Question about 1997 Nissan Maxima

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When my car starts to move forward and hits first gear it switches quite hard, a noticeable jolt happens. also the engine light is on and i took it to a dealer and they said i have to replace a kock sensor

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A snatching shift indicates low fluid. Put the car in park and with the engine running check the level on the transmission dip stick. If low you can top it up by adding extra fluid via the dip stick tube: add about a pint at a time and check the level between top ups. The knock sensor might have been triggered by heavy shifts so I would reset the error code and run the car with a full transmission and see if the code comes back. If the knock sensor if triggered the ECM on most modern cars may put the transmission into a limp home 'safe' mode. With luck in 1997 such things were yet to be enacted. If so just make sure the timing and all functions are OK on the engine.

Posted on Jul 22, 2010

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You might need the knock sensor, but you would never know it was not working if it was not for the engine light on, the knock sensor control the ignition timing for the engine that sensor has nothing to do with the way it shifts gear's, I would have it check out before it becomes a major repair, could be some thing like a bad sensor in the transmission.

Posted on Jul 22, 2010

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The "knock" sensor would make it run rougher

Posted on Jul 22, 2010

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