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05 2.7 problem...sort of

Discussion in '4 Cylinder' started by danteisme, Nov 28, 2010.

  1. Nov 28, 2010 at 7:02 AM
    #1
    danteisme

    danteisme [OP] Well-Known Member

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    ok, so this has happened twice in the year and a half i've owned my truck. its really dumbfounded me. it happened just this week, then once in the summer. over the summer, we had a streak of like 5 days of no rain. so i rode my motorcycle and the truck sat for a good 3 days straight. when i went to take my truck out, it wouldnt turn over. made a strange sound, the best i can describe it is it sounded like when you crank a car over while performing a compression test on the motor. it sounds like no spark or fuel, its just cranking. so it did that the first few times, then it slowly started sputtering and cranked over, but was misfiring like no other. then it stopped missifiring, and then the battery light came on. this is all in a matter of less than a min. so i drive to advanced auto to get my charging system checked out. before i get to there, the battery light goes off. they check everything and its perfectly fine.

    now lets fast forward to yesterday, same situation. i had the truck sitting for almost 3 days, when to go start it and bam...the exact same thing happend. so i drove to advanced again with the battery light on but this time it stayed on until i got there. they checked it and everything checked out fine. as they finished up, the light went out again. this is very strange to me because any other time no matter the weather or conditions, i never ever have a problem starting up my truck. any ideas or what could be causing this?

    2005 2.7, 66K miles on it. every oil change i throw a bottle of fuel system cleaner, the air filter is new, still factory plugs. as for the chargning light...i really have no idea. i dont understand what could be tripping that light if the system tests out perfectly fine and have no issues at all.
     
  2. Nov 28, 2010 at 7:03 AM
    #2
    05RedTaco

    05RedTaco Nom Nom Nom

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    Still original battery?
     
  3. Nov 28, 2010 at 7:08 AM
    #3
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

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    Sounds like the battery won't hold a charge over an extended period of none running.
     
  4. Nov 28, 2010 at 7:14 AM
    #4
    danteisme

    danteisme [OP] Well-Known Member

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    yes still oem battery but the tests say its still fine as well. i didnt think it was the battery because both times this happend the truck still cranked, it just didnt sound like there was any spark or fuel present.
     
  5. Nov 28, 2010 at 7:25 AM
    #5
    epa4wd

    epa4wd Well-Known Member

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    IMO their battery test sucks, I went to replace a battery 3 times (not with the Tacoma) everytime their battery test would say its fine and they would not give me a new one under warranty. Ended up buying a battery someplace else.
     
  6. Nov 28, 2010 at 7:34 AM
    #6
    danteisme

    danteisme [OP] Well-Known Member

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    but if it was a battery not holding a charge, would the truck still crank away tryin to start?
     
  7. Nov 28, 2010 at 7:44 AM
    #7
    epa4wd

    epa4wd Well-Known Member

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    Depends on the battery level.

    But from your description, your problem sounds fuel related.
     
  8. Nov 28, 2010 at 8:08 AM
    #8
    The Shape

    The Shape Well-Known Member

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    Almost sounds like your fuel system is losing its prime. Not sure how that happens on a pressurized fuel injection system however.
     
  9. Nov 28, 2010 at 9:05 AM
    #9
    05RedTaco

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    Its your battery not holding a charge. Weak crank is battery related. Battery life is 3-4years, so you are ready for battery replacement.
     
  10. Nov 28, 2010 at 9:15 AM
    #10
    epa4wd

    epa4wd Well-Known Member

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    What leads me to think is fuel related is that he said that after the truck started it was misfiring, so I think the battery level is dropping because he kept cranking, so after the trucks starts the battery is a bit low (battery light comes on), then after driving it gets charged light goes off, and test at advanced auto shows no problem on battery.

    You could get a cheap voltmeter and check the battery before starting the engine for a couple of days, to see if the battery is holding charge or not.
     
  11. Nov 28, 2010 at 11:58 AM
    #11
    05RedTaco

    05RedTaco Nom Nom Nom

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    Too much cranking = too much fuel in combustion chamber = light misfire.
     
  12. Nov 28, 2010 at 12:00 PM
    #12
    epa4wd

    epa4wd Well-Known Member

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    true! you are right
     
  13. Nov 28, 2010 at 2:34 PM
    #13
    danteisme

    danteisme [OP] Well-Known Member

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    true, but why would it keep cranking with a no start condition to begin with? also, there was no CEL or anything like that.
     
  14. Nov 28, 2010 at 5:10 PM
    #14
    RedYoter10

    RedYoter10 Well-Known Member

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    Does the truck run perfect every other time? I guess I would start with a voltage test on the battery after it has been sitting for a few days, before you try starting it. Otherwise than that, maybe try 4 new plugs. My advice would be to use factory plugs, or a well trusted comparable brand. Keep us informed!!
     
  15. Nov 28, 2010 at 5:16 PM
    #15
    danteisme

    danteisme [OP] Well-Known Member

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    yeah it runs perfect besides a rattle i cant track down. no starting issues/power issues at all. next time i get the opportunity to let it sit for a few days, i'll check out the battery with a volt tester. maybe next weekend i'll pull the plugs and see what they look like, because i know that these plugs are good for at least 80-90K miles.
     
  16. Nov 29, 2010 at 4:07 PM
    #16
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

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    A weak or dead battery will still read +12V. You need to measure the AMPS
     
  17. Nov 29, 2010 at 4:29 PM
    #17
    danteisme

    danteisme [OP] Well-Known Member

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    i understand that, i just have a hard time thinking its the battery when it cranked and cranked no problem or hesitation. the engine turning over and firing is what hesitated.
     
  18. Nov 29, 2010 at 4:54 PM
    #18
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

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    Does yours have one of those transponder keys?
     
  19. Nov 29, 2010 at 5:04 PM
    #19
    danteisme

    danteisme [OP] Well-Known Member

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    nah, i just had a key copy made for like $4 so im going to assume not.
     
  20. Nov 29, 2010 at 5:13 PM
    #20
    A7XTaco

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    I know its off subject, but does this rattle happen to be around 2,000 RPM, or most noticeable in 4th gear around 40MPH?
     
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