akteamster

i got a 96 ek stock motor with about 120k...from a cold start my car idles at around 2000 rpm then jumps down and back randomly untill warmed up....what could the problem be?>

jlacoy82

FITV = fast idle thermal valve? I think. Makes your car idle high to speed up warming a cold motor. This is normal.

If its some new problem that just started out of the blue, you have a vacuum leak somewhere.

tealbubble

hey its your idle air thermo valve... search on how to fix it mine does the same thing i didnt fix it yet but i know what it is... its on your throttle body and im pretty sure its on the back and there is something you have to adjust...

EK k kay

I don't think ek's have FITV's. Try taking off your IACV and cleaning it.

tealbubble

nah its what he said .... fast idle thermo valve...
i just forgot what it was called.

tealbubble

not a vaccum leak if it goes away when the engine warms up ... hint thermal...
for a fitv you will not throw a code.. for an iacv you will throw a code...

is your cel on??

jlacoy82

Its not broken (at least I think not), my 98 EK does the same thing........idles @ 2k on a cold start and then slowly drops down to the usual 800-1k once the temp has come up. Its what its supposed to do. How are you going to fix it? Disconnect it?

tealbubble

search for fitv.. how to... fix it...
i think most ek ex's end up doing it.. its just a screw that needs to be adjusted on the i/m.... and he is talking about a fluctuation not a held idle like a constant up and down until car warms up.. if yours just sits at 2000 till it warms up that could be normal...

civiccpedx

do a search for the iacv, that is prolly your problem. I know mine does that and when i jump the ecu harness it flashes the bad IACV code. Pull it out and clean it with some carb cleaner very well and that should solve the problem.

akteamster

no cel...b4 lets say a few months ago...the highest it would idle at a cold start was 1500 rpm...and recently it went up to 2000rpm...im going to look into fixin my fitv...any other suggestions?

tealbubble

https://honda-tech.com/zerothread?id=699787

its a miracle there's a write up
searched fitv

akteamster

im going to try that tom...its too cold right now....

tealbubble

lmk when you try it out...

akteamster

before i go try dis...r u sure my 96 civic dx has an fitv?...i saw on that post somewhere that only obd0 and odb1 cars have it....my car is odb2....?

Maginnovision

(not trying to thread jack but...)

Why do ek's idle higher than egs?

90gs

i've replaced all that **** on one of my cars (map, tps, iacv, fitv) and its not the fitv. if it is fluctuating then its the IACV. all the fitv does is it has wax in it that warms up and expands and doesnt let the extra air in anymore and idles down.

civicboisi

check your radiator fluid...alot of the time, when its really cold out, the fluid would drop some in your rad. Open the cap, inspect and if low, add some while your car is warming up. DONT DO THIS IF YOU'VE BEEN DRIVING AWHILE!!!

Note...while the cars warming up, add fluid and check to see if bubbles appear. This could be your problem...low coolant causes bad idle also.

s73

its more likly to to be a iacv problem, EK civics do not have a fitv....is the idle normal when the car is warm?...if its not, then you can adjust the idle back to spec

if you have a y8 the iacv is on the TB (autos).....or in the back of your IM (manual)

if you have a y7....they are all on the TB.....

try to take off the iacv and clean up the screen inside.....

i don't think it would be a coolent problem.....because the idle becomes normal after the car is warmed up.....

tealbubble

eg and ef do have fitv so ek might also..... what manifold are you using stock?
fitv fluctuates idle until coolant has warmed up.... i had to fix mine and it wasnt the iavc
i have an EK, but im using a obd1 manifold

when my iavc was bad when the car would warm up it would not stop fluctuating like a
vaccum leak but not...so i dont think
iavc stops fluctuating even when the car has warmed up

akteamster

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by s73 &raquo;</TD></TR><TR><TD CLASS="quote">its more likly to to be a iacv problem, EK civics do not have a fitv....is the idle normal when the car is warm?...if its not, then you can adjust the idle back to spec

if you have a y8 the iacv is on the TB (autos).....or in the back of your IM (manual)

if you have a y7....they are all on the TB.....

try to take off the iacv and clean up the screen inside.....

i don't think it would be a coolent problem.....because the idle becomes normal after the car is warmed up.....

</TD></TR></TABLE>
yeah i got a y7...any other advice...IDLE is normal when car is warmed up already just seems to happen on a cold start.

s73

not sure how you are going to attack this problem if the idle is normal at warm up, then it shows that the iacv is doing its job

did you try to clean out your iacv?

here is one test u can do, when you turn on the a/c at full blast....the idle should rise by 50-100rmps.....if it doesn't....it might be a iacv problem...

or if you have a ohm meter....connect the neg probe to the center pin of your iacv...then connect the positive probe to each of the other terminals in turn there should be 16 to 28 ohms...

if everything else is ok, it might be your Purge control solenoid....(it allows the IM vacuum to purge when the engine is warm then cuts off then the engine is cold).....

to test....make sure the engine is cold....find the purge hose on top of your evap canister...(just trace your purge control solenoid....u will find it)....disconnect the hose....hook up a vacuum gauge to the hose....start the engine, and let it idle....there should be NO VACUUM......and when you idle it till the car is warm....then there should be vacuum.....if that test does not have the right results.....find your purge control solenoid

it should be on your IM....if u still don't know...here is a pic (its number 11): http://www.hondaautomotivepart...OW%29

ok....disconnect the purge control solenoid....connect it with some wires stright to the battery....try to blow into the hose (throught the solenoid)....it should open/close as you give it juice (i forgot if it opens when you give it power or its open when you don't give it power....but i know it changes as u give it juice...but if it does not change....your purge control sol is dead)

on ek civics there are a few things that controls cold idle....i think its the iacv and the purge control sol.....we have no fitv's....the fitv is only fround on older d series motors...(eg's and b series motors)....some mistaken that the iacv on newer ek's as the fitv....which is not true....if u look at the y7's....the coolent is sent to the iacv (mounted on the tb) and thats it......eg's the coolent goes to the fitv then to the iacv.....

overrev130

try checking your thermal iacv. Pretty sure that's the problem.

tealbubble

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by overrev130 &raquo;</TD></TR><TR><TD CLASS="quote">try checking your thermal iacv. Pretty sure that's the problem.</TD></TR></TABLE>

damn sherlock did you read the thread..

s73

did u fix the problem?