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Engine stutter

Discussion in '1st Gen. Tacomas' started by LanceKTM950, Jun 8, 2012.

  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. 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. 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. hossmaster

    hossmaster Well-Known Member

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    League City, Tx
    Was a PreRunner, now it isn't
    is the tailpipe sooty?
     
  5. LanceKTM950

    LanceKTM950 [OP] Member

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    Very....
     
  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. 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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