Each attentive car owner carefully monitors the technical condition of his iron friend. This allows not only to save on repairs, but also to reduce the risk of getting into an accident from any breakdown. Correcting some faults will also save you fuel costs. For example, if your car has too high idle speed, there is an overconsumption of gasoline. How to reduce engine idle speed?
It is necessary
a set of tools, clamps, new gaskets, operating instructions
Instructions
Step 1
It should be said right away that in a cold engine, immediately after switching on, it runs for some time at increased idle speed. This is necessary in order for it to warm up. That is, it is easy to guess that in the winter season of the year, after switching on, the engine will run longer at increased idle speed than in summer. The normal RPM level for most vehicles is around 1000 RPM. The exact level recommended for your car can be found in the owner's manual. If the idle speed of your car does not drop after the engine has warmed up, or "floats", you need to look for a malfunction.
Step 2
First you need to find out what type of engine is installed in your car - injection or carburetor. If you have a carburetor engine, you can easily adjust it yourself. If the car is of considerable age, the carburetor should be removed and cleaned, as a clogged carburetor is often the cause of high idle engine speeds. If you do not have experience in setting up and flushing the carburetor, it is better to entrust this procedure to knowledgeable people who can quickly and quality repair it.
Step 3
Check all rubber seals and hoses carefully. A torn gasket can also cause increased idle, as more air will enter the system than it should be. Pay particular attention to the pipes and gaskets leading to the intake manifold. Try to gently push through the rubber hoses, while keeping track of the revs. If they fall off when you press on any hose, this means that you have found the cause of the problem. Pay attention to all connections. Worn hose clamps should be replaced as they can loose hoses and leak air.
Step 4
If your car has an injection engine, it is almost impossible to mechanically change the RPM level. The fact is that the revs depend on the firmware that is "poured" into your car. That is, the level is controlled by software. You can install an on-board computer to monitor the RPM online. If you want to lower the level, you should contact the specialists who will "fill" you with a new firmware. But it should be borne in mind that too low a level of idle speed can lead to premature wear of the generator.
