Question about 1997 Plymouth Grand Voyager

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Misfire in 97 voyager,P0300 and P0304,HELP! Need 2 get inspection

I have a 97 plymouth voyager. I have 2 codes being read. P0300 and P0304..random misfire and misfire in cylinder 4. We have replaced spark plugs,wire set,dis. cap and rotor. Also ran injector cleaner,did an oil change/filter. Reset the computer and witin 80 miles the check eninge light was right back on. Same codes...what do we do now??? I got to get this inspected. It's stopping from passing.

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  • babyskyler20 Apr 25, 2010

    we got rid of the random/multiple misfire code..now we still have misfire in cylinder 4..any ideas???

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  • Plymouth Master
  • 6,674 Answers

I'd have fuel pressure checked, and at the very least, replace fuel filter. Not unusual to get multiple misfire codes due to low fuel pressure, thus starving cylinder(s), and causing the misfire code(s).

Posted on Apr 25, 2010

  • Mike Butler
    Mike Butler Apr 25, 2010

    What was the result of the fuel pressure test? Does the engine appear to have a miss? What engine, 3.0L, 3.3L ?

  • Aurelio Santucci Jun 02, 2012

    check your injectors themselves pull them out and use an ohm meter and make sure the number 4 injector has a reading if it doesn't there is your problem..

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