Ive posted on same matter but trying to be more detailed to the problem.It will start but revs up to about 2500 rpms ,then it whats to like die it holds a rough idle.I give it gas an it will rev fine.I have a popping noise in the exhaust(oem).The afm is working fine and tested the throttle sensor as well.It blows white smoke and the converter gets red hot sometimes only due to this problem of the car running rough.The car had no problems and it had sat up for a year befor i had gotten the car.This problem happend twice to me but this time it wont go away.Is it possible that im not getting enough gas or a plug wire,spark plug thank you!!!

 

Are you sure the cat's not clogged?

 

What I was thinking, *shrug*

 

That was the same thing I was thinking my self but it ony does it when the engine is idleing real low

 

i have sort of the same problem but gutted cats

rough idle really close to stalling

and it puffs smoke when its cold

also it gives a put put noise from the exhaust

 

change plugs and wires.... ATF or MMO treatment made my N/A's similar problems go away

 

Do a compression check when you change your plugs. Symptoms are sounding like the beginning of an apex seal failure!!!!

 

if you have an aftermarket boost gauge check the vacume that shows if you have a healthy engine or not.

if you have a good vac. reading then you have a healthy engine. thats like 20 range.

yea plugs
possibly fuel filter
(i donno why it would be the fuel filter but mine seemed to idel better when i replaced mine when i first got the car)

 

Thanks guys, will try all with my fingers crossed!!

 

if your idle's rough, check your bac valve's resistance per the manual, it should have something like 10-12 ohms (don't quote me on that, just going off of memory). mine was at 13.x and my idle would bounce and even die sometimes when i hit the brakes or turned on the headlights.

if your cats are glowing red, they're prob toast.

good luck,
john