Question about 1995 Toyota Tacoma

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1995 Toyota tacoma 3.4 misfires under a load - 1995 Toyota Tacoma

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  • bmseymour Mar 04, 2009

    PLugs have a strong orange spark but not a blue fire. Will tach up but not under a load, it will stumble

  • bmseymour Mar 04, 2009

    Is there a sensor or module I need to look into?

  • bmseymour Mar 04, 2009

    Thanks I apppreciate it.

    This am when it was cold (15) it flooded, 1st time that has happened.

  • bmseymour Mar 04, 2009

    I have just replaced the plugs, wires were replaced approx 6 months before the trouble started. The problem started & has progressively gotten worse. Starts out smooth then when tacs up starts falling on its face.

  • bmseymour Mar 06, 2009

    Just to bring you up to date. We changed the fuel filter, no chg. Took it today to put on a machine. So far, come to find out we are running the wrong plugs, we should be running double electrobe plugs & not single electrobe. ( but this is what was given to us from the auto stores).. As soon as we get those in, I will update you. Per machine test I have a misfire on #2 cylinder.. Also they said if the plugs don't fix the trouble it is possible I may need to replace the mass air flow sensor. thanks for your help & as I said I will update, once the plugs are changed. Any other info you may have would be greatly appreciated.

  • bmseymour Mar 07, 2009

    will get that done. Thanks appreciate all the help.

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  • Toyota Master
  • 6,674 Answers

If tune-up, wires etc, haven't been done in a while, it would be a good place to start. When were they last done?

Posted on Mar 04, 2009

  • 3 more comments 
  • Mike Butler
    Mike Butler Mar 04, 2009

    Usually the parts stores like autozone & PEP boys will scan for free, which should tell you if you have a faulty sensor, but if you want to try a fuel filter replacement, if not done recently, then that is also a good inexpensive place to start.

  • Mike Butler
    Mike Butler Mar 04, 2009

    If you can talk someone in to a fuel pressure test, that would also help with diagnosis.

  • Mike Butler
    Mike Butler Mar 04, 2009

    I'm still leaning towards plugs & wires, but lets see what happens.

  • Mike Butler
    Mike Butler Mar 04, 2009

    O.k. now that answer has come in, lets try the fuel pressure & filter change, and get it scanned while your there getting your parts.

  • Mike Butler
    Mike Butler Mar 06, 2009

    Don't for get to erase codes once that's done to Give everything a fresh start.

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