What is the idle speed of the Baojun 510?

[JeffreyRose]

Baojun 510's idle speed is between 550 and 800 RPM. The Baojun 510 is a compact 5-door, 5-seat SUV with the following dimensions: length 4220mm, width 1740mm, height 1615mm, and a wheelbase of 2550mm. It features front-wheel drive, with a MacPherson strut independent front suspension and a torsion beam non-independent rear suspension. The Baojun 510 is equipped with a 1.5L naturally aspirated engine paired with a 6-speed manual transmission, delivering a maximum power of 73 kW at 5800 RPM and a maximum torque of 135 Nm between 3600 and 5200 RPM.

[RyanFitz]

I've been driving the Baojun 510 for three years. When starting the car cold, the idle speed surges to around 1000-1200 RPM, then gradually drops to around 800 RPM after two minutes when the temperature gauge starts moving. When I first bought it, I was particularly concerned about the needle fluctuations, but later a 4S店 technician told me the normal range is between 750-850 RPM. In summer, when the air conditioning is on, you can hear the engine sound become heavier, and the RPM increases to around 900, dropping back when the AC is turned off. Once during maintenance, I found the idle was unstable—it turned out to be due to a layer of sludge in the throttle body. An experienced driver suggested checking the tachometer at red lights; if the idle exceeds 1000 or drops below 700 RPM after the engine warms up, it might indicate issues with spark plugs or sensors.

[McPresley]

Last year, I checked the official data of the Baojun 510 in the maintenance manual. The standard idle speed for the 1.5L version after warming up is 800±50 rpm. My relative's 2019 model measured around 780 rpm, with the N gear being 20 rpm higher than the D gear. The idle speed of this car is not particularly low, as Japanese cars in the same class generally idle at 750 rpm. Last time, when I helped a friend check the idle speed, his car kept fluctuating between 650-1000 rpm, and it turned out the air flow meter was faulty. Reminder to everyone: don’t overlook the throttle body. I clean mine every 20,000 kilometers, and removing it to check the carbon buildup can increase the idle speed by over 100 rpm. The idle speed is most accurate during prolonged traffic jams; wait until the coolant temperature reaches 90 degrees before checking the gauge.

[OBrady]

Measured idle speed data under different conditions: cold start at 1200 RPM (little difference between winter and summer), stabilizes around 790 RPM after warm-up, briefly surges to 950 RPM when AC is turned on before settling at 850 RPM. The repair shop mentioned different settings between new and old models - the 2020 version is calibrated 30 RPM lower than the 2017 model. Some owners report higher winter idling in northern regions is normal as long as it doesn't exceed 1200 RPM. Key factors are the intake air temperature sensor and coolant temperature sensor - recommended to change antifreeze every two years. During traffic congestion when following cars, I often glance at the tachometer - consistently below 700 RPM might warrant checking the ignition coils.