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AutoTech08, Workshop owner
Category: Lexus
Satisfied Customers: 973
Experience:  Diploma in Automotive Engineering, 30 years working experience.
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where is the expansion valve located on a 1998 lexus gs300.

Resolved Question:

where is the expansion valve located on a 1998 lexus gs300. And how do i get to it.
Submitted: 8 years ago.
Category: Lexus
Expert:  AutoTech08 replied 8 years ago.


Hi there,


It is attached to the evaporator (cooling coil) and here are the removal procedures.



Removal & Installation

Disconnect negative battery cable.

Discharge A/C system, using approved refrigerant recovery/recycling equipment.

Disconnect and plug refrigerant lines from evaporator.

Remove instrument panel.

Remove packing from expansion valve.

Using Expansion Valve Wrench Set (07117-61050), separate expansion valve and tube and accessory.

To install, reverse removal procedure.

Evacuate and charge A/C system. Inspect system for leaks.



AutoTech08 and other Lexus Specialists are ready to help you
Customer: replied 8 years ago.
do i have to remove the entire dash.
Expert:  AutoTech08 replied 8 years ago.


Yes, the removal procedures indicates the complete instrument panel has to be removed.