Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2007COBALT L4-2.2LREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGEXPANSION VALVESERVICE AND REPAIR
2007 Chevrolet Cobalt L4-2.2L
Expansion Valve: Service and Repair
2007 Chevrolet Cobalt L4-2.2LSECTION Service and Repair
Thermal Expansion Valve Replacement
Tools Required
J39400-A Halogen Leak Detector
Removal Procedure
1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
2. Remove the condenser tube and evaporator hose from the thermal expansion valve (TXV).
3. Remove and discard the seal washers.
4. Remove the TXV bolts.
5. Remove the TXV.
6. Remove and discard the seal washers.
Installation Procedure
1. Install new seal washers to the evaporator core fittings.
2. Install the TXV.
Notice: Refer to Fastener Notice.
3. Install the TXV bolts.
Tighten the bolts to 7 N.m (62 lb in).
4. Install new sealing washers on the condenser tube and evaporator hose fittings.
5. Install the condenser tube and evaporator hose to the TXV.
6. Install the TXV nut.
Tighten the nut to 20 N.m (15 lb ft).
7. Evacuate and charge the refrigerant system. Refer to Refrigerant Recovery and Recharging.
8. Leak test the fittings using the J39400-A.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.