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bucking, poor acceleration

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Old 07-07-2014, 08:06 PM   #1
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Default bucking, poor acceleration

I have an 04 f150 with about 90k on it. When driving once I hit 4th gear it doesn't want to accelerate unless I'm into the gas more than I should be. Example.. get to 45mph and try to slowly gain speed, the rpms wont rise and the truck bucks. Torque converter maybe? Just had to change my fuel pump drive module, thought maybe that would help but no luck. Any suggestions?
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Old 07-07-2014, 08:11 PM   #2
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Are you on the original spark plugs?

Also could very well be the catalytic converters.
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Old 07-07-2014, 09:23 PM   #3
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Quote:
Originally Posted by jdollar330 View Post
I have an 04 f150 with about 90k on it. When driving once I hit 4th gear it doesn't want to accelerate unless I'm into the gas more than I should be. Example.. get to 45mph and try to slowly gain speed, the rpms wont rise and the truck bucks. Torque converter maybe? Just had to change my fuel pump drive module, thought maybe that would help but no luck. Any suggestions?
Def the plugs.
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Old 07-07-2014, 10:41 PM   #4
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Is it sparkplug night?
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Old 07-07-2014, 11:10 PM   #5
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Spark plugs are the number one issue that everyone misdiagnoses haha
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Old 07-08-2014, 07:22 PM   #6
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no codes??????
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Old 07-08-2014, 11:59 PM   #7
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Default hey try this


Last edited by jclen; 07-09-2014 at 12:07 AM.
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Old 07-09-2014, 12:01 AM   #8
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Default or this


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