idle problem.

[Ashyie_Ferio]

hey all. i need help troubleshooting.
my iacv is faulty i think. when turn on the aircon, rpm is too low. around 500rpm.
tried servicing it myself but i dont have enough power or know how.
a fella suggested is add an ficd. thoughts?


oh. i drive a honda eg8. d15b. stock.

 

[huakenny]

please clean the throttle body first. it should be oily/carbon dust

 

[Ashyie_Ferio]

already cleaned before this. r u sure its the throttle body? my formen said its the iacv.

 

[huakenny]

there must be something is still dirty or how i not sure

witohut thinking so much wit headache, adding additional ficd from toyota is easy n headacheless job as it can straight away adjust the rpm from there without fixing anything of the car

 

[Ashyie_Ferio]

thanks. i'll try my best the clean evry part first. if that doesnt solve the problem, then ask my formen to fix. thanks kenny.
:cheers:

 

[clockwork]

mine the other way round when air con kick in RPM go higher can reach 1400rpm.....friend say maybe is the airflow sensor.......

 

[^pomen_GTR^]

mine the other way round when air con kick in RPM go higher can reach 1400rpm.....friend say maybe is the airflow sensor.......

me too got problem rpm jumping up to 1300rpm during idle after A/C cut-off....a/c cut-in drop back to +-700rpm...


the problem intermittenly happen...if it does happen,even turns off my a/c give no effect to cure it...

i've checked all vaccum hose related to TB/regulator etc etc...not yet check other things....MAF sensor connector,TPS connector checked and in good condition.....

Throttle body was just over 1year old brand new....if really TB kong again me....

 

[DanzEterna]

try installing FICD 1st.

 

[guest]

more or less happend to my car....after rempit2 with my evo3 engine...sudenlly rpm going crazy...bouncing up and down....but if ride as normal... rpm ok je....y ah?sometime when rempit secara lembut2 the rpm from 1k rise to 1.9k....y ah?haiya......

 

[Ashyie_Ferio]

i heard honda cars mmg cause headaches. parts cant be dirty, cant be too clean also. hahaha.

 

[clockwork]

i try to clean the AFS n air filter tonight n see how the results.....

 

[Ashyie_Ferio]

guys, i went to an aurcon shop n he said that my idle low when on air con beacuse too much pressure in radiator or sumthing like that.. so either can replace the whole assembly for rm200, or add another fan for 150.. my headache is, which is the problem now? is it my iacv or the radiator? grrrr.

 

[clockwork]

1st time come across such things bro......

 

[arrowhead]

based on my experience with honda, if idle goes funky when air con is on/off, its more of less the iacv. urs is probably faulty. cycle is either too fast (high idle) or slow (low idle). i've had my fair share of iacv troubleshooting.

u should try to swap with a friend with similar engine, and see if it works. if it does, change the iacv, should be too exp. 100-150 bucks used. if its not iacv, possibly ur TB and the screw that comes with it.

 

[DanzEterna]

im not sure whether is it the iacv, but im definately sure that is got nothing to do with the radiator.