Evening all, my brother has left me with his ford focus to sort.

2001 1.8l petrol.

Issues are:

Cuts out intermitantly, basically dies when slowing down, dash lights come on and needs to be restarted. Then starts, drives as normal. Only happens now and then.

Could this be the Speed sensor Valve? seems to be a common suggestion.
The car is driven softly and short journeys if this makes any difference.

Next issues:

Engine fans cutting in and out regularly from cold onwards, and heater blower in the car only works on blower 4 nothing else.

Could this be the resistor?

Finally, and maybe coinsidence, but the car cut out the moment I turned off the A/C, didnt think to try it off and on again to see if it did it again, but thought I would mention it.

Did some searches but multiple answers and advice so thought i would list the exact issues and see if it is one thing for each issue, or if it could be multiple possible causes.

Any help is mucho appreciated