|
try doing an idle relearn procedure on it. dont use the stupid throttle body screw like everyone always says. that only messes with iacv duty cycle.
now i know it may sound like b.s. but it isnt. if you have ever seen the term "driving cycle" used in the helms im about to tell you what it really means.
its absolutly insane actually. the "driving cycle" consists of an immense amount of data that the car accumulates through fuel trims, iacv duty cycle load variables etc. if you printed it all out on standard paper you would have enough to laminate a 6' x6' floor. i cant really go into detail about what all the data is because most of it appears to be jibberish to the common eye. but i somehow doubt the ecu would collect a bunch of b.s. for nothing. so a driving cycle isnt just 45 minutes or a half hour of driving or whatever.
if you do not do the idle relearn your driving cycle gets messed up from misc loads, trims etc. the computer basically doesnt know how to idle the car very well. i had stalling problems with my stage 2 crowers unrelated to my tight valve situation. i woudl reset the ecu and just start driving and the idle quality would degrade rapidly. when i finally took the time to do the relearn it has idled perfectly since. also, at the dealership they have to do this to every new car that comes in.
for anyone who wants to know how to do it, its very easy.
1 car off unplug the iacv
2 start the car,(it will get a cel for iacv, ignore it) it may die but keep restarting and eventually get it to idle.
3 it will idle low and rough but you need to check what the rpm is. with the throttle body screw adjust it so the idle is between 5-600rpm.
4turn off the car
5 pull the radio fuse to clear the iacv code you just had from having the sensor unplugged
now the idle is within spec of the iacv's ability to adjust it. by adjusting the base idle with the iacv disconnected your getting it into its range of operation so you dont max out its duty cycle.
now that the code is clear
6 turn on the car with absolutly no load, no ac, no lights no nothing
7 let it idle for at least a minute no more then a minute and a half
8 now turn on the headlights and let it idle for 1 minute
9 now turn off the headlights and turn on the a/c and let it idle for a minute
10 your done
if you think im joking go ask a tech at honda.
|