From GTM Workshop

Libra overview Electrics General Electrics Lights Instruments Security Audio Interior Seats Roof Doors Exterior Tub Windows Clamshell Lights Engine Rover Audi Honda Brakes Specifications Bleeding Cooling Engine Cabin Suspension Front Rear

Contents 1 Engine Cooling System 1.1 Overheating 1.2 Bleeding Air from the System 1.3 Slow warm up 2 Cabin 2.1 Warm air when set on cold 2.2 Not enough air! 3 References 3.1 See also 3.2 External

Engine Cooling System

Reading list

• http://www.mgf.ultimatemg.com/group2/coolant/index.htm
• http://www.lame-delegation.de/mgf-net.de/thermostat/Water_System_Mods.htm

Overheating

• Check for air in the system! Air locks will reduce water flow.
• Location of the thermostat on K-Series units isn't suitable for the Libra due to long hose lengths.

On K-Series units the water temperature thermostat is placed at the entry point of the engine. It is possible to improve matter by relocating it to the exit.

• Low revs can mean not enough flow from the pump

Electric pumps are available

• Alternative radiator fan controls

  ECU controlled (K-Series)

  ECU uses head thermostat to switch a wire, use this for your fan. Note that on V6 engines this wire is pulse width modulated. On temp ~102^oC off temp ~96^oC.

  Inline variable electric

  The electric thermostat switches at the selected temperature and powers a relay with in turn powers the fan.

  Manually switched

  Use your finger!

Bleeding Air from the System

Remove the water filler cap and put a hosepipe down it, try to seal any gaps round it. Remove the water return pipe from the left hand side of the engine. Gradually turn up the pressure on the hosepipe.

Open the bleed valves: one on the top part of the radiator, one on the water pipe for the heater hose, and one on the metal water pipe on the engine. Once the air is out close the bleed valves, turn the pressure down on the hosepipe, refit the water return pipe, remove the hosepipe. Add the appropriate amount of antifreeze and top up the water level.

Slow warm up

Cabin

Warm air when set on cold

This can be caused when the are inlet doesn't mate well with the bonnet, warm air from the radiator can then be sucked into the air system.

To correct this fit the standard rover metro rubber gasket to the air intake.

Not enough air!

References

See also

External

• Water pump supplier http://www.thinkauto.com/
• Loughborough Radiators, Unit 3, Meadow Lane Industrial Estate, Loughborough, Leicestershire, LE11 1JP