ReVenGe

(94 cx with d16z6 motor)

Cars overheating from radiator fan not turning on. Fan is functional (connected to 12v source and it turns on)

I know i had an aftermarket fan switch installed a long ass time ago... to make it turn on at a lower temperature..

anyone have any diagrams where to start looking?

ReVenGe

bah.. no one has a quick diagram on hand?


found. it.. on thermostat :doh:

Running925

yep, on thermo housing.

and if you pull the plug off and loop the two wires together with a short bare jumper wire or a paperclip as a test. It should kick the fan on if the key is in the on position. This will usually show you if your sensor is bad or not.

06gsxrman1000

if that doesnt work the relay is under the hood on the right hand side or left lol depending on which way you look at. Either way its on the pass side

A-series

That sensor/switch is called the thermoswitch, just makes it easier to use that term if you end up looking for a replacement or search for info on it.

cruzalekz

ect input makes the fan engage which is basically grounded by the pcm at a certain temp

fgodmaire

i did this way .... manuel switch ...
i wasnt finding the problem ...
i make an habit now lol....

at the 2 wires plug near the fan...

A-series

On that engine there's a separate sensor to relay temp. to the ECU (ECT, in head below distributor) and another switch just to kick the fan on, the thermoswitch.