What Causes the Peugeot Engine to Jerk and Shake at Idle?
1 Answers
The following are the reasons for the jerking and shaking of the Peugeot engine at idle: 1. Engine intake pipe leakage: The intake system contains many intake manifolds or valves. Leakage in these components allows unwanted gases to enter, causing the air-fuel mixture in the intake manifold to become either too rich or too lean, ultimately leading to intermittent shaking or weak performance at idle. 2. Fuel system blockage or malfunction: Due to a clogged fuel tank vent, fuel tank switch, fuel filter, or fuel line between the tank and carburetor, the engine does not receive the required amount of fuel at idle, resulting in a lean mixture, reduced engine power output, and idle shaking. 3. Idle control valve failure: The idle operation of an electronically fuel-injected engine is mostly controlled by the idle control valve. The ECU adjusts the opening of the idle control valve based on signals such as engine speed, temperature, and throttle position to maintain stable idle speed. If the valve malfunctions, it can cause uneven air distribution, fluctuating engine power at idle, and vehicle shaking. 4. Engine carbon buildup: Carbon deposits can accumulate in the cylinders, throttle body, spark plugs, and intake system—all critical areas affecting engine power output. Excessive carbon buildup reduces ignition energy and intake efficiency, leading to unstable engine power output, idle shaking, and poor acceleration.
