Question about 2006 Nissan Altima

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Hi, I have a 2006 Altima with 31,500 miles. Recently, the engine start shaking when car is Idle but I still feel the shake when driving or at red lights. My second problem is a weird loud (humming) noise sometimes when I take my foot off the gas. Everyone seems to think it may be a whole in the muffler but I would appreciate any help. I am about to change the spark plugs but not sure if that will help the shake. Thank youm Bettie from NJ

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  • bettie_desca Sep 15, 2009

    the car is idling ok at about 900 cold. My friend did not want to increase the idle but I did change the spark plugs anyway and put the fuel injector. I am driving arount but I cant burn the gas fast enought. The car shakes less but still shaking and now I hear a crakling sound (very low) like you're opening an old rusty door. It is not consistent. I am still not sure of the sound the car makes sometimes when I take my foot off the gas pedal that souds like something is in it's throat.
    Thank you both DogIt and HotChevy for your response. It is appreciated.
    Bettie

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SCAN IT TO CHECK FOR FAULTY MASS AIR FLOW SENSOR.AND A TPS SENSOR.THEY WILL CAUSE ENGINE RUN ROUGH SHAKE.BECAUSE THEY WILL CAUSE PLUGS TO FOUL OUT .IF ALL IS GOOD.BOTH SENSOR CHECK OUT GOOD.CHANGE FUEL FILTER AND CLEAN FUEL INJECTORS.FILL GAS TANK UP.PUT A BOTTLE FUEL INJECTOR CLEANER IN FUEL TANK.DRIVE CAR AROUND TO ALLOW CLEANER TO WORK THROUGH TO CLEAN INJECTORS.BY IT BEING 31500 MILES.ITS TIME FOR FUEL FILTER AIR FILTER PLUGS AND WIRES CHANGE.AND ALSO THE.DISTRIBUTOR CAP AND ROTOR FOR EARLYS 90S MODELS CARS.

Posted on Sep 13, 2009

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  • Master
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You don't need to change the spark plugs since it has only 31.5 K. The plugs should last 60K. There is a an adjustment at the gas cable end at engine to increase the idle a little bit. You can increase rpm at idle to 600 RPM. Since your RPM at idle is low that why it is shaking at idle, red lights. Let me know it it is shaking at high speed ( 2500 RPM)

Posted on Sep 13, 2009

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