5.3 hesitation going up hill

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Mickey_7106

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I've been having this hesitation issue going up hills on city streets going under 30 mph. I dont know how else to explain in other than it feels like im flooding the engine and the note of the exhaust sounds like it's running on 4 cylinders( come to think if it i haven't checked if the stupid AFM is activating going up hill)

Anyways, quick scenario. Let's say im starting in a mostly flat road from a stop sign getting ready to climb up. Im on the street so im driving at a "normal pace". Going up hill in first and second gear it runs fine. Once 3rd hits after about 2 seconds the power feels like it goes flat, i start loosing momentum and if i give it a little more gas to keep going the engine sounds like crap. Eventually it will drop a gear if i keep pressing the gas more and more.


Anyone had a similar issues? I have an obdlink scanner, what should i be monitoring to try and diagnose this issue?

TIA
 

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