Ran my teg through a computer and it gave me back a code of my fuel mixture too lean according to my o2 sensor. So i replaced the sensor and my fuel mix is still too lean. My engine isnt getting enough gas, and im not getting enuff speed. Also, when I brake fast my car shuts off. Could it be a problem with vaccuum hoses, fuel pump, fuel filter? I ordered new cold air intake, so maybe that can help out. But I dont wanna install it and my car run like crap. I need suggestions. Thanks H-T'ers

 

What have you done to it?

If your car is giving you problems like this and it's stock, adding aftermarket parts would be the last thing I would do right now.

 

Is the ECU throing any codes? As in the check engine light on the dash being on.

 

fuel mix is lean, I bought the car used and I dunno what kinda maint. has been done to it. I'm changing the fuel filter this weekend, plus i wanna change my vacuum hoses

 

Maybe check the fuel pressure? I would think that low presure would cause you to run lean.

 

thats probably the smartest comment ive heard since ive posted this thread. You think fuel pressure will affect my car when im sitting under half a tank, i hit the breaks hard and my car shuts off???

 

Stock fuel regulator? If so then check the all your vacuum hoses.

 

where can i get a fuel regulator and how much is it gonna cost me???