hey i have an 01 z24 and when im drivn it stutors like if it a miss fire, this usually happens around 1500 and 2000 rpm n more when going uphill or focing the engine. What can this b? i recently changed the furl pump n filter but same problem even mpg went up =).. im thnkn if it can b a vacuum prob, sparkplugs, injectors, and doubt its timing belt but need help plz

If its an auto it can be torque converter shutter.



PRND321 Till I DIE
Old Motor: 160whp & 152ft/lbs, 1/4 Mile 15.4 @88.2
M45 + LD9 + 4T40-E, GO GO GO

no its a five speed... forgot to mention it hapens mostly on 3rd to 5th gear never on first and rarely on 2nd.... any ideas thx