can not accelerate

2009 TOYOTA VIOS
25 MILES
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ANNERIANN
  • MEMBER
  • 3 POSTS
- can not accelerate
- high idle up 3000
- usually when Im in traffic the rpm down to 300 to 400 rpm

Please help me to detect the problem please thanks
-i already change the servo but still the same then i clean the servo and the throttle but still the problem occurred. It started good when in the normal temp. But when I stuck in a traffic it begins to drop to 200 to 300 rpm. When I step the gas the car is hard to move.
Jun 29, 2013 at 9:50 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,240 POSTS
Since this happens in traffic when you are stopped, are you sure the engine isn't heating up? I would check the air filter to make sure it is not clogged. Also we should run the codes to see what comes up.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please run down this guide and report back

Cheers
Jul 6, 2013 at 1:07 PM
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ANNERIANN
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  • 3 POSTS
No sir , just idle down n the car is vibrate due to low rpm
Jul 6, 2013 at 1:11 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,240 POSTS
I feel it is something simple. Check for engine vacuum leaks and check the idle air control valve (IAC). The IAC is what regulates the engine's idle. It could be going bad.
Jul 6, 2013 at 1:12 PM
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ANNERIANN
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I will check the iac , my new mechanic told me about cam shaft postn sensor? Do you think that is another problem ?
Jul 6, 2013 at 1:18 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,240 POSTS
If the engine is running good other than the idle issue, I would say that the cam sensor is fine.
Jul 6, 2013 at 1:32 PM
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CHARLESAW
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  • 2 POSTS
I having the same problem with u

I started my vios 08.. waited for a few min, disengage parking brake n engage to D and step on acc.. car seem very sluggish to move.. I step acc even harder but same thing. I stopped the car and tried again. . This time I do quick taps on my accelerator. . Car move slowly and then everything come back and the car moves off normally again.

I having the above problem. really cant drive. Send for repair, my car stuck in garage for 4days , the repair man told me
he change something everyday and cant solve the problem. now have change and try almost all the parts test. but cant solve.

I dunno wats is the problem....can someone help ?
Feb 19, 2014 at 4:14 PM
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FULLWORKSAUTO
  • MEMBER
  • 1 POST
I had this problem and it was the throttle actuator needed to be replaced FYI. I found a new one for $167.00 on Ebay
Oct 27, 2014 at 3:29 PM
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