2.7L Engines

1. Verify engine coagulant level. If low, fill cooling system as described on page 7-13 of the 1998 Concorde/Intrepid service manual (Publication No. 81-270-8140) and proceed with next step.

2. Check the left heater outlet duct under the I/P to verify that its outlets are oriented down toward the customer's foot area. If not, remove the duct and re-orient so that it is. Proceed with next step.

3. Fully warm up the vehicle by allowing the engine to run at 1500-2000 RPM for 15-20 minutes to verify if the low/no heat condition can be duplicated. This should also serve to de-aerate the cooling system.

4. Connect DRB III and verify that the coolant temperature is above 180°F (82°C). If coolant level is okay but engine temperature remains low, remove thermostat per service manual instructions. Inspect thermostat to see if it is propped/stuck open. If propped/stuck open, call STAR Hotline during the vehicle launch period for replacement part. Replace thermostat as described on page 7-19 of the service manual and re-run 2.7L Engine Diagnosis steps 3-4. If not propped/stuck open, call STAR Hotline during the vehicle launch period for further instructions.

5. If coolant temperature is above 180°F (82°C), but heater performance continues to be poor, perform HVAC self-diagnostic on page 24-8 of the service manual. If fault codes are found refer to the appropriate service manual section to correct the fault and re-test.

6. If problem persists, call STAR Hotline during the vehicle launch period for further instructions.