Throttle bog..

AJ/FormS said

In what gear? what rpm/what roadspeed? and is it always the same?

Help me understand this;
Lets say you are in Second gear at somewhere near 2000rpm. And you slam it to 80%. And the engine gets to work no problem. You hold it there for a bit, but as the shift-rpm approaches, you back off the throttle to 1%, and this is when the stumble shows up?
I mean this is what I'm thinking as I read your words.

If yes,
then pressure test your exhaust system.
If no,
Please clarify

Click to expand...

It happens in drive around 2000 rpm’s. In second gear I mash the pedal %80 to the floor and it’s accelerating nice and quick. I go to %100 foot to the floor I get the stumble like it’s out of gas (rough idle and ping then engine shuts off unless I lift off the gas) and it will go no faster or move other then the momentum it has already picked up. I then lift my foot off the gas back to %80 or lower and as I am lifting (decelerating) it picks up speed as if it was to the floor. It doesn’t matter how long I have my foot to the floor or how much I push the pedal down it does this. In each gear as well as idle.