Why does SAIC Roewe RX5 shake at idle speed?

The most common cause of car jitter caused by Pacific Auto Network is that the throttle valve is too dirty or the fuel injector has too much carbon deposit. Poor ignition system and poor spark plug flashover can also lead to this fault phenomenon.

When there is too much carbon deposit in the engine, the gasoline sprayed by the fuel injection head will be absorbed by the carbon deposit during cold start, which leads to the lean mixture during cold start and makes it difficult to start. In this case, only when the gasoline adsorbed by carbon deposits is saturated, it is easy to run into the car. After running into the car, the gasoline adsorbed on carbon deposits will be sucked into the cylinder by the vacuum suction of the engine for combustion, which will thicken the mixture and dilute the combustible mixture of the engine, resulting in idling jitter after cold start. The lower the temperature, the more oil is needed for cold start, and the existence of carbon deposit will affect the smooth start. Solution: clean the oil circuit, check whether there is carbon deposit in the idle motor, and clean it.

If you clean up the engine carbon deposit, clean the throttle, change the oil pad and spark plug, etc. You still find the car body shaking at idle speed. I suggest you go to the 4S shop to check whether the oil supply pressure and intake pressure sensors are normal. If the oil supply pressure of the oil pump is abnormal, or the intake pressure sensor has an incorrect value or works poorly, it will cause the body to shake. Solution: Check the oil pressure and replace parts if necessary.

(Photo/Text/Photo: Pacific Auto Network Lu Liting)