v6 rad fans not working

[bigmal]

mazda bongo v6 radiator fans not working after replacing temp sender switch
any suggestions welcome
fans where working before switch was replaced
how can i check the fan temp switch

[steviebongo]

normaly they come on when the air con is ,well on most cars that is .quik and easy check.

[Jon 41]

The fans recieve two seperate feeds, one from the coolant side and one from the air con side, so it isn't a conclusive test switching the aircon on. I had the same red herring when trying to diagnose a problem on my aircon, the fans worked on the coolant side but not on the aircon side. Turned out to be the fans.
View topic
http://www.igmaynard.co.uk/bongo/forum/ ... 2d61ed33c5

[Jon 41]

Bridge the two wires on the radiator fan switch with the ignition on and the fans should kick in, if not, with the fan switch still bridged check for a feed at the fans (making sure your aircon is switched off). If there is a feed at the fans then it is your fans that are at fault.
Also check the fuses under the bonnet marked fan1 fan2.

[kelv]

Put the old switch back on ?

It was all working before you replaced it after all
Maybe it's not that simple,,,,,,,,, but it might be


Best of luck

[bigmal]

the fans work when the switch is bridge , but there is no heat coming into the cab , could it just be a airlock in the heater system causing the fans to not work , if i lift the wiring of the fan thermo switch slightly the fans work ,but if i push it down all the way the fans stop working

[Jon 41]

It sounds like you have an air lock in the heater matrix but also a possible break in the wires to the fan switch. Japanese wiring notoriously thin . Follow the instructions on here for bleeding the cooling system, but locate and repair that break in the wiring first.
Good luck

[missfixit70]

the fans work when the switch is bridge , but there is no heat coming into the cab , could it just be a airlock in the heater system causing the fans to not work , if i lift the wiring of the fan thermo switch slightly the fans work ,but if i push it down all the way the fans stop working

Are we talking about rad fans, heater fan or scavenge fan that you are trying to get working?

[bigmal]

its the rad fans which are not working ,many thanks for all the suggestions will try them today
and report back

[missfixit70]

If you suspect you have an airlock, then you need to bleed the system asap. when you say there's no heat coming into the cab, is the heater/ac fan itself blowing ok?

[bigmal]

have refitted old temp switch fans now working , are the temp switch on a diesel bongo set at a diffrent temp to the petrol v6 bongos or are they all the same settings ,does anyone know

[missfixit70]

I'd think they're different, pretty sure they run at different temps, I'm sure some of the v6 guys'll be along soon.