My son's '99 2.0 eclipse keeps stalling on him. runs good for a bit then just dies. battery is good. Alternator and starter are new. help if you can. tnx

check and test ignition switch and neutral safety switch

What's the voltage at the battery with the car running ? Testing an not guessing is the way to do proper diagnostic's ! Battery light staying on , is there B+ voltage at the alternator connection's ? A new alternator won't make a bit of difference if no power to the alternator . Looking at a wiring diagram an testing the electrical circuit ,doing voltage drop testing , plus checking for DTC'S - diagnostic trouble code's . Some vehicle's charging systems are computer controlled . And looking at a wiring diagram i see your vehicles charging system is computer controlled . If you have done so already , take it to the dealer

If the alternator is good and the battery is good then it's you're starter. Just in case check if you can jump start it then unplug the battery and jumper cable's if you're car keep's running then you're alternator is good if it die's as soon as you unplug battery/cables then you're alternator is died.

Ford Windstar Starting/Stalling Problems - Edmunds.com

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Oct 16, 2007 - 31 posts - ‎26 authors
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check alternator if its fried car will die if its good car runs with dead batteries

it sounds like you have blown fuse to the Alternator.. I don't know what car you are talking about but they charging systems vary.. But if alternator isn't getting all the power it needs it won't charge. this should be checked.

good luck

Replace battery .Start car warm to normal, check alternator by removing battery negitave cable, if the engine quits running replace alternator if it keeps running the alternator is fine. As far as the serpentine belt goes it will not prevent the car from starting.However if the belt looks like it needs to be replaced then it might be a good idea to do so.Good Luck.

altenator! nor it circuits.

WHEN EVER YOU REPLACE BATTERY.YOUR PCM WILL LOSE IT MEMORY IT HAS TO RELEARN OR BE REPROGRAM TO IDLE.THATS WHY CAR IS STALLING OUT.

The starter is not the issue as you say the car suddenly died. That would not be caused by a bad starter or solenoid.

You car needs the battery to be charged to continue to run. While normally the alternator or charging light would usually come on, I think it has something to do with your alternaor not keeping the charge up on the battery. Without a strong charge, there would not be enough power to turn the engine over, which would explain the starter issue.

The fact that you said the battery had been charged overnight and there wasn't enough power to turn the starter over bothers me. While someone has told you the battery is good, I would take it somewhere else for a 2nd opinion. I have a feeling that the battery is at the root of the problem.