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v6 engine runs perfect for 30 miles then starts ,run eractic or pulsating ,like turning switch on and off. has 135,999 miles
could be fuel pressure or spark. you need a shop to look around in the computer for freeze frame data to see what has failed.
Common Problems > Nissan Frontier
Q&A > Nissan > 2001 Nissan Frontier
Q&A > Nissan > 2004 Nissan Frontier
Q&A > Nissan > 2003 Nissan Frontier