Loss of power to the throttle?

Hi,

Wow, you have already done a lot. Have any of the things you've done made a difference? Also, when it shuts off, does it restart right away, or do you have to wait?

Anytime there is a loss of power, as described, I think of a plugged or partially plugged catalytic converter. Have you noticed any rattling from under the vehicle or strange sounds or odors from the exhaust? Take a look at this link and let me know if you feel anything mirrors what you experience:

https://www.2carpros.com/articles/bad-catalytic-converter-symptoms

As far as the fuel pump is concerned, before I would go to the trouble of replacing it and the filter, I would recommend checking fuel pressure.

Here is a link that explains how it's done:

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

You will need a fuel pressure gauge to do this, but if you don't have one, most parts stores will lend one to you. Also, I attached the manufacturer's fuel pressure specifications below.

Let me know.

Take care,

Joe

See pic below.

Hi,

If the key fob was damaged, it wouldn't start. It would set the immobilizer and prevent it from starting.

I went over your first post again. The idea that the engine RPMs won't go higher than 4K is interesting. When you reach that point, does it feel like a rev limiter has been reached or does it just won't go higher? I'm wondering if there is a timing issue.

Let me know.

Joe