bluebugeyewrx

help needed guys

2002 bugeye import

got held up in some traffic yesterday

car overheated and burst a pipe and dumped all the water out

fans not kicked in to cool it

cant seem to find a thermo switch on the rad ( had one on me last fiesta)

so where does the signal come from to switch the fans on

temp gauge works ok

just kept getting hotter and hotter then bang whoosh no water

many thanks for info when it comes

louis

Flatcapdriver

If it's anything like the problem I experienced, then try the following:

1. Start the engine
2. Switch on the air conditioning
3. The fan should automatically come on

If it doesn't...

Lift the bonnet (obviously turn everything off) and look down towards the bottom of the radiator on the right hand side - as you face the car. There is an electrical lead that plugs in at the base of the radiator which had come undone on my car and once reconnected, everything was fine. How the hell it came off is anyone's guess as it clips on and shouldn't disconnect.

Try that. If that doesn't solve the problem then I'm out of ideas.

bluebugeyewrx

ok m8

will try that today

many thanx

louis

bluebugeyewrx

help still needed cos the only wires i can find both go to the fans

there are no wires going to a heat switch

so how does it know to put the fans on

gcashmore

I hope you don't mind we are having the same problems as you with over heating, was wondering if you have sorted it out, if so could you help us

Regards
Denise

scoobyboy

they are switched on by the ecu at around 96 degrees Celsius

bluebugeyewrx

i will be able to check exactly whats happening monday cos i iam fitting a proper temp gauge with numbers on it. not just a few lines that dont mean anything

still tempted to run a wire to the fans to switch em on from inside the car

robf

Any follow-up to how this turned out? I am having similar problem with my fans not coming on.

-Rob

johnnyroper

what car you got rob?
not 100% sure but i think the fans are operated by the ecu from coolant temp sensor readings

robf

Hi,

It's a bit of mutt really. I have a US '00 RS with a '95 JDM sedan motor. I wired the swap myself and I agree the fans are ECU controlled (and can run low or hi speed depending on coolant temp, vehicle speed and AC switch).

Right now my fans don't turn on. When I hook up the green check connectors, the main fan goes on/off, so I know at least that one is wired correctly to the ECU. I replaced the coolant temp sensor, but the behavior is the same. I am going to build an OBD1 interface to monitor exactly what the ECU thinks the temperature is. I might have a bad wire or floating ground that is causing false readings (I also have cold starting issues as well, pointing me in the same direction).

I was doing some research and found this thread. Just curious if the original problem was ever sorted.

-Rob