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Home >> Dodge and Ram >> 2003 >> Durango Base, 5.9 Z, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 97 (Heating & Air Conditioning) >> Diagnosis And Testing >> Diagnosis And Testing - Heater Performance Test >> Maximum Heater Output: Test And Action >> Temperature Reference

Temperature Reference

WARNING: This page is about a different car, the 2004 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
TEMPERATURE REFERENCE

Ambient Air Temperature 15.5° C (60° F) 21.1°C (70° F) 26.6° C (80° F) 32.2° C (90° F)
Minimum Air Temperature at Floor Outlet 52.2° C (126° F) 56.1° C (133° F) 59.4° C (139° F) 62.2° C (144° F)

Both of the heater hoses should be HOT to the touch (coolant return hose should be slightly cooler than the supply hose). If the coolant return hose is much cooler than the supply hose, locate and repair the engine coolant flow obstruction in the heater system. If both heater hoses are cool to the touch, inspect the engine cooling system (Refer to COOLING ).