My name is ***** ***** I am a licenced diagnostic technician with over 20 years experience.
I will do my best to help you with your automotive problem. Please remember, I cannot see, hear or feel your vehicle which can make diagnosing very complicated and some vehicle require extensive diagnotics that require certain diagnostics computers that can not be done over a computer or phone.Please be patient as I am not online 24 hours a day, as I do work, but I do check my page every day.A positive rating is always appreciated for my time and knowledge to help you with your problem.
Have you performed a data stream check on this yet? to see what the sensors are doing when accelerating.
It sounds like either the tps has a flat spot in it, and you will need to do a voltage sweep to test it.
Or the mass airflow sensor is dirty or faulty. Regarding the mass airflow sensor, you can clean it to start with with a q-tip and some brake parts cleaner, but please be gentle as they are very fragile and can be broken easily.
Again the mass airflow will need to be tested with a scanner and monitored while snapping the throttle.
Also. please check for a cracked air snorkel tube because it there is a crack present, it will give bad maf readings as well.
If its worse when cold, make sure your coolant sensor is reading the right temperature.
A scanner will be necassary to test these items, but a visual check of the air intake tube and cleaning the maf sensor will be a good start.
LEt me know if i can assist you any further, and i apppreciate any positive ratings!