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Anonymous
Anonymous Posted on Jun 09, 2010
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Rev count for 2009 corolla pro. goes up when engine starts even when the car is not moving. Is that normal?

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  • Posted on Jun 09, 2010
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High idle indicates that the engine most likely has a vacuum leak. This could be due to many causes; cracked hose or hoses, bad gaskets..ect. Hard to say exactly without more info, but you can open the hood and inspect the vacuum lines for damage or cracks. It is a 2009, so it probably is not something major.

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  • Posted on Jul 15, 2010
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The engine has a 3 stage idle, meaning that it will idle as high as 2000 RPM and then go to 1500 RPM, before going to low idle at about 900 RPM.

I had the same "problem with my 2007 Camry and with my current 2010 Matrix. Anyway, it's normal.

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Unlikely to be vacuum lines as they throw codes and cause the Engine Malfunction Light to be lit.

You need a local auto electrician with a pro grade scan tool computer to diagnose the ECM, Powertrain Control Module, plus all the modules, sensors and the computer communication network between them all. It can even record what happens when you get to a hill and play it back!

https://www.google.com/search?q=auto+electrician+near+me

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