General Inspection

COOLING SYSTEM – Viscose fan

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PURPOSE
The viscose fan is attached to the water pump and designed to cut in and out depending on the temperature of the water.  The fan will last at least 5 years or 100,000Kms.  After this the fan should be checked periodically every 10,000Kms for its effectiveness.  The viscose fan is a fluid substance that changes its viscosity depending on the heat, allowing the fan to freely move or lock up on a one to one ratio with the pulley.

THINGS ...

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THE NOISE – Thermostat stuck or sticking

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THE EFFECT
This type of problem will give the same affect as a blown head gasket.  It will cause the cooling system to appear unstable.  It may also cause the upper radiator hose to tear apart as the thermostat decides to open with a great force of hot water.

THINGS TO LOOK FOR
If you decide to put another radiator hose on.  What you  need to do is feel the upper and lower radiator hoses at normal operating temperature, very carefully, ...

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EFI – Fuse box

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PURPOSE
The fuse box is designed to hold fuses and relays and there may be several of these around the vehicle.  It’s always a good idea to keep a few spare fuses, just in case.

THINGS TO LOOK FOR
When checking the fuses, it’s best to check the fuses with a test light and don’t rely on the fuse index map indicating where the fuses connect as they may be incorrect.  What is meant by the map is that sometimes when ...

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EFI – Fuel pump relay

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PURPOSE
The fuel pump relay is designed to switch the fuel pump on with a low voltage.  At the same time the relay is a heavy duty switch making it possible to switch on and off without wearing out the switch or preventing arcing in the switch.  A fuel pump relay is designed to switch off if overloaded.

THINGS TO LOOK FOR
When the fuel pump relay seems to be getting warm to hot, this indicates that it is either being ...

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EFI – Air flow meter

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PURPOSE
The air flow meter is a component to allow the velocity of air through it and at the same time it measures the air passing either by a hot wire or a flap connected to a potentiometer.  This value is sent to the computer indicating the quantity of fuel required.  If the air flow meter is a hot wire type it also has a self cleaning process to keep the wire clean from the value interference.

THINGS TO LOOK FOR
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