Question about 2005 Nissan Sentra

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2005 nissan sentra check engine light

Okay i'm just about fed up with this car. I had the thermostat and the head gaskets replaced, as well as the spark plugs but the check engine light won't go off. I thought it was my altenator, but I did the head light check* for that, but it's not the problem. I have a big trip this weekend and i want to be sure i'm safe.

*the check is simply this...while it is dark drive around the block and when no one else is behind you tap your brakes if the headlights dim severly it is your altenator and the car is pulling too much on the battery*

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The blown head gasket most likely damaged the oxygen sensors, and this is the cause of the check engine light, have a Kragen auto or Auto zone do a trouble code test, it is free. the oxygen sensors will not cause anything but slight increase in fuel consumption and of course that irritating light in the dash..

Posted on Jan 16, 2009

  • patty
    patty Nov 27, 2013

    Could it be the fuel pump

  • patty
    patty Nov 27, 2013

    So I shouldn't change the fuel pump. Had the code test done twice and light came back on

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