When the car warms up it runs like crap

[rsagen]

Ok first of all, before you complain or before the admins delete this topic , this is NOT A 240SX or not even a Nissan. My father has a 2003 chev impala and the only reason why I am posting this is to get some insight and advice.

When the car warms up it loses power and runs like it is not running on all 6 pistons. Is there any body that has had a similar problem with their nissan? Any advice would help.

[liquid_cool]

#1.) its a chevey..amde by bailout taking , union thugs!..lol..with that said..i need more info..

how is the idle after warm up?..have you tryed adjusting the idle?..have you ever replaced the O2 sensor's?...were there any events..like overheating/low oil?...

get back to us when ya have more to go on.

[rsagen]

when the car is cold it runs good. so this leaves me to beleive it is not the idle. we replaced the o2 sensers also. temps and pressures are ok. and it also passed a compression test.

[SkinnyKibbles]

Don't impalas have a feature that allows them to run on fewer cylinders until you stomp on the gas or go high way speeds with means of saving gas?

[rsagen]

thats on the newer models i believe. this is older. it doesnt even have on star...

[rsagen]

well anyways its fixed now thanks for the help. the scanner said it was O2 sensers but actually it was the coil pack