Loosing power question

[thunder]

when i start my car it fires up fine and runs fine for a little while but after about 2-5 minutes of running the thing looses power and starts to run very unevenly and at times even stalls out. I have no idea whats going on. Any help would be appreciated

[Knipps]

Sounds like the opti

[thunder]

its an LQ4. i dont think they have opti

[Green_Phoenix_LT1]

Clogged cat maybe?

[thunder]

Clogged cat maybe?

no cat

[//<86TA>\\]

vapor lock! or a fuel pump thats crapping out

[Green_Phoenix_LT1]

Clogged fuel filter or fault in the injectors? Possible ignition wire/plug issue?

Im no mechanic by any means im just thinking of things that have gone wrong for me over the years with similar symptoms.

[BonzoHansen]

vapor lock! or a fuel pump thats crapping out

this. what modifications have you made, did you re-route any fuel lines or anything near fuel lines (exhaust, remove heat shields, etc)?

[JerzLT1]

Sounds like the opti

it actually sounds nothing like the symptoms of an opti... lol. sounds like an O2 sensor. what car are we talking about here?

[thunder]

its not the filter cause i just put a new one in lastweek. The car were talking about is the car i bought from Gonzo(member). Its a 95 Formula with an LQ4 swap. Mild cam,full exhaust, no cats.

[JerzLT1]

i would say that its your O2 sensors (or even just one) i had a similar problem. check if it runs fine at WOT and check all of your connections

[thunder]

i would say that its your O2 sensors (or even just one) i had a similar problem. check if it runs fine at WOT and check all of your connections

It runs fine WOT when i have just started it. But after a while it runs bad at WOT