Rough idle at start up, loss of power, misfires?

Question was 'what else could it be other than a coil pack?' It was the coil pack, but I will check for vacuum leaks just to be pro-active. After changing the coil pack, it runs like new. The O2 sensor is still holding up as well. Turns out that the first one I bought was simply defective. I did reply with the codes, but I don't see that reply here. Thanks for your help.

OK WHAT THE PR0BLEM WITH THE LOSSING POWER & LIKE NOT GETTING NO GAS ARE WILL NOT ACCELERATE AND ACTING LIKE IT WONT TO CUT OFF. I SHUT THE CAR OFF AND START BACK UP IT WILL RUN FINE. WHAT IS THAT PROBLEM
THIS IS A ON GOING PROBLEM

Why does 2001 ford taurus lose power

Driving home last night and all of a sudden ad a loss of power and couldnt go over 20 mph have checked the fuel rail and is ok, and plugs and wires have been checked also

[quote="merlin2021"]Any codes? Is check engine light on or blinking? Check the cataltic converter for rattles, it may have broken up inside, and pieces of it lodged in the exhuast system.
No, no codes no check engine lights at all. But thanks too late I too off the catalitic converters and threw them away that was the main problem with the loss of power. I have always had more problems with those catalitic converters than what they are "sopost to be good for the enviornment" they suck and u dont need them

Car lost power does not go over twenty mph. Back pressure transducer and the EGR vacuum solenoid hoses were popped out of place put them back on started the vehicle and pop out again.

I am working on getting codes.

I have a 2000 Taurus SE with 123,000 miles and only 40 - 50% of the time when I accelerate hard likle to pass or to get on a highway from an on-ramp, the car seams to stall or lose ALL power. At first I thought it was a problem with the transmision not wanting to down shift, but recently I have heard a squealing (it only squeals when this issue occurs) coming from under the hood and my RPMs drop for that 1/2 second power loss. Last summer I replaced all of the spark plugs and tried to clean the MAS. But this problem only came about in the past 6-8 months. My last transmision flush and filter change was 75,000 - 80,000 ago.
Any help would be appreciated.

No, there has not been a check engine light on this for over two years! I am almost wordering if it is not electrical? What gets me is it's so sudden and the total loss of power, it's not like the transmission saggs or the gas pedal feels soft, I litteraly look like a bobble head doll when it does this. And it's not just one loss. It may hickup once be fine for another second that do it twice, then be ok again then for t seconds then it will drop again.

I have a 2000 Ford Taurus w/101000 miles. It has seemed like it was missing for about a month or two. I had a guy test the alternator with a tester that had three lights and was pretty old, he hooked it directly to the alternator and it showed the regulator in the alternator was bad. I took it to another guy who hooked up a newer tester to the battery and it said that everything was fine with the alternator and battery. Another guy tested it by hooking up to the battery and he said he thought it was a driveability issue and there was a problem with a relay somewhere. I dont know if its the relay in the alternator or what the problem might be and I keep getting different answers. When I have the heater or a/c on and it is idling it seems like it is losing power and sometimes it shuts off, but starts right back up. When I put the windows up and down or use the power locks, or turn on the heater when driving the lights dim slightly for a brief second and then it returns to normal.

Thank you for your help. I had it tested at autozone and advance auto and it says the battery and alternator are fine. This morning I turned the heater on and my interior lights are still dimming. Battery terminals were cleaned and tightened. I may have to just have someone hook it up to a computer unless you have anymore suggestions. Do you think it could be a relay? How would I test that?