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2002 Nissan Frontier Question: complete tune up, no codes, engine stalls and runs rough

 

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nissan..., 4 Cylinder, Miami Beach, FL, May 24, 2010, 10:30
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i have a 2002 nissan frontier 4cyl with 90,000 miles. i had the check engine light on for some time but never had any problems. i decided to get a diagnostics instrument. in turn i got the p0400 code, egr emissions malfunction. i didn't pay much attention to it until the truck started idling irraticlly and eventually started stalling. i looked into the EGR system and noticed the a few damaged vacum hoses. to my delight, after changing the hoses and checking the EGR valve(o.k.) the code dissapeared. i also gave the truck a tune up (air and fuel filters, spark plugs and wires, cap and rotor, oil still good.

HELP! now, i have no codes showing up and my truck is still stalling and idling rough. sometimes the engine runs smoother than others but it will always stall eventually.

i'm looking into evap canister, vent control valve, etc. WHY do i have no codes???

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  • Answer #1

    Visitor, September 23, 2010, 12:57

    Did you find out what is wrong?
    I have 2001 nissan frontier, 4cyl. Following your path.

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