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Engine stutter

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Old 06-08-2012, 01:17 PM   #1
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Engine stutter

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
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Old 06-08-2012, 01:26 PM   #2
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Quote:
Originally Posted by wolfpack_5150 View Post
all those mentioned sound like good places to start......ever run a K&N on it?
No, and from reading some other threads it's not the best, the stock filter is. Correct me if I'm wrong.

Lance
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Old 06-08-2012, 01:33 PM   #3
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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
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Old 06-08-2012, 04:20 PM   #4
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is the tailpipe sooty?
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Old 06-08-2012, 04:27 PM   #5
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Quote:
Originally Posted by hossmaster View Post
is the tailpipe sooty?
Very....
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Old 06-12-2012, 06:48 PM   #6
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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
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Old 06-12-2012, 06:50 PM   #7
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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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