KA suffocation problem @2000 rpm

[carps13guy]

my 91 240sx has 180 thousand grandpa driven miles on it and operates perfectly except when the motor reaches 1500-2000 rpm there is what feels like turbo lag, (no turbo, i wish!). i was wondering if this has happened to anyone else with a high mileage ka24de engine, and if so what was done to resolve it, thanks.

[IDRFT95S14]

i had something like that happen to my s13 but mine only has 118k on it ,but i figured mine out it turned out to be a bad tps sensor , and lag only did it when i would go to work in the morning and just drive normal ,i had to run it like 15 minutes or so or it would do it on the way to work, sometimes it even died if i didnt run it befor leaving. well i thougth this migth give you an idea theres a lots other people that could give you helpfull answers thats how figured mine out

[ikilledbambi]

have u checked ur engine grounds? only other thing i can i think of is to clean ur IACV or ACC. I'd check all your all ur vaccum hoses. But probably is a engine or ecu ground problem

[louisb323]

Check the EGR valve.