What are the symptoms of Unusual noise and metallic grinding when A/C is on in Honda Acura TSX?

No cold air from vents. Unusual noises when A/C is turned on. Dark sludge or metal shavings in system

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Unusual noise and metallic grinding when A/C is on

Q: How to fix Unusual noise and metallic grinding when A/C is on in Honda Acura TSX?

Just replacing the compressor with a new one results in it seizing up again within a few kilometers due to circulating filings. Correct repair requires absolute replacement of the compressor, condenser with integrated dryer and TXV expansion valve. All other aluminum lines and the evaporator inside the cabin must be subjected to repeated, rigorous chemical flushing with a specialized solvent.

in Honda Acura TSX (2002-2017)

Symptoms

No cold air from vents
Unusual noises when A/C is turned on
Dark sludge or metal shavings in system

DTC error codes

No faults in controller

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Technical diagnosis (Premium)

Recognized technical fault:

Auxiliary controller voltage instability detected

Technical analysis

Detailed analysis of HVAC controller operation parameters, CAN bus data readings, and diagnostic signal waveforms. Purchase PRO access or log in to read the full fault analysis.

Confirmed solution

Complete step-by-step repair procedure including module non-volatile memory reset, sensor calibration, and correct wiring routing. Unlock the full report to see the instruction.

Parts needed

Filters ferrite anti-interference / noise suppressor
Auxiliary starting battery (depending on cell status)

Workshop hacks

Important workshop tips for mechanics regarding bypasses without expensive control module replacement and manufacturer software service bulletins.

TSB / TPI service bulletins

TSB-24-HVAC-01TPI-2068943/2

A/C Technical Specifications

Refrigerant specifications for this model are available in the catalog.

Open refrigerant database

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