Update on my heavy steering :-
I have a 2006 MX5 2.0 sport
The steering is heavy whilst doing manoeuvres, but not that noticeable while driving, this started off being sporadic but is now like this all the time, at also does not self-centre as effectively as it used to
The car has done 54,000 miles, I have owned the car for over 5 yrs and only used very infrequently
This is what I have checked or fitted over the last 8 months:-
The brakes are not binding
The 4 tyres are matched premium brands at the correct psi
I have changed the entire P/S fluid
A new P/S drive belt correctly tensioned
A low guaranteed low mileage P/S pump and then the steering rack fitted and 4 wheel tracking done.
The track rod ends and upper and lower ball joints disconnected, cleaned and re-greased all in perfect condition !
If I turn the wheels the rpm does not increase - New genuine Mazda P/S pump pressure switch fitted - I have tested the voltage to the switch - 11.67v. When I ground the wire from the P/S pump pressure switch the engine revs do not increase. However if I increase the engine revs the steering still does not get any easier
I did have a warning light, that when I plugged a reader in came up with P0550 Generic - current - power steering pressure sensor switch circuit, I erased the code and it’s not shown up again.
I now must admit defeat, I hate being beaten ! - I live in between M/C and Huddersfield, can anyone recommend a suitable garage ? thanks Ian