Acceleration hesitation on cold engine

If this only happens when the engine is cold, then we need to check for a vacuum leak.

This is the most likely issue because when the engine warms up it starts to use the o2 sensor data and it can adjust for the additional air/lean condition so let's start with this guide and see if we can find a leak:

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

If there is no leak, then we are going to have to check for codes and then check the fuel pressure when this is acting up.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

These guides will walk you through this but let's start with this info and go from there.

Thanks

I don't think that is related at all. I am not sure what you mean by "electronic idle for the speed" because I think that is just a bar graph depiction of what your current milage per gallon is for the fuel. If you look just below it there is a number that is 13.7 which is your average fuel economy. The bar graph is just displaying the exact same info as the scale of the graph goes from 0 - 10- 20 which are the numbers above it.

So, while this number and graph will change when you press the accelerator, that is only because you are changing the fuel economy when you do so. This means it will not respond directly with you pressing the throttle unless you clear it and start the average over. However, once there are a lot of data points factoring into the average it will respond less directly to the throttle input.

This could be a throttle body issue, but we need to check for vacuum leaks first as I stated in the first post. Here is a guide that will help with this:

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

However, I am also attaching more info on this issue. If you cleaned the throttle body, then you need to relearn the idle. Please see the attached information for this process.

Sorry. The HDS is the scan tool that the dealer uses. You can reset the PCM using any scan tool that has that function. Basically, you need to wipe the memory in the PCM so that it forces it to relearn. You can do this by disconnecting the battery but that is also going to wipe out the emissions data and so you will have to drive it for a while to get these to run again. You will not be able to pass an emissions test until it relearns that data. If you don't have one in the near future, then you will be fine.