Running lean Help!!!!!!!
 

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?

Re:Running lean Help!!!!!!!
 

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??

Re:Running lean Help!!!!!!!
 

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.

Re:Running lean Help!!!!!!!
 

ok,

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

Re:Running lean Help!!!!!!!
 

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

Re:Running lean Help!!!!!!!
 

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?

Re:Running lean Help!!!!!!!
 

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

Re:Running lean Help!!!!!!!
 

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.

Re:Running lean Help!!!!!!!
 

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

Re:Running lean Help!!!!!!!
 

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

Man I have never seen that ----.