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Sputtering in 3rd gear

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Old Jan 15, 2019 | 12:37 AM
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From: Cedar Lake, IN
Sputtering in 3rd gear

1991 F-150 302/E4OD

Truck accelerates fine through 1st and 2nd gear. When it gets to 3rd, it will sputter, kind of acting like its misfiring. Take my foot off the gas, hit it again and then it accelerates normally. Only does it in 3rd gear. Trans was rebuilt so I'm hoping it's not a trans issue. Any idea on causes? No codes.

 
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Old Jan 15, 2019 | 10:22 AM
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From: south louisiana
Have you changed the fuel filter lately ?
 
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Old Jan 15, 2019 | 11:51 PM
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Originally Posted by baddad457
Have you changed the fuel filter lately ?
It hasn't been changed since being purchased.
 
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Old Jan 16, 2019 | 07:29 AM
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I would start with that then.
 
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Old Jan 19, 2019 | 01:22 AM
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Originally Posted by baddad457
I would start with that then.
I will check it but how would that relate to this? If it's a fuel issue, wouldn't it do this issue in every gear and not just a particular one?
 
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Old Jan 19, 2019 | 03:16 AM
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The engine uses more fuel with increasing load, and the load increases when running in higher gears. If the fuel flow can't keep up with engine demands, it will stumble.
 
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Old Jan 19, 2019 | 10:43 AM
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Originally Posted by xlt4wd90
The engine uses more fuel with increasing load, and the load increases when running in higher gears. If the fuel flow can't keep up with engine demands, it will stumble.
Ditto, what he said.
 
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