Almost loses all power

[RaspMetalicMX3SE]

I noticed in fall that when i would rev my car in nuetral after the tach climbing it drops to almost zero and it feels like the car could almost stall. I had just replaced my alternator at the time consequently the bad alternator completely killed my fairly new battery. So i figured that the problem was the new generator was having trouble keeping charge on a shot battery. i didn't get a new battery til today because i knew i wouldn't be driving it in the winter. So i bought the battery and installed it, turns out the problem is still there. Any advice on what it can be?!?

[93MX3KLZE-T]

Check to make sure you don't have any vac leaks.

[SmoothMX3]

Wow, It's weird hearing this. I had this problem on my zx2 and i could never figure out what was wrong. I would be driving down the road and down shift, then when coming to a complete stop, press in the clutch and the needle goes to zero. It then cuts off. Everytime, i would have to try to give it alittle gas everytime it started to drop, just to keep it running. I never figured what the problem was. good luck.

[smallblockman69]

when is the last time you replaced your fuel filter?

[RaspMetalicMX3SE]

Last time the fuel filter was changed was about 40,000 miles ago

[smallblockman69]

it might be clogged or the fuel pump could be going bad. anyway the filter is cheap and it is about time to change it anyway