Car Shakes When AC Is On
The car shakes or vibrates noticeably when the AC is turned on, especially at idle or low speeds.
Possible Causes
Compressor Overloading Engine
Medium likelihoodThe compressor puts extra load on an engine that is weak or has another issue.
Bad Engine Mount
Medium likelihoodA bad engine mount allows compressor vibrations to transfer excessively to the vehicle.
Low Idle RPM
Medium likelihoodEngine idle RPM is low and does not increase automatically when AC is engaged.
How to Diagnose?
- 1 Monitor engine RPM when toggling AC on/off
- 2 Visually inspect engine mounts
- 3 Verify engine runs smoothly without AC
- 4 Check spark plugs and air filter
Repair Cost
Depends on cause and vehicle type
| Service | Price | Notes |
|---|---|---|
| Estimated Repair Cost | 100–1500SAR | Depends on cause and vehicle type |
* Prices are estimates and may vary depending on vehicle type and condition. Contact us for an accurate quote.
Frequently Asked Questions
Car shakes when I turn on AC, is the AC the problem?
Not necessarily. The issue may be with the engine itself (mounts, spark plugs, throttle) and only shows up with the extra AC load. Comprehensive diagnosis is needed.
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