I have a 86 2.8l fiero that will not idle when cold
When i start the car it will run for about 2 seconds and then die i have to keep hitting the gas for about 5 min then it will finally idle on its own. But when it does finally idle it hesitates when you hit the gas to go and it gets really annoying because it jerks around, its a manual so it does it every time you shift.
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an alternator won't stall your car, the battery provides power to keep the spark going. It sounds like you could have some bad fuel, if you're able to run the throttle manually with your foot and keep it going that would indicate idle control. but if it stalls still when you are giving it gas. I would guess a fuel supply issue, either water in your gas, or fuel pump. Good Luck.
disconecting batt resets the computer. now it needs to learn how to set everything to run again. disconnect batt for atleast 60 seconds, re atach, start car it will start and die(dont press gas) do this over and over until it idles (could take up to 10 times). by pressing the gas you make the computer think it is idling to high so it keeps turning down the idle. it will idle fine after reseting computer and starting several times without hitting gas peddle.
Check the EGR tube that bolts to the bottom of the upper intake (close to the throttle body) to the EGR Valve for cracks. Also check for Vacuum leaks. Also have the cold start system check for problems. The COLD START INJECTOR SWITCH might be bad.(The cold start injector switch activates the cold start injector on all V-6 Fieros. This switch turns on the cold start injector on initial start up to get the engine to start quicker and run smoother when it is cold.)