Question about Toyota Corolla

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I have a 2001 Toyota Corolla Engine light on and stay When out side tempereture is cole. I pull out EFI fuse and put it back start engine and no Engine light over 70 deg. out side temp. It's come back in 55/60 deg. I took the car Auto zone for test and found code PO441. Please let me know how i fix it Thanks Shibli

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As with most cars today your car is fitted with a charcoal filled canister to trap fuel vapour emissions before they are released to the environment. In order to burn this temporarily stored vapour the engine computer opens a purge valve that is connected by a vacuum tube to the inlet manifold of the engine. The valve is only opened when the engine has warmed up. With the valve open outside air is drawn into and through the charcoal canister to carry the fuel rich vapours down the vacuum tube into the engine to be burnt. In your car the purge valve is being left open permanently and this means your car is struggling with all the extra air entering the engine. Solution: find the tube connected between the inlet manifold and the charcoal canister and disconnect it and block both open ends temporarily (duct tape) so that nothing can pass through it . This is only a temporary solution until you can replace or repair the faulty purge valve. When repaired open the vacuum tube connection again.

Posted on Sep 09, 2010

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