Check to see if both heater hoses are hot when car is warm. If they are then check the servos under the dash, pic enclosed. It may be your water valve isn't working if both hoses are not hot.
Image (click to enlarge)
Friday, January 13th, 2012 AT 3:49 PM
How do you access this mechanism?
Friday, January 13th, 2012 AT 6:33 PM
It'snot very easy best way is to look through from where the gas pedal is tosee ifyou can gain access there. Make sure both your heater hoses are hot first though as it may be hte water valve on theengine not operating.