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i just got my 86 running fresh motor i have no history with this car.
i have a single blade plug coming from the fan and cant figure out where it should go its located near the ac comp also still not sure where relays are located under hood heres apic
any help appreciated
steve
Stock there is no wire from the fan motor direct to a sensor ; power only comes from the mentioned relay
unless a PO has ired the main fan to run of the mech sensor used for the Aux fan
theres three wires coming from fan
blk/purple
black grnd
green
the green is split one to relay and one to this plug
the fan runs when jumpered + blk/plp to power but does not engage at 220f
the pic i showed is the radiator water level sensor!
i havent chased down the sensor yet i think its located under the plenum check tomorrow
thanks for the help
steve
ive chased down my fan relay and grounded the green/wht and the fan comes on according to the schematic that gos to the emc my question is how does the ecm no to close circut
and turn the fan on. heat sensor or? im going up to 335 f the fan does not come on.
thanks for the help
The coolant temp sensor for the ECM is in the front of the intake base below the TB. There should be a Yel & a Blk wire.
To see if the ECM drivers can engage and hold the fan relay on, open the small connector in the A/C pressure line and start the engine; the main fan should come on and stay on.
To see if the ECM drivers can engage and hold the fan relay on, open the small connector in the A/C pressure line and start the engine; the main fan should come on and stay on.
Or jumper A-B at the ALDL connector and turn the key on.
Fan should run