95 neon help please

i have a 95 neon with 160,000 miles the head gasget was done at 50,000 now after i start the car it runs good but then after 1/2 hr it starts ideling hi and fludders i have changed the map, idel air and cleaned the egr allso i have changed spark plugs,wires,coil pack,and timing belt i tested the thermasat it opened at 212 f so i proped it open but it still dosent help i have run out of options can anyone help thank you
sometime it codes out but this last time it didnt code

Does it do anything when you drive it? If so, describe that if you can.

I didn't see listed there in the areas checked, but look at the fuel injectors. Could have one bad or going bad. But first I need more info. :)

no i havent drove it it bogges out if i give it gas after the 1/2 hr

i ran it for 30 min and it started acting up then i shut it down and un hooked the bat for 5 min and restarted it it ran fin i drove it and got it up to 90 miles/hr but after 20 min it bogged out and died once it sounded like a vw bug all the way home i think it is the computer but not sure

Weird. I was going to say upstream O2 or injector, but it's not showing symtoms I am thinking would go with that stuff. :eek7:

i have unhooked the o2 sensor with no change i have bought a cpu on e-bay for 20.00 i will try that

sounds like fuel pump

whould a fuel pump do that after 30 min becuse before that i can drive it at anyspeed i had it upto 90 the other day

The fuel pump will do that,especially if it takes 1/2 hour to do it. You
should have a fuel pump gauge installed and drive for the half hour and
see if fuel pressure drops,......good luck

ok will try that