1989 Toyota Pickup won't go over 2000 RPM

Check your exhaust to see if it hot at an idle. If so the cat is plugged up. Have you replaced the fuel filter. It is on the left side of the block right above the oil filter.

Hello,
my truck starts fine. Idles fine. But once I step on the gas and get to 2000 rpm. It seems as if I am running out of gas? I have replaced the fuel pump. Fuel pump relay. And temperature sensors.
Last year I replaced both oxygen sensors? Could it be my cataltic converter?
Ronnie
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Yes I have also changed the fiter.

Ok if there is no more help on this I will close the thrend? Thanks to thoses who trie to help.
Problem is still there.

Ok, I will end this tread with the answer.
After replacing everything on the fuel system.
The last thing I replaced was the fuel regulator.
My truck runs fine.