What Causes Engine Vibration in the Excelle?
2 Answers
The causes of engine vibration in the Excelle: 1. Improper adjustment of the idle switch, causing it to remain open during idle; 2. Poor atomization or clogging of the fuel injector; 3. Malfunction of the air flow meter; 4. Fault in the idle control valve or idle control circuit; 5. Incorrect signal from the coolant temperature sensor; 6. Failure of the oxygen sensor or feedback control circuit. The Excelle is a 4-door, 5-seater compact sedan with body dimensions of 4468mm in length, 1765mm in width, and 1469mm in height, with a wheelbase of 2611mm. The vehicle is equipped with a 1.3L naturally aspirated engine paired with a CVT transmission, delivering a maximum power of 79 kW at 6200 rpm and a maximum torque of 133 Nm at 4000 rpm. It features front-wheel drive, with a double-wishbone independent front suspension and a compound torsion beam non-independent rear suspension.
I've been driving my wife's Excelle lately and noticed severe steering wheel shaking at red lights. After a thorough check, I found this model's common issue is aging spark plugs, especially the factory nickel alloy ones which rarely last beyond 30,000 km. Upon removal, the electrode gaps were indeed burnt and deformed - switching to iridium plugs immediately smoothed things out. Another culprit could be cracked engine mount bushings; when the rubber deteriorates, metal parts collide directly, with idle ticking sounds being the telltale sign. If shaking worsens at 1/4 tank level, the fuel pump strainer might be clogged - remember to replace it during fuel tank cleaning. Also, leaking ignition coils can cause misfires (most noticeable during cold starts), with occasional engine light flickering as warning. These parts are inexpensive to replace, costing just a few hundred at local repair shops.
