my ford pu starts and runs just fine but dies after a few minutes have to hold accellerater down half way to start stays running at 2500 to 3000 rpm then you can bring it back to idle idles for a few minutes then shuts off iget a little back firing trying to get it started again but will start with the gas pedal depressed the truck sat for alittle bit then wouldnt start just rummble a little bit and die iwas checking into a new distributor to find out there were two different types i pulled the cap just to find it was really dirty inside put it back on and it started up just fine so i replaced the cap and rotor i went five miles down the road and stopped at someones house it idled about a minute then died got it started but it was running ruff backfiring the exaust turned red hot stated spitting out pieces of a new catylitic converter so i shut it off it started back up later for the car trailer and ran fine again but died when trying to unload it ive had that problem with a tempo beore it was the o2 sensor but another time it was its egr
Country: United StatesMake: FordModel: f 250 4x4Year: 1990
Hello!Did you still need help?Does the engine currently start and run but just stall out at times or does the engine now just crank over and not start?What size engine do you have?
ok its 5.8 liter v-8 it currently runs and stalls out at times
with the exaust pipe glowing lol
Hello!Sorry for the delay!I would check the fuel pressure regulator. It is located on the fuel rail. It is round, about a quarter size and has a vacuum line going to it. If the regulator is leaking gas than it can cause this problem. Pull off the vacuum line that goes to the regulator. Be absolutely sure there is no gas in the vacuum line. If there is, the diaphragm has ruptured and there is gas entering the engine that is not accounted for and the regulator will need to be replaced! If that checks out ok, then you might have an air or a vacuum leak. This is very common. Pop the hood and listen for a hissing sound at idle indicating a vacuum leak. Another possible cause would be the mass air flow sensor or cracked intake air snorkel. Anyway that air can enter the engine after the mass air flow sensor can cause this condition you are describing.Last but not least, the idle air control motor. If all checks out ok, then I would go after the idle air control motor for your stalling condition.
diafram checks there are no vacum leaks or it would no idle so well yhis vehicle is not equiped with a mass air flow sensor and how would the iac motor do this
Not opening up enough preventing enough air flow into the engine.
ASE MASTER TECHNICIAN ADVANCED LEVEL SPECIALIST