Dodge/Jeep TSB: No A/C Over 50 MPH, Engine Runs Hot – UnderhoodService

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Engine Compartment

Dodge/Jeep TSB: No A/C Over 50 MPH, Engine Runs Hot

This bulletin involves inspecting the primary thermostat housing for a resin material (debris) blocking the cylinder head coolant port. Models: 2010 Journey, Avenger, Compass, Patriot and Caliber.

Andrew Markel
By Andrew Markel
Andrew Markel is the director of content for Underhood Service magazine. He has been with Babcox Media for 20 years. He is a technician and former service writer and holds several automotive certifications from ASE and ­aftermarket manufacturers.
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Dodge Jeep caliber no ac

Problem: Dodge/Jeep: No A/C Over 50 MPH, Engine Runs Hot

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OVERVIEW:

This bulletin involves inspecting the primary thermostat housing for a resin material (debris) blocking the cylinder head coolant port.

Models: 2010 Journey, Avenger, Compass, Patriot, Caliber

SYMPTOM/CONDITION:

dodge jeep no acA/C system may be inoperative above 50 mph, or the engine runs hot or possibly overheats. This condition could be caused by a resin material (debris) blocking the primary thermostat housing port. Removing this restriction will correct the issue.

REPAIR PROCEDURE:

1. Remove the primary thermostat from the thermostat housing.

2. Inspect thermostat housing port.

NOTE: Resin material (debris) could be completely or partially blocking the port.

3. Is any resin material (debris) stuck or blocking the housing port?

a. Yes – Proceed to Step 4.

b. No – Install the primary thermostat into the housing. Return vehicle to customer or vehicle inventory.

4. Remove resin material (debris) and reinstall the primary thermostat into the housing.

5. Top off the coolant.

Courtesy of MotoLogic.

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