Ever since I have had my 99 V Punto it has had an intermittent squeak coming
from the heater fan under the glove compartment. It is most noticeable on
fan speed 1 & 2. When it is on 3 & 4 you can't hear it at all. Giving the
motor unit a delicate (!) whack usually makes it sto squeaking for a minute
or two but it soon comes back. A long journey with the fan squeaking like
this drives me nuts!
What is most annoying is that it behaves perfectly every time the car is in
for a service!
Anyone had a similar problem? Or, is the motor fairly easy to remove to
have a look at and / or oil?
Thanks in advance!
My 1992 Tempra has a squeaky fan as well. A couple of times it has not
started, causing the thermal overload to trip. I guess they get stiff with
age. I've removed it and oiled up the fan motor which helps for a while.
Had several Fiat fans out for oiling, the heat radiation from the heater
during the cooler months causes the oil to gum and oxidise, three to five
years between lubrication is typical. Don't use 3 in 1, use a fully
engine oil. Most of these are thinner than the 20W50 minerals and seem to
work fine for fan shaft lubrication, I've tried thinner, lower viscosity
but they seem to migrate away from the bearing. It's usually a pain in the
butt to get the fan assy out, in the Uno, removing one or both front seats
helps, then you can lie in the footwell. In passing for most Fiats the front
seat covers can be removed, and are symmetrical, so can be washed,
swapped left with right, some more foam added under the drivers bum,
(it gets compressed) and re-assembled. Get the ball and chain to put
the covers through a cool wash while you are skinning your knuckles
buggering about with the fan. Draining the cooling system may be
advisable, then you can get the heater matrix out the way, and give it
a good clean/flush out. Works wonders for heater efficiency.
AFAIR I drained, undid the heater matrix hoses (have something
to hand to catch the rest of the water, the heater
matrix will still be fairly full) with the heater tap/valve with
set in the open position, then the whole thing comes
out as a lump, two bolts down the bottom and two self
tappers into Spire nuts under the dash. Assembly dismantles
by removing self tappers. Motor can be dismantled if it is
the type with an inaccessable back bearing
(there are several versions) to oil the back bearing
but be cautious, the motor carbon brushes can cause
problems for the inexperienced DIY'er if you are not experienced
with small DC motors.
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