PLEASE HELP. Sputters at normal temp

ASSISTANCE Stock Engine-Bay Components
1

ok so my car just recently started sputtering out when at normal temp. drove it to work in the morning fine and on my way home started to sputter and then died. Wouldn’t start. Went and got distributor cap rotor and coil. Changed it and it started up fine and drove actually even better. Next morning drove to work no problems. On my way back started to do the sputtering again. Today changed the spark plugs and fuel filter. And did lucas injector cleaner. Drove fine but when it gets up to normal temp i see it start to sputter again.
The only other things i can think of is IACV or O2 sensor bad. I have a AF Ratio gauge connected to the O2 sensor also. Just throwing that out there. But it has been on sometime before this even started.
Could it also be my Catylitic Converter.?

Please Help. I have read so many posts everywhere and no one seems to have any real suggestions.

2

i am kinda thinking it could be the cat though everything is pointing to that. Would that cause it to not start sometimes and when it is cold run fine and then when it heats up get clogged up and start sputtering like that. Right now it has no muffler. i bought it like that. it is just cut after the cat befor it makes the bend to go into the muffler. Would that have any cause for it ?

3

I would look more into ignition related components, if your having a missing/no start issue.

you said youve replaced the plugs cap and rotor. so now its time to ohm out the plug wires, coil and ignitor unit…

4

I’m with BLKACK1. I was going to suggest spark plug wires, ignition coil.