2002 toyota corolla idles fine, boggs down on accelleration

just as the title says, 214k great shape just wont get going more you mash the less it goes… fuel pump already replaced, can undo battery and take a while to reset feels to do fine then goes back to bogging down… TPS ? idle air control? hELP!!!

So when you reset the ECM, that seems to help? hmmm … I can’t see this being related to the IAC. But it could well be the TPS. That is fairly simple for a mechanic to check no go/go. Probably a good idea too, to have the fuel pressure measured when this happens, and a check for cat back pressure.

thank you!

I agree it sounds fuel related. Low fuel pressure or clogged injectors are the usual suspects.