hi i have a 2000 chevy blazer that will run as long as im going around 40 mph but if i slow down to around 25-35 mph it will quit
but then if i let the pressure off the fuel line and prime the air intake with gas it will go again and i have no ideal what is wrong with it if any of you have any ideal's about it please write back on here

 

Little unclear. Starts fine normally, drives fine at forty, foot of gas stalls and will not restart normally. Pure gas down throttle body restarts and runs? "Pressure off the fuel line" I don't know what that means. Are you bleeding off the shrader valve?

 

Could the fuel filter be plugged up...when drawing on engine it pulls enough to flow...let off and it stalls.

 

Yeah, that'd be the first thing I'd try... If not do you think the throttle position sensor would do something like that? Perhaps check out the fuel pump as well.