Where is the cooling fan relay located Escort 1997 1.8
11-02-2016, 06:36 PM
#1
I'm Finding My Feet Here Now
Thread Starter
Where is the cooling fan relay located Escort 1997 1.8
Anyone point me in the direction of the cooling fan relay on escort 1.8 zetec twin speed fan, its working on high speed with air con on but not on low speed when it start to over heat when sitting in traffic
Have changed the 3 plugs,
2 on the thermostat housing engine temp sensor & engine temp sender
1 on the big pipe on radiator
thermostat working ok
all fuses checked and ok
so me thinking its gotta be relay but I cannot find one anywhere
cheers in advance
Have changed the 3 plugs,
2 on the thermostat housing engine temp sensor & engine temp sender
1 on the big pipe on radiator
thermostat working ok
all fuses checked and ok
so me thinking its gotta be relay but I cannot find one anywhere
cheers in advance
12-02-2016, 05:17 PM
#4
I'm Finding My Feet Here Now
Thread Starter
Found what I believe to be the cooling and ac fan relay
its green and its 8 pins
see pic below
when I removed NO air con fan so assuming it is
Ford part 93AG8C616B1C
its green and its 8 pins
see pic below
when I removed NO air con fan so assuming it is
Ford part 93AG8C616B1C
10-06-2016, 05:03 PM
#7
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This is the relay. It sits usualy behind the battery.
It's controlled by the thermal relay on the big hose between the thermostate and the radiator which has 4 wires and it works like this: on ignition/runing on one of the wires comes on constant +12v. Low speed is when the thermal relay shorts that constant +12v wire to one of the two closer to each other pins, high speed is when the thermal relay shorts to the other of the two closer to each other pins. I don't know for what is the fourth wire but i suppose it may have something to do with the a/c.
I was fed up with dodgy thermal sensors and since i'm with 2.0 zetec and ecu from mondeo which has its fan controlled from the ecu directly by pins 13 (low speed) and 31 (high speed) i emulated the scheme with two relays with normally closed contacts (because on pins 13 and 31 there is constant 'earth' or batt'-' and the ecu cuts it off when it has to run the fan) so now i have spot on temperature control of the fans.
It's controlled by the thermal relay on the big hose between the thermostate and the radiator which has 4 wires and it works like this: on ignition/runing on one of the wires comes on constant +12v. Low speed is when the thermal relay shorts that constant +12v wire to one of the two closer to each other pins, high speed is when the thermal relay shorts to the other of the two closer to each other pins. I don't know for what is the fourth wire but i suppose it may have something to do with the a/c.
I was fed up with dodgy thermal sensors and since i'm with 2.0 zetec and ecu from mondeo which has its fan controlled from the ecu directly by pins 13 (low speed) and 31 (high speed) i emulated the scheme with two relays with normally closed contacts (because on pins 13 and 31 there is constant 'earth' or batt'-' and the ecu cuts it off when it has to run the fan) so now i have spot on temperature control of the fans.
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