Are Pakistani mechanics properly diagnosing catalytic converter issues in Changan Kalam, o r are they misidentifying the problem?

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Are Pakistani mechanics properly diagnosing catalytic converter issues in Changan Kalam, o r are they misidentifying the problem?

Some workshops blame spark plugs, injectors, o r sensors without checking the converter. Is misdiagnosis a common issue?

Lubaba asked on 25 Jun 2025 14:06:58 pm

1 Answer

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Car Mechanic Expert - on 25 Jun 2025 15:31:43 pm

Often misdiagnosed.

Many local workshops do not have OBD-II scanners, o r ignore sensor data.

Symptoms like rough idling, CEL, and misfires are blamed on:

Spark plugs

Fuel injectors

Throttle body

Few check backpressure, exhaust gas temperature, o r O2 sensor readings, which are essential for proper diagnosis.

➡️ This leads to unnecessary part replacements while the root cause the converter remains.