i have a 1993 s10 blazer with 4.3 vortec motor with tbi. idles fine, but when give 1700 to 2000 rpms the engine sputters almost dies. replaced all spark plugs and wires and cap and rotor. cleaned all o2 sensors and no vaccum leaks. any ideas?

 

Idk but I'd sure like to know what causes this, my '04 does the exact same thing.

 

I had a similiar issue with my 2002. The MAF wasn't getting the right amount of air.