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2014 Silverado hesitation when accelerating from stop


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7 hours ago, pokismoki said:

did you add aftermarket airfilter,? try cleaning the MAF?

 

try driving in 5th instead of drive, then try using tow haul if it still hesitant?

Nothing aftermarket, truck entirety stock.

MAF cleaned and then replaced after strange temperature reading.

Manual shifts fine but starting hesitation still present.

Tow/haul doesn't have any effect, except higher rpm.

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9 hours ago, ic3man5 said:

You need to turn the engine off and with the key on push the throttle all the way down (WOT). It should be around 80-85%. Bottom should be around 10-20% I believe. You won't see 0-100%.

Okay, I got a reduced reading. There is a graph a few posts above yours that shows my absolute throttle position percentage engine-off but key-on and it goes from about 20-48%

When driving the percentage does go up higher than that range.

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2 hours ago, MisfireMagnet said:

Okay, I got a reduced reading. There is a graph a few posts above yours that shows my absolute throttle position percentage engine-off but key-on and it goes from about 20-48%

When driving the percentage does go up higher than that range.

Sorry I missed that, 2014 were known for bad grounds (especially the one right above the steering wheel in the dash). I feel you have too many intermittent issues here where I'd start questioning the scanner itself. Does the truck run to 5-6K RPM when you go wide open? 48% throttle would feel really really slow even if it hit those RPMs.

 

edit: Here is a video to compare to around how quick it should be gaining speed: 

 

Edited by ic3man5
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Just now, ic3man5 said:

Sorry I missed that, 2014 were known for bad grounds (especially the one right above the steering wheel in the dash). I feel you have too many intermittent issues here where I'd start questioning the scanner itself. Does the truck run to 5-6K RPM when you go wide open? 48% throttle would feel really really slow even if it hit those RPMs.

Yes, it will get to 6k rpm on the highway and the throttle position I have seen get to approximately 80% 

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