I recently 'upgraded' our trusty year 2000 Focus Estate 1.6 Auto for a newer model .. a 58 plate 1.6 Petrol Auto Estate (32K miles).
Whilst the new car is indeed a more pleasurable drive, I do find it less 'sporty' than the old one .. but as I use it for running about town, I'm happy to accept the improved fuel economy over acceleration.
The only niggle I have is that the car 'vibrates' when idling/stationary (both in neutral and in drive).
I can feel this through the steering wheel, which is annoying .. and can 'see' the vibration in the side mirror(s).
Problem is that, as far as I can tell, it is not possible to adjust the idle speed ... everything is now in the hands of the engine management system (EMS) .. but I'm convinced just a small increase would improve matters, as when I switch on the airco, the expected increase in RPM (though hardly measurable on the rev counter) seems to the reduce the vibration problem (though this may be just coincidence).
I believe the idle speed is set by the EMS based on inputs from various sensors.
Does anyone know which sensors exactly ? .. so I can check they are okay .. or have any other ideas of things I can check which may be causing the idle speed to be slightly too low ?
I've had the plugs out .. which look okay (and all 4 look similar).
The car starts and drives fine. I've checked fault codes with my basic OBDII reader and none come up.