a/c diag help on ford focus

[mtt.tr]

its been recharged in our ownership , has worked until very recently

i guess i can get a gauge , wanted to rule out elecs , cheap free fixes first

With gauges you can rule out the pressure switches at least

 

[steveo3002]

surely im not wrong wanting to check for broken wires /sensors etc before shelling out on a regas , might well have hit a stone and frigged the rad but wanted to check all the free i can

 

[mtt.tr]

surely im not wrong wanting to check for broken wires /sensors etc before shelling out on a regas , might well have hit a stone and frigged the rad but wanted to check all the free i can

I agree, and would certainly check the wiring.

If that checks out you can bypass the switches and then see if it runs.

I like gauged as in seconds of looking I know if I have an issue with the electrical side or gas side

 

[steveo3002]

so these switches are in the ac pipe work? a low and a high? just bridge the 2 wires and the clutch and fan should kick in ?

 

[voipio]

The fan operation is influenced by high side pressure, so doesn't come on until that pressure has increased beyond a set point. Not sure if the pressure sensors are simple switches or actual analogue pressure sensors. Shorting them may not give the desired effect.