newbee needs help !!!!!!

[bottlebaby]

ok all my daily driver is giving me fits...

you drive it down the road and it starts bucking and stumbling and then it dies.....sometimes starts right back up and sometimes very hard to get started....it has not blown a code ..i have changed the following parts.....

crank sensor
temp sensor
fuel filter

i have tested the following parts...

fuel pump = 40 at idle after 15min of running....it jumps to 45 when you blip the throttle....and when you powerbrake it...it jumps to 45-48 and then stumbles and dies...

coil pack = maintains spark all the way through the stumbling process (doesnt quit sparking)

fuel injectors = 12.8 -12.9 ohms all six.....

the car idles fine ........when you try and drive it or lightly power brake it...it stumbles and dies.....

what am i missing or what have i overlooked ??????

thanks in advance for all you help and ideas.....

bottlebaby...

[bottlebaby]

sorry my bad.......

1992 chevy lumina 3.1......auto......

[torq455]

EGR valve stuck open? Bad throttle position, MAP sensors. Bad gas?

[97cutlas$upreme]

do you have a maf? that ended up being the problem on mine

[torq455]

on a 92 3.1?! no