Idles high , starts missing , then dies with check engine light on

use a scan tool and check for any DTC's..

I'd guess: not enough fuel flow. could be a fuel filter, fuel pump, fuel pump relay, fuel pressure regulator. No check engine codes? I would think there should be some that would help diagnose.

Check for vacuum leaks eg. PVC hose power booster and hoses around manifold area.

It can be issue with fuel pressure,its low or the problem relates to faulty spark plugs.
There are few troubleshooting steps to confirm the problem.I suggest you few help links,with complete troubleshooting and solution for these types of issues.

1991 Toyota Trecel: Engine Starts fine but dies when gets Warm? http://whatisbyme.blogspot.in/2012/05/1991-toyota-trecel-engine-starts-fine.html

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1994 Toyota Pickup: Starts fine but dies in few seconds?

http://howtobyme.blogspot.in/2012/05/1994-toyota-pickup-starts-fine-but-dies.html

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1994 Lexus ES300: Engine Idles Rough and Dies? http://whatisbyme.blogspot.in/2012/05/1994-lexus-es300-engine-idles-rough-and.html

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Stalls And Dies At Stop Sign? http://www.howtobyme.blogspot.com/2012/07/stalls-and-dies-at-stop-sign.html

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Car dies when gas pedal is pressed? http://schematicsdiagram.blogspot.com/2011/12/car-dies-when-gas-pedal-is-pressed.html

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These help links will help you to troubleshoot and solve the issue.
Thanks.

Engine stalls or RPM fluctuates at idle up and down or dies near idle.

This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve but always run a OBD2 fault code as well as the cleaning procedure. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control

Do the following

Here are the most common causes of idle surge, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake

You need to change engine coolant temperature sensor/ECT/.Black with 2 or 4 pins depence of a type of the engine.Some of new models use blue one also with 4 pins.

Ford 2004 6.0, Driving down road seams like when it starts warming up it starts Missing or accelerating,jerking,as long as you keep the acceleration it seems to work as soon as you level it out it starts missing,even dies at stoping sometimes...Changed fuel filter, put fuel additive in tank still missing,HELP

check for any vaccum lines that may be unplugged.
then remove the air intake tube and clean the black carbon build up from around the throttle plate.use a clean rag only.i think whats happening is at an idle the plate is all closed but for just a little bit for the idle.carbon closes this off and is causing the engine to die at idle.
clean the carbon out very carfully and using some carb cleaner.

hope this helps
keep me posted

jm

If it's not your fuel filter plugged , or fuel pump malfunction, then it is probably your Mass air flow sensor, or your coil pack etc. You'll have to see if you have spark or fuel first. One of them is missing.