91 Buick 3.3 Starts and runs normal cold, but dies warm.

Well I do have a couple of videos.

Here is the first one as it was warming up, and you can hear how it just flat out stalls when revved. The knocking is the idler pulley going bad. Also It idles low, so you had to very gingerly let up on the throttle or else it would idle to low and stall. No amount of flooring/pumping will get it to idle back.

Dont know how the starter did not over heat.

Here is a youtube video of what its doing. Much better then me trying to type it out.

http://www.youtube.com/watch?v=XHDEiZVlwSA

Thanks.

So today I was again checking my spark, and it seems as I have a weak coil pack. 2 of the coil packs have a nice blue strong spark that will arc over 1 1/2 inches, the 3rd coil pack will will no spark unless you are less then a 1/4 inch away from ground. Also with a spark plug disconnected on this coil, I feel NO difference. Same misfire, stumbling, no power. If I disconnect both spark plugs off this coil pack, I can then hear popping in the intake. So im off to buy 3 new coil packs. Wish mE LUCK. :Us:

Well, I replaced 3 coils, and she ran GREAT, no missing, great power, all of the above. About 15-20 mins pass im driving going back home, and give it a couple WOT runs, and she dies both times, again right at the peak of the wot run like I turned the key off. But it starts up, and is alright if I do not give more then 75% throttle I would say. About this time I hear the fuel pumping making all kinds of noise, from a very loud hum that you can hear 15 feet away to a weak sounding electric motor. I get back in my driveway and she sputters and then dies like I ran out of gas and will NOT start. I pull out the starting fluid and she fires right up for about 2 secs. Just for the hell of it, I check for spark, and have 6 NICE blue strong spark that will spark better then 2 inches. Let the car sit for 45 mins, and she starts and purrs nice, but slowly hear the loud hum returning with in a couple of mins. So tomorrow im going to drop the tank, and replace the fuel pump and strainer. I just replaced the fuel filter 15 miles ago. So hope this will solve all problems. Also should note, I cut open the old filter, and it had very fine metal glitter in it. Very fine, smaller then pepper flakes.

Hey now. New fuel pump and strainer installed, and she runs great. Had to drop the tank, and boy I dont want to do it again anytime soon. So I had 2 issues. The bad coil packs for the misfire, and a weak fuel pump for the stalling, and not starting unless cooled off. Happy shes running again. Already put 80+ miles on it. :Us: thanks again for the ideas.