I have an 03 zr2 5spd s10 4.3 poor performance runs good on level ground but when you start up a hill it falls on its face but its like u take your foot off the gas and if you down shift and run hard like around 3500 to 4000 rpm ses light will flash and engine will get a dead miss but when u level out the miss goes away and no code stored any help would be appreciated
Parts changed
Distributor
Plugs and wires
Maf sensor
Fuel pressure regulator
Fuel filter
Catalytic convertors
Muffler
Intake gaskets
Parts changed
Distributor
Plugs and wires
Maf sensor
Fuel pressure regulator
Fuel filter
Catalytic convertors
Muffler
Intake gaskets