Chevrolet 1999 Astro Spezifikationen PDF herunterladen (Seite 256)

100

101

Start the engine and let it run until you can feel the

upper radiator hose getting hot. Watch out for the

engine cooling fan.

By this time, the coolant level inside the radiator

filler neck may be lower.

the level is lower, add

more of the proper

DEX-COOL@

coolant mixture

through the filler neck until the level reaches

the base of the filler neck.

Then replace the pressure cap. At any time during

this procedure

coolant begins to flow out

the filler neck, reinstall the pressure cap. Be sure

the arrow on the pressure cap lines up.

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 everyday driving

conditions, the clutch is not fully 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.

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.

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