SRT-4 L4-2.4L Turbo VIN S (2004)
Expansion Valve: Testing and Inspection
WARNING: REFER TO THE APPLICABLE WARNINGS AND CAUTIONS FOR THIS SYSTEM BEFORE PERFORMING THE
FOLLOWING OPERATION.
NOTE: The A/C expansion valve should only be tested following testing of the A/C compressor.
The A/C expansion valve can fail in three different positions (open, closed or restricted).
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Open Position: this will result in a noisy compressor or no cooling. The cause can be a broken spring, broken ball or excessive moisture in the A/C
system. If the spring or ball are found to be defective, replace the A/C expansion valve. If excessive moisture is found in the A/C system, recycle
the refrigerant.
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Closed Position: There will be low suction pressure and no cooling. This may be caused by a failed power dome or excessive moisture in the A/C
system. If the power dome on the expansion valve is found to be defective replace the A/C expansion valve. If excessive moisture is found in the
A/C system, recycle the refrigerant.
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Restricted Orifice: There will be low suction pressure and no cooling. This may be caused by debris in the refrigerant system. If debris is believed
to be the cause, recycle the refrigerant and replace the A/C expansion valve and receiver/drier.
