Why is my Ford Focus having trouble with acceleration?

I own a 2000 Ford Focus and sometimes it squeals during accelaration, followed by jerking, as if it's not getting enough fuel. I've replaced the EGR valve, catalytic converter and O2 sensors. The air filter, spark plugs and wires have been replaced and so has the PCV valve. The check engine light remains on even after it's been turned off. Should i replace the fuel injectors and filter?Why is my Ford Focus having trouble with acceleration?IT'S A FORD FOCUS!!!

It was actually determined that the Ford Focus has so many problems it shouldn't even be on the road!! They are junk!!!Why is my Ford Focus having trouble with acceleration?
i would change the gas filter first, but with the check engine light being on, have auto zone check it for you. i dont believe i ever saw a light stay on after you turn the ignition off. better have it checked, sounds like a short somewhere.Why is my Ford Focus having trouble with acceleration?The jerking could be the fuel filter, but I doubt that it's causing the squealing. As for the check engine light, disconnect the negative battery terminal for 10 minutes, then reconnect it. It should be clear at that point. If it throws the light on again, go to Autozone or somewhere like it where they read the codes for free and post them along with the current problem. Good luck!Why is my Ford Focus having trouble with acceleration?
Squealing is usually associated with a loose drive belt, check the tension. If it slips bad enough it will throw off the engine and put up red flags to your cars computer.Why is my Ford Focus having trouble with acceleration?no you should say **** you to the stupid ford and get a nice CHEVY!Why is my Ford Focus having trouble with acceleration?
whats the diagnostic trouble code for your check engine light, as your vehicle is what is called obd2 it could be almost 2000 different codes, without knowing the code, it could be anything, and guessing correctly isn't likely. once you know what the code is, and what emmisions system is affected on your vehicle, you will have pinpointed the area causing your problem.
ITS A FORD (there's no fixing that)