Fiat X 1/9 1978 - Carburetor Cooling Fan Runs All the Time

ELECTRICAL SYSTEM TROUBLESHOOTING
Page 262
3.a.
RADIATOR AND CARBURETOR COOLING SYSTEMS
Connect
red
meter
lead
to
terminal
87
{red
wire)
of
relay.
Connect
black
lead to ground.
If
meter
reads
voltage,
go
to
step
e.
If
meter
does
not
read
voltage,
go
to
step 3.
Get
ohmmeter.
Connect
red
lead
to
terminal
85
(gray/red
wire)
of
relay.
Connect
black
lead
to
ground.
If
meter
reads
more
than
5
ohms.
go
to
step
9.
If
meter
reads
5
ohms
or
less, replace relay.
If
meter
reads
more
than
5
ohms,
check
gray/red
wire
from
relay
to
thermostatic
switch.
Check
white/black
wire
from
switch
to
ground.
Check
ground
terminal.
Repair
wire
or
ground
connection.
Go
to
fan
motor.
Check
red
wire
from
fan
to
relay
for
defects.
If
wire
is
damaged,
repair
wire.
Check
black
wire
from
fan
to
ground.
If
wire
is
damaged
repair
wire.
NOTE
Wire
is
grounded
at
relay
mount.
Check
ground
terminal
for
dirt,
corrosion,
or
looseness.
Clean
and
tighten
ground
terminal.
Repair
ground
wire.
If
wires
and
ground
terminal
are
good,
replace
fan
motor.
CARBURETOR
COOLING
FAN
RUNS
ALL
THE
TIME
Le.
b.
NOTE
The
carburetor
cooling
fan
will
run
after
the
engine
is
shut
off,
even
with
the
ignition
key
removed.
This
is
normal.
Disconnect
gray/red
wire
from
thermostatic
switch.
If
fan
stops
replace
switch.
If
fan
still
runs.
90
to
carburetor
cooling
fan
relay.
BLACK
LEAD
FAN
RELAY
RED
WIRE
BLACK
LEAD
GROUND
FAN
RELAY
““--.
ff.-
ll
GRAY/RED
WIRE
TERMINAL
85‘
T“-
RED
LEAD
GROUND
WIRE
ll
BLACK
vgme
THERMOSTATIC
SWITCH
GRAY/RED
WIRE