The battery of Toyota Camry was dead when it was replaced. What should I do if the idle speed is unstable after the car starts?

It is best to carry out a learning program of throttle position sensor to restore the memory lost by computer due to power failure, so as to adapt it to the present situation of automobile and improve the overall performance.

The maintenance of throttle cable should have a certain degree of freedom. Idle speed is normal. Don't step on the accelerator and hit the steering wheel, turn on the electrical switch, but don't start the engine. Enter the self-diagnosis procedure first, then wait for 20 seconds, repeat this step for 3 times, start the engine 13 minutes or more, and keep the computer air conditioner control switch in the off position.

Matters needing attention in automobile battery replacement

It should be noted that before installing a new battery, if the brand and model of the battery are different, the external dimensions and terminal positions of the old and new batteries should be compared, and the battery capacity and cold start current parameters should be carefully checked. Especially in the northern winter, if the cold start current does not match, it may make it difficult to start the vehicle.

If conditions permit, the battery detector should be used for testing. Although the voltage between the positive and negative electrodes of some batteries is higher than 12V after being left for a long time, the capacity is actually insufficient, which is called "virtual electricity". This kind of battery needs recharging. It should be noted that the ambient temperature must be measured when it is higher than 0℃, and charged when it is higher than 5℃.