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2005 Chevrolet Impala with code P0442. Jerking spit losing pressure when idle or accelerate

Vehicle: 2005 Chevrolet Impala

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The P0442 code is for the EVAP system small leak. EVAP small leak problem usually wont cause any driveability problem. There are many things that could cause the symptoms you describe. You should start with the basics like spark plugs and air filter. Also, you could try using high octane gas to see make any difference.

P0442 CHEVROLET - Evaporative Emission Control System Leak Detected Small Leak
Read more: https://www.autocodes.com/p0442_chevrolet.html

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