Vacuum Actuators

[Northern Bongolow]

I believe the white one is for cold start and black is for the AC.

The one one the left, the black plug is for cold start below 10 regards c, coolant temperature, this gives the equiv to full choke and pulls up the throttle a long way on the pump to aid really cold starts. When the coolant temp gets up to 10 set c it turns off, but the white plugged one switches on via the ECU, this stays on until the bongo either reaches about 50 deg c of the revs go above about 950 revs, the ECU then presumes your either driving / revving it or its warm enough and up to temp. The white plugged one gives half choke type cold start giving a small increase in revs at the pump, it gives the same small increase in revs when the Aircon is on to compensate for the Aircon load.

[mikeonb4c]

This thread from last year serves to remind we've been to a place similar to this not long ago:

viewtopic.php?f=3&t=74214