car starts idling up and down till it just stops

[crubalcaba]

I have a 90 lumina and just recently it started acting up on me .
(The confusing problem )
starts perfect runs good for 4-5 miles
then the car starts idling up and down till it just stops .better yet it dies!
it doesnt matter wheather or not you step on the gas.
it feels like it aint getting enough gas and when it stops it doesnt turn on
it just keeps trying to start
after about 10 mins it turns back on

I have already put in a new fuel pump, fuel filter, radiator, m.a.p sensor, air idle sensor changed the spark plugs and wires, also did a fuel injector cleaning and i still have the same prob exactly the same prob i really am running out of money and i already did a diagnostics test pls tell me where to go from this cause the mechanics are clueless from midas and firestone.

[amac209]

if your gonna go to a shop take it to a cheby dealership they have access to bulitins for this problem. there could be a number of things causing this i wouldn't recoment throwing parts at it thats too expensive. try unplugging the O2 sensor it might be shot and killing the engine when it goes into closed loop. what was checked when you did diagnostics?? temp sensor? this almost sounds like a computer problem to me but don't run out and buy one because i told you to get it checked out. unplug the ecm(computer) and check the wires going to it i bet they're all corroded. another thing you could try is to give the computer a good smack when it starts acting up.