b16a giving me idle problems! iacv is good fitv is good block throttle body with palm car wants to die but doesnt no overheat no coolant loss have driving car for hours no over heat an ifle for a while no over heat no milky coler on oil cap ,dip stick ,coolant resivior ,or rad cap compression test 189,180,189,180 !! ive relearned idle unpluged iacv adjusted unplug fuse blah blah also i let foot off gas idle drops bounces up an then stays down comin to a completestop idle willnsit perfect an a min then slowly start surging very little then more igntion timing an timing is spot on car when left sitting in heat on hot days 70 plus will start rpm wil go a lil up almost die then smooth itself out car runs great besides this issue any help will b appreciated thankz in advance !!!!

 

Check for vacuum leaks. What happens when you put your finger over each hole in the throttle body for the IACV and FITV, one at a time?

 

ok i went out plugged both an noticed the car did die when doin so but not when blocking the whole throttle body an thanx for the reply

 

ok so one at a time does nothing to change the surge fitv also not sucking when warm an no check engine lights

 

If you think about how they function, there really shouldn't be much of a suction when warm so that's ok. But if there was no change when you plugged each one, one at a time I would search for some leak. When did this start up?

 

this all started 3 months ago but has escalated alot since doin what i read on forums but i wna add im on the car rite now an just relized the car almost stalling when spraying brake cleaner on bottom of intake manifold nxt to gasket is this a sure sign of the gasket bad or ?? an is this usaly something that just happens with time ??sry if thats a stupied ? i have read suttin bout this but not sure

 

Can you take a video or a picture of where exactly you sprayed brake cleaner? The manifold gasket or the throttle body gasket? Were there bubbles or noises coming from the area?

 

i spray exactly at the bottom where the intake manifold meets the head right i will take the video as soon i get the chance just wna hold of i was just doing it for a lil so the vid will be up soon but right where the bottom intake manifold bolt is that corner intake mani gakset yu spray it an the idle drops almost about to stall prob could if i sprayed enough

 

surging idle. check the tps and make sure it is facing the right direction.

 

If you have any vacuum ports that you are no longer using (if a line was removed to add a catch can or something of that nature) make sure they are plugged off correctly as well. I had a similar issue with surging idle. I pulled my pcv system and the port that the hose hooked to on the manifold from the pcv valve, while i had a rubber vacuum cap on it, wasnt sealing completely. A ziptie to tighten it up proved to cure the problem, so i removed the hose barb fitting and installed a pipe plug. (Performer x manifold) idle issue is now non existent.

 

Also check valve lash. Although it sounds like a vacuum leak to me.

 

thank you all for the reply sorry i havent gotten back welll heres were im at so far so i took timing belt off realigned timing marks to tdc on the nose then set ignition timing to 16* start car an idle surge has slowed down alot now i also fixed vacumm leak from vaccum hose witch also helped i blocked throttle body car died ao i kno theres no more vacumm leak tryed setting base idle with all proper procedures an it makes it worst i have to almost close the idle screw to get it to stop an idle normal but heres the thing while driving i let go of gas idle dropes then goes up ever so slightly an goes back to normal while at a stop but there is still a minor idle surge alot better than b4 the other thing is if i block iacv the car stalls dnt kno wat that means but the only thing i have yet to do is the valve lash so im hoping this will finally b the cure another thing i forgot to mention anytime i put hids von or rad fan

 

thank you all for the reply sorry i havent gotten back welll heres were im at so far so i took timing belt off realigned timing marks to tdc on the nose then set ignition timing to 16* start car an idle surge has slowed down alot now i also fixed vacumm leak from vaccum hose witch also helped i blocked throttle body car died ao i kno theres no more vacumm leak tryed setting base idle with all proper procedures an it makes it worst i have to almost close the idle screw to get it to stop an idle normal but heres the thing while driving i let go of gas idle dropes then goes up ever so slightly an goes back to normal while at a stop but there is still a minor idle surge alot better than b4 the other thing is if i block iacv the car stalls dnt kno wat that means but the only thing i have yet to do is the valve lash so im hoping this will finally b the cure another thing i forgot to mention anytime i put headlights on or rad fan on the idle jumps up goes back down to very little surge now when i put the hids on the idle surges bad so this is where im at besides that no cels car starts an runs excellent besides being stoped i relize the very annoying minor surge witch i can live with since its alot better than b4 thank yu for your guys time seriously appreciate it

 

forgot to add witch way ahould the tps b facing an i do kno how to do the test so that is also on my list to do ?? could b that as well

 

also relized fitv is suckin very little but enough to suck my finger i scrwed the plunger all the way in an still sucks very very little

 

also car does not over heat nor loose coolent an has definitely been bleed correctly !

 

No sure if anybody mentioned it, but did you check you pcv?

 

i have replaced pcv valve with oem spec 1 brand new now another thing i closed the fitv all the way now car sputters a little at idle is that because its closed to much an it still is sucking some air threw throttle body when warm by the way this is a jdm b16a 95 model just so yous kno i have tryed everything to my knowledge an still no success

 

Next thing to do is check valve lash. Make sure the engine is all the way cold (let it sit overnight).

 

ok so im just waitimg on the tool to come in i have feeler gauges an all how to specs so i will b back to yous soon the adjustment is alset