Idle speed is unstable after cleaning the throttle.

Idle speed is unstable after cleaning the throttle.

Recently, a car buyer asked me that my car needed maintenance and introduced him to do throttle cleaning. He didn't know much about this piece of professional knowledge, so he let the car have a throttle cleaning. However, after cleaning the throttle, the idling jitter and fuel consumption increase. Isn't cleaning a good thing? Why is it getting more and more abnormal? Let's see why.

Idle jitter and fuel consumption increase after cleaning the throttle, mostly because the throttle opening is not reset. Because of the long-term carbon deposition, the throttle valve is squeezed by carbon deposition, and the opening of the throttle valve is also expanded. After we clean the throttle, if we don't reset it, the throttle opening will be the same as before carbon deposition, which will lead to the expansion of air intake and supply, and in serious cases, idling jitter and fuel consumption will increase.

So how do you reset the throttle opening? Nowadays, most vehicles use electronic throttle, so it is necessary to reset the throttle on the computer with a tester to achieve normal waiting speed. There are also some classic cars that use mechanical equipment to suspend the throttle, so this kind of car will slowly restore the throttle opening to the reset state in the later period of driving, and the waiting speed will of course become stable.

There are also some "tricks" ON the natural network, such as pulling out the negative electrode of the battery before cleaning the accelerator, or turning the key to the ON position for a few minutes after cleaning, then turning it to the ON position, and completely stepping on the accelerator pedal when there is no car, and then restarting the car. This method is effective for some car buyers, but useless for some car buyers. In fact, different cars have different reset methods, and the most convenient way is to pair with the computer.

Common problems after cleaning throttle valve

After cleaning the throttle, it is easy to cause idle jitter and increase fuel consumption, which is generally caused by the wrong throttle opening. Because the throttle is squeezed by carbon deposit, the throttle opening will expand accordingly. After cleaning, if there is no calibration, the throttle opening will remain in the state before carbon deposition, and the air intake will increase, leading to idle jitter, large speed ratio and increased fuel consumption of automobile engines.

What should I do if the idle speed of the cleaning throttle is high?

Nowadays, most cars use electronic throttle, and the on-board computer monitors the intake of throttle to control the ignition advance angle. When it is found that the throttle valve is cleaned and the air intake becomes larger, the oil pump will be lowered according to the situation. If the idle speed is high, just use the tester to connect with the automobile engine and reset the throttle to recover and wait for the speed. However, for some cars, mechanical equipment is still chosen to hang the throttle, which can slowly restore the throttle opening to its original state during exercise, generally running 10 km, and then the speed becomes stable.

Generally, the throttle valve is cleaned every 20-30 thousand kilometers. Professional foam cleaner can be used for cleaning, and the throttle valve can be disassembled for cleaning. The automobile 4S shop or auto repair shop generally adopts the method of "hanging bottle" for cleaning-in the running state of the automobile engine, the cleaning liquid is continuously sprayed into the air inlet, which takes a long time, but it is very simple to control and can also clean the air inlet by the way.

We must pay special attention to the fact that the throttle does not need to be cleaned frequently. Because there is a layer of anti-fouling and anti-static architectural coating on the surface of the throttle, if the cleaning is too frequent or the cleaning solution is used unreasonably, the coating will fall off, and the throttle will be more dirty in the future. Idle speed is unstable after cleaning the throttle. Frequently Asked Questions after Throttle Cleaning @20 19