While im driving I noticed today that while driving when I started it up it feels like my engine is running on a 5cyl. or something because its running very rough. When I hit the gas it rumbles very loud. yes i know I ripped out all the carpet but it never made that same rumbling sound before though, while im ideling at the red light my RPM's are running on 200 or 300 RPM's... my oil is low but my odomener is like 2000 miles.... my gas is alittle under a half tank. Some one help please.

 

The first thing I would do is a compression check,make sure it is not mechanical. if you are sure it is a miss then pull injector connections until you find the cylinder it is,and chec k the plug and wire

 

i checked those and they were fine...

 

Then check fuel pressure,plugs,wires,injectors,dist cap and rotor,I have found as long as it is good mechanicaly,it is easy to fix. Do you recall what the pressures were on compression?

 

you may also want to clean the iac that might be you rlow idle problem and when was the last tim you replaced your fuel filter may be partially clogged

 

i replaced it about a month ago and im still around 2000 miles. im gonna be replacing it soon. whats the iac? but also my dad also said my o-rings could be going bad