1996 Renault Laguna

Heater problem
1996 Renault Laguna 6 cyl Front Wheel Drive Manual 69000 miles

my heater blows warm air when switched to numbers 1, 2, 3.
when heater is switched to full the air goes from warm to cold it never blows hot
the temp guage never goes above half
could this be anything to do with the thermostat or some other problem
December 22, 2007.

Replace the thermostat and check the heater core for blockages and flush core if necassary !

Dave H
Mar 21, 2009.