Question about 2002 Nissan Sentra

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02 Sentra. Sometimes wont start when cold outside

Had checked by dealer, replaced vcv and canister, plugs, filters etc. stiil happening, any ideas???

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  • Anonymous Feb 04, 2009

    I have the same problem.Plug your block heater for at least 2 hours,but the problem will still exsist .I've replaced the air flow sensor, replaced the coolant tempature sensor beacause both do have an effect on cold starting,but still the same result. Now I know they had recalls on the crank sensor and it has been changed about 5 years ago, and will try to change this one again and see after

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Had the same problem with an 01...Found the air temp sensor off by 10 degrees and the plugs fouled..Replaced both and car starts fine..

Posted on Mar 22, 2014

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There is a technical service bulletin stating that if your car is equipped with a 2.5 liter engine that the ecm may need reprogramming.Contact your local nissan dealer with your vin # and they should be able to help u further.

Posted on Feb 06, 2009

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Its possible, that you crank angle sensor is failing. Also, that vehicle had a issue with the ECM/computer. Nissan put a set of foams inside of the ECM box to prevent the ECM from movement, however the glue that they used to attach the foams was causing the ECM to fail. The vapors from the glue would eat up vital circuits inside the computer causing failuer. I would go to your local dealer and provide them with your VIN nujber. With the VIN number, thay can check to ysee if the foam campaign has been doen and also the crank and cam angle sensor camaign. Nissan volunteraly replaced cam and crank angle sensors if the VIN number matches the campaign. Your ECM/computer is covered for 8years or 80000 miles. We are also starting to see timing chains getting stretched causing running issues, but you will have a "check engine light on" for cam angle sensor circuit. Anyhow, go to your local friendly NIssan dealer and have them run your VIN number to see if you have any open campaigns (crank and cam sensors, ECM foam etc.) Good luck and let me know what you find.

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