94 s10 blazer 4.3 vortec,idles pretty good when gets to operating temp and i hit gas it sputters real bad if i mash it it will come out of it just for that moment ,no check engine light. has new gm fuel pump,relay,filters spider unit,cap,rotor,coil,plugs ,wires,battery,alternator,egr, dont no what else might be expt maybe exuast has good fuel psi and spark some outside help would be nice cause i've bout lost it
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throttle position sensor, or check to make sure you have vacume going to the map sensor. Alot of times the outlet on the throttle body gets plugged and there is no vacume at the map--causes it to die. unplug the throttle position sensor and then rev it up and see if its better.
How is it running before it quits onyou. This could be the culprit of an egr valve. How many miles on thevehicle. The egr seems to die on a certain mileage pattern. Also youcould start by cleaning the egr valve before replacing it. This couldvery well help the situation, but this is just a guess. Hope thishelps!!
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