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2006 Nissan Altima. (Nissan)
2006 Nissan Altima. (Nissan)

Lou's Garage

Why won't my 2006 Nissan Altima fire up? Add to ...

Sometimes when I try to start my 2006 Nissan Altima SE, it makes a skipping sound like it isn’t getting gas – and just keeps turning over, but won’t fire up. It doesn’t do it all the time, but when it does, it won’t start until later. The car runs fine otherwise. Could it be something wrong with the fuel filter, lines to fuel or injectors? – William

The symptoms you describe suggest a familiar failing part used on many Nissans in both its four- and six-cylinder engines. The engine’s crankshaft and camshaft sensors employed on your car are identical and problematic. The check-engine light is commonly (but not always) illuminated, indicating that a code P0340 and/or P0335 is stored in the powertrain control module (PCM). When present, these codes denote that one or both of the sensors are not communicating with the PCM. Surprisingly, the car may still run, albeit poorly with only one of these sensors operational, as the single functioning sensor will compensate for its failing sibling.

Symptoms of a faulty camshaft or crankshaft sensor are poor fuel economy, stalling, difficulty starting when hot and finally, a no-start condition.

When no other obvious tune-up or regular maintenance items are suspect, you should have your service provider take a look at these sensors and replace if even remotely questionable. Nissan has updated these parts and they are best sourced from the dealer and changed as a pair.

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