Question about 2000 Nissan Altima
5 weeks after purchase ( 110K miles ) on & off runs like 3 or 2 clys - code - Crank sensor circuit A - 8 weeks later -instal OEM crank sensor very small change - then install OEM cam sensor . now cranks a Long time and will eventually start - battery finally gets to low - Now new battery - wont start at all - re-install 2 old sensors -starts right up .BUT after 1-2 or 32 miles on & off from smooth 4 cyl. to rough like 3 -cyl -just like flips a switch ; normally runs smooth cold & at times will switch from rough to smooth in just seconds -or last hours . I am a old smart Mechanic .and hope someone out there is much smarter --PLEASE try to help me
And YOU took much to long to answer --BUT thanks for your attempt -
Posted on Sep 11, 2008
Does the check engine light flash or is it on when the car misfires?? Bythe way, Nissan has a new program available for your ECM/computer for the long cranking condition. Check with your local NIssan dealer. Also spark plugs are rated for 105K, You have 110K on it. Check your plugs and make sure, that you use NGK if they need to be replaced. Also, look at your overflow bottle. If its down, top it off to FULL mark and monitor the level for few days. See if it goes down in like a week. I have seen some headgasket problems, where the coolant gets into the cylinders and drown the spark plug, causing a misfire. Let me know what you find. Lets get to the bottom of this and lets fix it.
Posted on Sep 01, 2008
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Posted on Jan 02, 2017
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