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Discussion Starter · #1 ·
I have an 08 1500 with a 5.7 i am having issue with. When I and driving at highway speeds it will randomly jump up and then back down in the rpms also when accelerating slowly at low speeds it will feel as if it is bogging down then jump in rpms and act normal i went to a dealer to have it scanned even tho it was not showing check engine and they said it showed nothing they did not drive it by the way. So I then went to the tranny shop they test drove it and said they were getting a forced limited rpm code saying it was the electronic throttle control system so I ordered that which is the whole throttle body replaced it and still the same thing please help any help is great thanks in advance
 

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Discussion Starter · #5 ·
I also thought that is what it is when in tow haul it won't do it a highway speeds but still does at low speeds and it happens to often to seem normal I can be on a flat road with no wind and it will still jump every minute or less
 
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