes

[Andy B]

The electro hydraulic system is pretty much identical to the traditional one... Only difference is that the pump is electric rather than belt driven... Pump is moved to the rack for convenience/packaging purposes

Pump or motor?

The electric assisted steering on my Smarts don't have a pump (just been to look at my ML and that appears to be electric only too which is probably how it steers itself when self parking)

[STEMO]

Motor on the rack

[STEMO]

That's the J, by the way.

[dave the builder]

astra H is electric pump to pump hydraulic oil on most models same as astra g
astra F had a belt driven pump like the omega

Astra H like this clicky



if the rack or pipes leaks ,the reservoir may need topping up short term

remember you have a spares car Terry

[STEMO]

I knew the astra expert would be along 

[Doctor Gollum]

The electro hydraulic system is pretty much identical to the traditional one... Only difference is that the pump is electric rather than belt driven... Pump is moved to the rack for convenience/packaging purposes

Pump or motor?

The electric assisted steering on my Smarts don't have a pump (just been to look at my ML and that appears to be electric only too which is probably how it steers itself when self parking)

Motor driven pump assembly

[dave the builder]

if no leaks, there is a relay somewhere and a sensor on the column 

I knew the RUSTY VAUXHALL  expert spanner monkey would be along 

FTFY 

[STEMO]

if no leaks, there is a relay somewhere and a sensor on the column 

I knew the RUSTY VAUXHALL  expert spanner monkey would be along 

FTFY 

Aye, well, you'd be f****d with the wife's K, it's an electronic nightmare. 

[STEMO]

And it's not rusty.....yet.

[dave the builder]

And the screenwash is rusting the interior floor and electric gubbins  away nicely

FTFY