Question about 2005 Nissan Sentra

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2005 nissan sentra

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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  • Roberta Smith
    Roberta Smith May 11, 2010

    interesting check... perhaps start with what the problem is... other then the check engine light being on. if you live in the states drop by an autozone and have them read the codes. post the codes here when you get them.



    Robert

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If the car is running fine give it no concern. for many vehicles the check-engine light comes on and won't go off. most of the time people take them to the shop. if the guy is honest he will tell you that all he had to do was reset the computer. but most of the time it will come back on after you drive it about a hunderd miles.
as long as its running fine, leave it alone. it's like my grandpaw said if it aint broke don't fix it. good-luck ray

Posted on Jan 16, 2009

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emissionwiz
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SOURCE: 2005 nissan sentra check engine light

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

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