My pontiac firebird turns on fine but after a 5-10 min drive it idles low then turns off then i turn it back on and it idles fine for like 5 seconds then turns off again i even press on the gas but it doesnt work either i tried putting gas in it cuz i thought it had no gas then while fillin it up it spits it out like if my gas doesnt get into my tank, wat can be wrong

SOURCE: The turn signals on my

You have two separate flasher devices on your car. One operates the flashers, and the other, usually located near the fuse area, operates the turn signals. A trip to your local Autozone or Advance Auto Parts, or for that matter most reputable parts house will give the exact location of turnsignal flasher, and they can supply a new one.

SOURCE: pontiac firebird 2001, my turn signals don't work.

the problem most likely exist in the signal lever. Check and trace your wiring from lever to flasher

SOURCE: can't get gas to go in tank, and it will spit out gas

Every gas tank has a vent tube, so when you fill the tank, air can escape, while the fuel is being pumped into the tank. Some vent tubes are metal, some rubber. Yours is either collapsed or plugged up. Look at the fill tube in the firebird and follow it from the gas cap to the tank, there should be a 2nd smaller tube that is your vent tube. Check to see if it's collapsed, pinched, or bent. This is definitely your problem. Check out this web site for pictures of different fill and vent tubes to get an idea of what to look for. Good luck let me know how you make out. Curt
http://www.carparts.com/REPLACEMENT-GAS-TANK-FILLER-NECK/GP_2005706_N__10618.car

SOURCE: pontiac sunfire turns over wont start

I am having the exact same problem with my 97 sunfire! LOL Help! I heard it might be the coil pack or the fuel pump? I hope not the fuel pump. It got towed today...

SOURCE: engine codes p1518, p0125, and p0420 for 2001 firebird

P0125 sets when engine coolant temp does not reach temperature for closed loop operation within a set amount of time.
May be a faulty sensor or thermostat.
P0420 Is related to a faulty rear 02sensor.
P1518 PCM & TAC module communication detected missing or invalid serial data.
If TAC related repair has been done, clear DTC & recheck system. It may be necessary to preform clear codes function twice to clear this DTC.
make sure starting system & charging system are functioning properly. Low voltage can cause this DTC to set. This should help. Let me know how its going.