All of a sudden today I noticed that my car was running really lean. It would stay stoich what I hit the gas hard and stay stoich when I was idling. But when I let go of the gas it crashed to lean and while I was drive at a steady pass in 3rd gear. I have no vaccum leaks. I was playing with the idle air screw on the top of the throttle body because the car was idling funny, but that's it. Also I tried resting the ecu and the check engine light came on right away. I have a brand new honda O2 sensor so I don't think its that. Does anyone have any input?

 

What is your code

It's normal that a honda engine run funny on the idle. I check with my SMC and it run perfect when i run rich in idle. And when i go to stoich , it's a little bit rough. It was before.

Give us more info?? What is your fuel management??

 

I'm using a vortech fmu and 255lph fuel pump as my fuel management. The funny thing is... the car is running fine, actually it's idling better. I think it might be because it snowed here and some snow got the connection on the O2 sensor wet where I taped into for the a/f gauge. But I'm not sure.

 

ok,

if you still have the problem, check with your hose from the turbo to the FMU.

 

If you let off the gas and it goes mad lean, that is normal.. but if you are under a load and your foot is all the way in it, and still running lean you have a problem. This is nothing caused by your idle air screw. You are just simply not getting enough fuel to the engine.

Jeff

 

I am soon to be boosting my D16Y8 and dont have any type of fuel management yet. Will a FMU and a intank fuel pump do for around 5 psi on a T3 intercooled?

 

im boosting my d16y7.. I'd even throw a fpr in there. Should be iite.

 

Figured out what the problem was. The piece of ---- used missing link I bought was broken and blew the map sensor in half. I got an new one and just used some check valves and it seems to be running smooth.

 

It broke? take some pics.. I would like to see that

 

It blew the map in half???? :o

Man I have never seen that ----.