help i am running rich!!!!!

[big o car 4.6]

My car is stuttering in low RPMs and my air to fuel ratio is showing that I am running rich off the chart. I tried pulling the MAF and putting and a deferent one on a deferent one and still does it........
Thanks

 

[DBMSTNG]

have you done anything to make it run rich? like bigger fuel injectors or something?

 

[el_kid_1]

What kind of CAI Kit do you have? If you have a 90 deg bend in front of the MAF, it may cause bad readings that may cause your engine run rich or lean.

 

[big o car 4.6]

I have the stock intake with stock injectors on it right now......

 

[Roush21]

Sounds like you need a dyno tune to me....Get it on a dyno and let someone burn you a chip and pull some of the fuel out thats my guess..???

 

[Trick98GT]

Is your check engine light on?

Check all O2 sensors and make sure they're plugged into the harnesses with no damage to the wires.
Also make sure they're screwed into the pipe nice and tight. If not, the pre-cat 02s may suck fresh air and dump in more fuel.

I had the same prob until I realized that I forgot to plug in my precat sensors

 

[BVille99GT]

Did you took off the screen that goes infront of the MAF when you installed the CAI

 

[big o car 4.6]

I have the stock intake with the MAF screen poked out. But would that really do anything?

 

[2002BLGT]

put the screen back in , see if that helps , it should .

 

[big o car 4.6]

I cant put the screen back in I de-screened it. There is no screen left.

 

[2002BLGT]

I cant put the screen back in I de-screened it. There is no screen left.

get one from a junkyard

 

[big o car 4.6]

but why would not haveing a screen on my stock maf cause me to run rich? I did not have one on my CAI and it never did this to me.

 

[2002BLGT]

it affects the air flow , the screen makes the air less turbulent .

 

[Dan_Soprano]

My car is stuttering in low RPMs and my air to fuel ratio is showing that I am running rich off the chart. I tried pulling the MAF and putting and a deferent one on a deferent one and still does it........
Thanks

I see in your sig. that you have an inline fuel pump..........maybe too much fuel?

 

[big o car 4.6]

the inline fuel pump is on a switch