Talk Morgan Forums Morgan Sports Cars Classic Morgans (pre-CX) EZ Power steering disaster, car almost undriveable

It was the Vauxhall astral system. Contact the original company they were very helpful to me, even if mmc stiffed them

Many thanks John

I thought on Vauxhalls the motor was down on the actual rack, rather than the column ?

Looked it up Jon and early Astra's had hydraulic rack PAS, engine then electric driven before adopting column electric. Multiple suppliers of this later type as well.

Sorry Richard I have no idea only that mine was the press car and then used by one of Charles daughters until he was deposed.

Thanks Keith. A little more info on the EPAS system factory fit on later 3.7 Roadsters, presumably Vauxhall derived and optional on Plus 4 of same era.

The electrical connections are relatively simple just four wires on matching connector. Main direct battery power via 40 amp fuse. Ignition switched activation via engine fuse 18. BCU supplied speed signal decoded from CANBUS, and ground. Interesting that its speed sensitive. I recall others complaning their's wasn't but maybe true of earlier versions . Below generic layout of column electric assist steering.

Mine's not speed sensitive Richard

I queried this with the Factory when it went in for some warranty remedial work (not steering related) and Mark B confirmed MMC's system is not speed sensitive or adjustable for level of assistance, but that the previous 'bought in system' was, via a propshaft sensor

I assume if we took off some of the footwell trim there may be a CE mark / maker label on the motor ?

Yep, there's some labels on the motor...wish I'd taken a close up during build

Same as my S1 Roadster. I found the issue was a cable coming out of the plug & socket on a box on the passenger side under the dash. It failed sometimes.
Here is mine

Thanks for heads up Jon. I did wonder despite our Roadsters being built only months apart if your PAS was the same as mine since I believe you fitted switch to interrupt EPAS control feed. When I tried the same by pulling control fuse the car was akin to my 60 year old Land Rover at manouvering speed and heavier throughout speeds up to 60+ mph. It was so uncomfortable to drive I put fuse back in after five miles.

I assumed the EPAS was speed sensitive since the four pin connector includes a feed from the BCU on a yellow/pink cable. This is commonly used to carry VSS speed signal and could be little else. The wiring schematic was drawn by MMC in late 2013 though so could have benefitted an earlier EPAS - EZ PAS maybe