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Engine stutter

Discussion in '1st Gen. Tacomas (1995-2004)' started by LanceKTM950, Jun 8, 2012.

  1. Jun 8, 2012 at 1:17 PM
    #1
    LanceKTM950

    LanceKTM950 [OP] Member

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    My 2004 Crew Cab automatic has a bad stutter between 1500 and 2000 rpm, worse with a load on it. Once above 2000 rpm all is well again unless I have a lot of weight in it or am towing, then it continues to just above 2500 rpm. Doesn't cut out completely, and it's very uneven, not a consistant stumble. I'm thinking of replacing the plugs, then testing the coils, the fuel filter is new, it could be the airflow sensor...any suggestions?

    Thanks!

    Lance
     
  2. Jun 8, 2012 at 1:26 PM
    #2
    LanceKTM950

    LanceKTM950 [OP] Member

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    No, and from reading some other threads it's not the best, the stock filter is. Correct me if I'm wrong.

    Lance
     
  3. Jun 8, 2012 at 1:33 PM
    #3
    LanceKTM950

    LanceKTM950 [OP] Member

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    No tinkering other than adding trailer brake controller....I'll check that out by disconnecting the wires one by one...

    Lance
     
  4. Jun 8, 2012 at 4:20 PM
    #4
    hossmaster

    hossmaster Well-Known Member

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    League City, Tx
    Was a PreRunner, now it isn't
    is the tailpipe sooty?
     
  5. Jun 8, 2012 at 4:27 PM
    #5
    LanceKTM950

    LanceKTM950 [OP] Member

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    Very....
     
  6. Jun 12, 2012 at 6:48 PM
    #6
    LanceKTM950

    LanceKTM950 [OP] Member

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    Found and fixed the problem!

    Got new plugs and plug wires, when I pulled the plugs the center driver's side plug wasn't even snug, and the plug behind it was barely snug. With the new plugs and wires installed no more misfire!

    I bought this truck about 10k miles ago (now has 80k miles on it) at CarMax, seems their mechanics aren't any better than anywhere else's.

    Lance
     
  7. Jun 12, 2012 at 6:50 PM
    #7
    Brianz1001

    Brianz1001 Well-Known Member

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    too much to type
    plugs, wires my brother. you check those coil packs but dont think thats your issue. when was the last time you did a service to the throttle body? cleaned the fuel injectors,
     
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