What are the symptoms of Unusual noise and metallic grinding when A/C is on in Ford TRANSIT?

Air conditioning works intermittently. Unusual noises when A/C is turned on

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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 Ford TRANSIT?

In brand new vehicles, often with mileage less than 5,000 miles, the air conditioning unexpectedly stops working, the compressor seizes, accompanied by a loud squealing sound (the drive belt slipping on the damaged wheel). The cause was internal degradation and blockage of the compressor caused by a fault on the assembly line. Solution: Call and corrective action (Customer Satisfaction Program 24P28), requiring a rigorous replacement of the entire compressor assembly, and if the system was contaminated with filings, a long, dedicated flushing of the installation, replacement of the condenser, lines and seals, in order to protect the newly installed systems against recurrence.

in Ford TRANSIT (2024-2025)

Symptoms

Air conditioning works intermittently
Unusual noises when A/C is turned on

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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

Connect/Tourneo Connect 1,0 i EcoBoost

Refrigerant: R134a Amount (g): 575g Oil: WSH-M1C231-B PAO 68 lub PAG ISO 46 Oil (ml): 120ml

Connect/Tourneo Connect 1,6 i EcoBoost

Refrigerant: R134a Amount (g): 675g Oil: WSH-M1C231-B PAO 68 lub PAG ISO 46 Oil (ml): 130ml

Connect/Tourneo Connect 2,5 Duratec

Refrigerant: R134a Amount (g): 675g Oil: WSH-M1C231-B PAO 68 lub PAG ISO 46 Oil (ml): 130ml

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Unusual noise and metallic grinding when A/C is on

Symptoms

A/C Technical Specifications

Other problems in TRANSIT

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