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.
A/C Compressor Relief Valve Replacement
2009 Acura MDXSECTION A/C Compressor Relief Valve Replacement
- Recover the refrigerant with a recovery/recycling/ charging station (see REFRIGERANT RECOVERY ).
- Remove the front splash shield (see SPLASH SHIELD REPLACEMENT ).
- Remove the front undercover (see FRONT UNDERCOVER REPLACEMENT ).
- Remove the relief valve (A) and the O-ring (B). Plug the opening to keep foreign matter from entering the system and the A/C compressor oil from running out.
- Clean the mating surfaces.
- Replace the O-ring with a new one at the relief valve, and apply a thin coat of refrigerant oil before installing it.
- Remove the plug, and install and tighten the relief valve.
- Charge the system (see SYSTEM CHARGING ).
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.