Rampage L4-135 2.2L (1983)
Radiator Cooling Fan Motor: Description and Operation
Electric fan (Typical). 1984-87 Dodge & Plymouth Mini Vans
Electric fan (Typical) - 82-84 Rampage, 83 Scamp & 87 Dakota
On all except 1986-87 models with 4-135 (2.2L) engine and 1987 models with 4-153 (2.5L) and V6-181 (3.0L), the fan is controlled by a fan switch
which is located on the radiator. The switch will automatically turn on when coolant temperature reaches 200° F.
On 1986-87 models with 4-135 (2.2L) engine and 1987 models with 4-153 (2.5L) and V6-181 (3.0L), the fan is controlled by an on board computer.
Coolant temperature is sensed by the computers temperature sensor which has two thermistor sensors, one of which is for the cooling system fan.
On models with A/C, when the A/C system is in operation, the fan motor will operate continually regardless of engine coolant temperature. When the
ignition switch is turned off, the fan motor will stop operating, except on some 1984-87 Chrysler models equipped with 4-156 (2.6L) engines w/air
conditioning. On some 1984-87 Chrysler models equipped with 4-156 (2.6L) engines and air conditioning, the fan will remain operating with ignition off
for approximately 5-10 minutes if ambient temperature at radiator is above a predetermined level.
On all except 1986-87 models with 4-135 (2.2L) engine and 1987 models with 4-153 (2.5L) and V6-181 (3.0L), the radiator fan switch is located on the
left side of the radiator tank. The switch is normally open and incorporates a bimetallic disc which pushes a plunger when coolant temperature reaches
200° F. Normal operation is indicated when fan motor turns on and off at appropriate temperatures.
The ambient temperature switch, used on some 4-156 (2.6L) engines w/air conditioning, is located on the radiator cooling fan mounting bracket and is
used in conjunction with a time delay to activate the radiator cooling fan for approximately 5-10 minutes with engine off during periods of radiator
ambient temperature of approximately 100° F or above.
