well if the lights on then get the code. That should tell you what you need to know. Head over to autozone or something and they can run the code for you

 

i know one of the codes is air/fuel i just don't know how to find it

 

did you write down the code #?

 

well right now i had one that said P1400 i don't know what it is, any help would be great

 

it says Manifold Differential Pressure Sensor Circuit Malfunction

 

I had that error code, but it did not affect the car idle or driveability. It gave that error code because i had the Map sensor removed since i had no place to connect it to at the time. 1 gen intake doesn't have a stock spot for it. I was reading else where and apparently its job isnt all to important. If your MAS fails on you, your car goes into limp mode and rely on the Map sensor and its other purpose is to monitor the EGR system. Now since i have the MAP sensor hooked up it notice my EGR is not workin properly and so gives me that error code. Another aspect i dont care about. Well dont quote me its something i read elsewhere.