What is a throttle valve in a car engine. When it is necessary to change the throttle cable, how to replace and adjust yourself.
The throttle valve is a structural element of the intake system on petrol-injection internal combustion engines. It is located between the air filter and the intake manifold.
In general, the throttle valve can be called an air valve. When it is open, the pressure in the intake system is equal to atmospheric pressure. Its closed position reduces the pressure to a vacuum state. This property of the damper is used in the work of strengthening the brakes (vacuum), as well as in order to blow through the adsorber in the gasoline vapor recovery system.
The throttle valve is opened and closed with a cable. Since the damper itself usually serves as long as the car itself, the main problem is the cable, which sometimes needs to be replaced.
When do you need to change it? If you cannot adjust the damper actuator so that when the accelerator pedal is pressed, it does not open completely, and when released, it does not close completely, then this is the reason for replacing it. The price for it starts at 200 rubles. For a Nexia car costs from 180 rubles. The price of a LANOS throttle cable is from 250 to 600 rubles.
We repaired a VAZ 2110 car, on other models the removal and adjustment procedure is similar and not complicated, but when setting up, the help of a second person is needed to press the gas pedal.
Replacing the throttle cable:
- At the beginning, from the passenger compartment, use a screwdriver to push the end of the cable so that it comes out from the finger of the pedal lever, and remove it.
- Further, under the hood, next to the throttle valve, there is a drive sector, on which the cable is clamped. Turn this sector until it stops and detach the drive cable itself from it.
- The next step is to remove the protective cap at the end of the cord (1). Hold the cable sheath fixing nut (3) so that it does not turn and unscrew the nut (2). Next, we remove the cable from the bracket slot.
- We pull out the cable in the direction of the engine compartment, it will come out of the hole that goes into the passenger compartment.
This completes the dismantling. In order to install a new cable, follow the same steps in reverse order. After installing a new accelerator cable, it needs to be adjusted. Let's consider the order of execution further point by point.
Throttle Actuator Adjustment:
1. We let the clamps on the connections of the intake pipe (1) and the throttle body, as well as at the joint of the hose of the large circle of crankcase ventilation and the fitting (2), which is located on the cover of the block head.
2. With the gas pedal fully depressed, the throttle should be in the fully open position. (You will need your partner's help for this action.)
3. When the gas pedal is fully released, the throttle valve should be fully closed.
4. If steps 2 and 3 are not followed, the throttle cable needs adjustment.
5. If, when checking the adjustment, it is revealed that the damper does not open completely, then you should lower the nut on the bracket, the second from the end of the cable, and tighten the first nut until the desired effect is achieved.
6. If the throttle valve does not close completely, then the opposite should be done, namely, lower the first nut from the end of the cable and tighten the second nut.
When you achieve full opening and closing of the bulkhead by pressing and releasing the accelerator pedal, you have performed the adjustment of the throttle cable.
Cleaning the throttle and throttle body on a Nissan Almera:
WHA
