are at the race track or drag strip, pushing into the limits of your Mustangs
engine, suddenly you see the Water temp gauge needle start to raise dangerously,
should you stop??
with this fine tip.
fan is controlled by the PCM and/or the Constant Control Relay Module
(CCRM), when the EEC detects certain temperatures it will switch the fan
to either it's low or high speed settings. The A/C will turn the fan to
high speed when it is set to max.
how can you bypass both the EEC and CCRM and install a manual switch to
control the fan operation?
First you will have to disconnect
the NEGATIVE battery terminal and locate the CCRM and a pin on its connector.
CCRM module is located LEFT (you looking at engine) of the radiator reservoir/overfill
that you located the CCRM, remove the connector, you will need a 6mm socket
to detach the connector from the CCRM housing.
PIN / WIRE #17 (GREEN with PURPLE stripe) on the connector ,
it should be easy to spot, the connector has numbers for each pin.