What hose is connected to the throttle body?
Connect the PCV and evaporative hoses to the throttle body. Connect the air hose and tighten the clamps. Connect the accelerator cable and check the cable deflection. Cable deflection should be 0.04–0.10 in.
What are the symptoms of a stuck throttle body?
When a throttle body is not functioning correctly, you’ll usually notice a distinctly poor or very low idle. If the problem is really severe, you might even begin stalling when coming to a stop or when the throttle is quickly pressed.
What happens if air intake hose breaks?
If the hose isn’t getting enough air to the engine due to a leak, then drivers may notice their car has a fast or rough idle. In more extreme cases, like debris entering the intake hose or the engine isn’t getting enough air for long periods, it can even cause your car to stall out.
Should throttle body close completely when off?
Often deposits become thick enough to prevent the blade from closing all the way – even when you take your foot completely off the gas or put your car in idle. In that case, the throttle body blade will be able to close entirely when your car enters idle.
Can you drive with a broken air intake hose?
Air intake hoses are used to send controlled air to the internal combustion engine intake manifold. Worn or cracked air intake hoses can leak, which can impact vehicle operation negatively.
What are the effects of a bad throttle body?
When a throttle body is not functioning correctly, some noticeable characteristics may be poor or very low idle. This can include stalling when coming to a stop or very low idle after starting, or even stalling if the throttle is quickly pressed (resulting in the throttle body plate opening and closing very quickly).
What do you remove from a throttle body?
Step 2: Remove the air filter cover, mass air flow sensor, and intake tube. Remove the clips holding the air filter housing onto the base. Remove the connection or clips securing the mass air flow sensor to the lower intake hose. Step 3: Remove the air intake hose from the throttle body.
What happens to the engine when the throttle body is dirty?
When the throttle body is dirty, it lowers the engine RPM band, causing the engine to stumble and delay the time that the vehicle is supposed to shift into a higher gear. The engine idle is rough: Typically a dirty throttle body also impacts the way the engine idles.
Where is the throttle cable on a fuel injected engine?
On older vehicles, the throttle body of a fuel injected engine is operated by a throttle cable that is either attached to the gas pedal or to an electronic throttle control. The reason you need to consider this fact first is because electronic throttle bodies are calibrated with incredibly tight clearance on the throttle blades.
How did fuel injection change the throttle body?
Fuel injection systems have since then grown into finely tuned, electronically controlled and operated machines that have improved engine fuel burning efficiency by as much as 70% over the past three decades. The throttle body hasn’t changed much in mechanical design or in function since the early mechanical fuel injection systems were in use.