If the fuel is old your vehicle will run rough and not accelerate normally- may even cut-off or mis-fire some and lose power. ( Gasoline deteriorates into a varnish and solvent mixture in the fuel tank if it sits for many months )
My pathfinder is running rough and mis-firing a little right now, today, as I type this- the problem it appears to have is electrical current or voltage is too low to the ignition system. The battery was low so I jump started the PF and it ran great as long as I left the battery charger/booster hooked up to the car's battery and had the charger switched to 40 amp charge or 200 amp boost ( for starting purposes only) . As soon as I pull the charger off the battery the car runs rough again -- put cables back on and it runs fine. So, charging the battery up and checking the alternator and related components in the charging system in order to fix the rough running.
First try and spray down the spark plug wires with some water from a spray bottom and see if the start arcing (you must have the truck running at all times to test this). If not that then clamp off the return fuel line and see fi anything vchanegs. let me know from there.
plugs and wires r good put a new fuel pump n filter on air filters gud n still have da same problem when n park it idels at 1- 0 rpms sputers and misses alot like not enough gas is gettin threw then time 2 time it smells like its gettin 2 much fuel when i drive from dead stop gets 2 2.5 rpms n starts losen power gets 2 20-30 mph n thats it starts sputtering n missing real bad. sum say AMF senser others say fuel preasuer im stuck idk wut it is any1 know wut could b goin on
plugs and wires r good put a new fuel pump n filter on air filters gud n still have da same problem when n park it idels at 1- 0 rpms sputers and misses alot like not enough gas is gettin threw then time 2 time it smells like its gettin 2 much fuel when i drive from dead stop gets 2 2.5 rpms n starts losen power gets 2 20-30 mph n thats it starts sputtering n missing real bad. sum say AMF senser others say fuel preasuer im stuck idk wut it is any1 know wut could b goin on
did you ever figure out what was wrong with your car? I have a 99 pathfinder also and replaced the fuel pump and filter and battery. It sputters when I am giving it gas still so they made sure their ws no air in the fuel lines and it still does it code that came up was for something electrical can you help
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