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Bucking when pulling out or under load.

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Old Jun 20, 2021 | 04:57 PM
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Default Bucking when pulling out or under load.
When pulling out or going up a hill when you try to give it the beans the truck jumps, kicks, coughs, and sputters. However when you get up to speed it doesn't do that or if you lightly get on it it doesn't buck. The problem is semi-intermittant I just replaced the upstream o2 sensor and seems to have made it worse! I'm pulling my hair out! I don't know what to do anymore. 1998 Dodge Ram 1500 with the 5.2. Please help!
 
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Old Jun 20, 2021 | 05:05 PM
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Have you pulled codes? Are you getting a CEL?
 
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Old Jun 20, 2021 | 06:05 PM
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What brand O2 sensor?
 
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Old Jun 20, 2021 | 06:35 PM
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What brand O2 sensor? Sometimes it's the TPS. You have a scan tool that can read live data?
 
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Old Jun 21, 2021 | 01:24 PM
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Originally Posted by Keith_L
Have you pulled codes? Are you getting a CEL?
it's not throwing any codes at all. No lights are on in the dash.
 
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Old Jun 21, 2021 | 01:25 PM
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Originally Posted by MoparFanatic21
You have a scan tool that can read live data?
Yes I have a scanner that can read some live data.
 
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Old Jun 21, 2021 | 05:14 PM
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Originally Posted by DeLoreandude
Yes I have a scanner that can read some live data.
Look at fuel trims, O2 sensors, and TPS sensor % and volts if you can
 
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