i have a problm with running rich at idle. i usually get 330 miles to a full tank of gas with my b16. but i runs really rich at idle. like 12.5 to 1 air/fuel. i hooked it up to a machine at college.im going to go tomarow and test my 02 senor and others also and change plugs to see if that helps. any help i would love thanks.

 

are you getting any codes?

t..

 

no codes at all

 

Are you running a stock ECU program? If not it could just be the program. I have to take out 10% at idle with my Skunkworks Race program......

 

i do have a endyn program but this problem just started about a month ago and ive had the ecu for about a year now

 

I don't think it's a problem. Every program I've run including stock has my car rich at idle. I just subtract fuel via the Vafc. Smoothes out the idle with the Crower cams.

 

but it shouldnt run that rich at idle with it warm should it.

 

Mine certainly does, without I don't remove a bunch of fuel down low.

 

what did the O2 sensor test show?

how is your ECT sensor function?

it should run in closed loop at stoic at idle.

unless your program has no closed loop...

t..

 

ect? i didnt get to test my my o2 senor maybe wensday. pulled plugs shows running rich a little. at idle my a/f meter should cycle back and forth right when it is completly warm. but mine stays about 3 bars in the rich.

 

Engne Coolant Temprature sensor.

it tells teh engine it is warm. (it doenst tell you gauge anything though)

a malfunction of hte ECT will cause the rich situation that you describe.

search for "ECT" in the archives for info, there is HEAPS,

t..