Chevrolet 1994 Astro Bedienungshandbuch Seite 202

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Seitenansicht 201
8.
Then replace
the
pressure cap. At
any time during
this procedure
if
coolant begins to
flow out of the
filler neck,
reinstall the
pressure cap. Be
sure the arrows on
the pressure cap
line
up like this.
Engine Fan
Noise
This vehicle has a clutched engine cooling fan. When the clutch is engaged,
the fan spins faster to provide more
air
to cool the engine. In most every day
driving conditions the clutch is not engaged. This improves fuel economy
and reduces fan noise. Under heavy vehicle loading, trailer towing and/or
high outside temperatures, the fan speed increases when the clutch engages.
So
you may hear an increase
in
fan noise. This is normal and should not be
mistaken as the transmission slipping or making extra shifts. It is merely the
cooling system functioning properly. The fan will slow down when
additional cooling is not required and the clutch disengages.
You may also hear this fan noise when you start the engine. It will go away
as the
fan
clutch disengages.
If
a
Tire
Goes
Flat
It’s unusual for a tire to “blow out” while you’re driving, especially if you
maintain your tires properly.
If
air goes out of
a
tire, it’s much more likely to
leak out slowly. But if you should ever have a “blowout,” here are a
few
tips
about what to expect and what to do:
If
a front tire fails, the
flat
tire
will
create
a
drag that pulls the vehicle
toward that side. Take your foot off the accelerator pedal and grip the
steering wheel firmly. Steer to maintain lane position, then gently brake to a
stop well out of the traffic lane.
A
rear blowout, particularly on a curve, acts much like a skid and may
require the same correction you’d use
in
a skid. In any rear blowout, remove
your foot from the accelerator pedal. Get the vehicle under control
by
steering the way you want the vehicle to go. It may be very bumpy and
noisy, but you can still steer. Gently brake to a stop, well off the road if
possible.
If a tire goes flat,
the next section shows how to use your jacking equipment
to change a flat tire safely.
5-18
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