When warmed up while driving it stalls for a second then takes off again

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Our car starts and runs but quits at odd times. We hae changed the computer and o2 sensor. Now the O2 sensor is burning out repeatedly and they have no idea why it keeps burning out. This is the 3rd or 4th O2 sensor in 2 months. How they figured it out was a computer flickered with the error message and now comes up with the message. There is a weak signal coming from the sensor and that is what is causing the car to run normal and then cut off randomly. They have asked us to buy a O2 sensor from a GM dealership only if the sensor is of a different brand. I looked and the sensor they are using is the exact same as what GM sells. Which is a Bosch which is the best brand

Hi
What was code in P0xxx format? Has fuel pressure been checked? Recent tune?Does it die hot, cold, at speed, idling? Does it die like key turned off?
Let me know
Thnaks for donate
It was tuned about two years ago. (All spark plugs replaced, all filters, all injectors were cleaned, and a few other things). It dies cold, hot, and at idle. It just depends one the situation. We have had it die going down the road at 70 miles an hour and then die when trying to put it into drive. Also if it was a fuel issue, tell if I am wrong, it would sputter to a stop but the car normally just shuts off not really sputters.
Mechanic won't give me the code!

The code is P0102 MAG
Constantly scan tool shows MAF readings sticking and 1.34 sec or 1.64 gls or 2.07gls. Lan watch scope gives good back probe readings on MAF that computer is not reading. Sometimes the computer has good readings, sometimes not, w/o touching or moving anything.
This guy has replaced 3 computers and as many o2 sensors. Also replaced the battery. The car is running now but weare still afraid it will go back to it's old ways.
It's my nephews car so taking me a long time to get the info.
Not sure if this is making the connection to the oldstring, if not let me know at randy_guttery@hotmail. Com
Thanks!

1999 Pontiac Grand Prix 6 cyl 86000 miles

ok I replaced the mass air flow sensor, now my car is doing the same thing I had the computer cleared and reset and still having the same problem and the problem is that my rpm's go up to 4,000 and drop almost all the way down below 1,000 and sputter and die and it also does it while driving around corners or stopsigns lights, or even costing down hill it will just die. But the code that was read after replacing mass air flow sensor is that lean bank 1 and that has to deal with my full injetor but would this cause the problem or any thing with fuel pump or fuel filter.

Checked everything you recommended and all OK. The car ran right for awhile after replacing the computer and o2 sensor for the third time. However last week the "check engine" light came on again. The code that came up this time was for the catalytic converter. When we brought it in originally they thought maybe it was just a miss reading or some how fuel or something set of the sensor. So they just reset the computer and told us to wait 100 miles and see if the check engine soon light came on. Well it came back on this past Friday so we are taking it in to check the code and see what it says and if it is the converter again we are going to replace it. But I want your advice one thing. What normally happens when a catalytic converter goes out? Could this be the cause of all my original problems?
Thanks!

Car continually stalls. Cannot keep running after more than 4 seconds. Fuel tank 1/2 full, fuel pump runs at key on engine off for few seconds and fuel pressure is 55 psi. However, pressure gradually drops to 0 with engine on resulting in a stall. Replaced relays - no change. ODB computer shows nothing, no trouble lights or check engine warning.

I have the same problem, and you want here something weird, I took the fuel pump out and looked at it and put it back in and the car ran fine for A DAY! But I also did a fuel relay test and the car still wouldn't start all the time, but I was going to replace the fuel filter but that couldn't stop the car from running, I couldn't be that dirty, so finaly I got mad at it and hit the fuel pump with a hammer, "a lot" haven't had a problem since then. BUT THIS IS JUST A SUGGESTION! But I didn't not like beat the crap out of it I just tapped it when it came on, "helps if you have a friend there to put the car on run mode" but I've been told that some fuel pumps are stored for years in a warehouse and when you leave anything sit around for a while stuff tend to freeze up or fall apart. But I hope this will be somewhat helpful to you

I have a Pontiac grand Prix GTP. It out of no where started stalling and I have to wait a few hours for it to restart. After I get it running again i'm lucky if I can make it a half mile and dies again. Changed the fuel filter still the same problem. Fuel pump seems to be working fine. I don't have a lot of money but need to diagnose this problem. Any help would be appreciated.

No check engine light. Fuel pressure is good! Plugs and wires are a little less then a year old. The only repair that I did was after it first died and I had to wait for it to turn over again and that was the fuel filter.

I pulled plug wire and held it next to the block and got blue and yellow spark. I also used carb cleaner and starting fluid while it was in non turn over mode and that didn't help either. Its just really weird how it starts up fine after sitting and will die after around 3 blocks(i tried driving it again). It will some times turn over for a few seconds and then sputter out but it usually cranks fine but wont turn over.