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Joined: Aug 2004
Posts: 415
Senior Member 2000 Toyota Celica GT
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Senior Member
2000 Toyota Celica GT
Joined: Aug 2004
Posts: 415 |
how come it only makes its 'roar' when the car is in gear and accelerating. when i just floor it in neutral it doesn't go rawr
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Joined: Jun 2004
Posts: 1,694
Metal Storm 2040 2000 Toyota Celica
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Metal Storm 2040
2000 Toyota Celica
Joined: Jun 2004
Posts: 1,694 |
Because the throttle body's valve has to open to suck in air so the engine can work, so when you floor it, the valve opens and you hear the air coming into the intake. When idling the valve is only creeked open so you hear a faint sucking noise at idle. Plus air has to be HITTING and passing through the intake to make the noise, at a stop there is no air pushing into the intake as it was in motion.
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Joined: May 2004
Posts: 2,971
Boobie Vision 2000 Toyota Celica
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Boobie Vision
2000 Toyota Celica
Joined: May 2004
Posts: 2,971 |
^^^^ ![goodjob goodjob](https://celicahobby.com/forums/images/graemlins/celica/goodjob.gif)
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Joined: Jun 2004
Posts: 1,694
Metal Storm 2040 2000 Toyota Celica
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Metal Storm 2040
2000 Toyota Celica
Joined: Jun 2004
Posts: 1,694 |
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Joined: Oct 2004
Posts: 52
Member 2005 Toyota Celica GT
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Member
2005 Toyota Celica GT
Joined: Oct 2004
Posts: 52 |
how come it only makes its 'roar' when the car is in gear and accelerating. when i just floor it in neutral it doesn't go rawr i wondered that myself. good lookin out polykarb ![thumbsup thumbsup](https://celicahobby.com/forums/images/graemlins/celica/thumbsup.gif)
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Joined: Jan 2004
Posts: 1,227 Likes: 1
Specialist 2002 Toyota Celica
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Specialist
2002 Toyota Celica
Joined: Jan 2004
Posts: 1,227 Likes: 1 |
Because the throttle body's valve has to open to suck in air so the engine can work, so when you floor it, the valve opens and you hear the air coming into the intake. When idling the valve is only creeked open so you hear a faint sucking noise at idle. Plus air has to be HITTING and passing through the intake to make the noise, at a stop there is no air pushing into the intake as it was in motion. beat me to it ![tongue tongue](https://celicahobby.com/forums/images/graemlins/celica/tongue.gif)
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