Ensure the heater valve is not clogged. Though it opens and close, it could be clogged and not allowing oolant to pass. Fuly open it and use a hose to test if it is clogged.
To vent (bleed) the system, remove the radiator cap, turn heater to maximum and start engine. Run for about 5 minutes and top up coolant if necessary. Once coolant level in radiator stabilises, close radiator cap and test.
Check the air mix and mode control cables and adjust if necessary.
Set the temperature control dial at "MAX. COOL" position
Set the mode control dial at "DEF" position.
NOTE: Lock the clamp while lightly pulling the outer cable to the direction shown by arrow in the illustration.
Fig. 154: Adjusting Air Mix Control Cable
Adjust the air mix control cable.
Set the air mix damper control lever to "MAX. COOL" position and connect the inner cable to lever pin and clamp the outer cable.
NOTE: Lock the clamp while lightly pushing the outer cable to
the direction shown by arrow in the illustration.
Fig. 155: Adjusting Mode Control Cable
Adjust the mode control cable: Pull the air inlet control link to "DEF" position and connect the control cable and lock the clamp.
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Saturday, December 25th, 2010 AT 9:04 AM