aeenox

Well when i start the car. It idles up and down from 3000 rpm to 1000 rpm. Someone told me that it does that cause i need a new intake manifold cause its clogged . Is that right?

Since 1983

iTrader: (3)

im gonna go with no, could be a few things but sounds like typical honda problems, IACV might need to be cleaned

aeenox

whats IACV?

nekoabandoned

iTrader: (-1)

idle air control valve , its on the back of your intake manifold .

b16adx

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nekoabandoned &raquo;</TD></TR><TR><TD CLASS="quote">idle air control valve , its on the back of your intake manifold .

</TD></TR></TABLE>

Yup try that or it could just be a vacuum leak or a hose that has come off

hibbarD16z6

check the runners on your intake manifold for cracks, friend has a cracked manifold and his car revs at an idle

Unseen Racer

my friends honda accord had this problem.
he changed the intake maifold and BAM!
the problem went away.

Unseen Racer

my friends honda accord had this problem.
he changed the intake maifold and BAM!
the problem went away.

he also said that at 1st he changed the spark plug wires and it went away but came back again a week later.

so his neighbor told him to change his intake manifold and its been gone since then

aeenox

Yea cause i was told to change the intake manifold. But imma check all the hoses and the iacv. How do i clean the iacv?

SinsEvil666

i can also be your FITV....Fast Idle thermal valve, clean that out too as well as the Idle Air control valve. Here is how to clean the FITV....

https://honda-tech.com/zerothread?id=1564019

Grab some throttle body cleaner and spray it on ur Intake Manifold gasket all around and see if it changes the RPM when spraying...if it does....Need a new gasket...and while ur at it..clean the manifold from the inside...

aeenox

Alright cool

redrocket

Sounds exactly like the problem i had. It was FITV, fixed in 30 min

blaze2010

last thing to add i had an accord as well 90 when i redid the clutch with a light weight fly and lightened clutch it threw it off as the obd-0 didnt know how to adjust the cold idle to acount for it... just a side note...

aeenox

Well i cleaned the IACV, and i still have the same problem. I cleaned out the gaskets and the cover. So should i go for the FITV now?

hondamark35

90% of the time, this is a vaccum leak.

if you've changed anything or worked on anything in this area, check that first.

otherwise, you can run the engine, let it idle and spray carb cleaner or break parst cleaner strategically around the manifold and related parts listening for a change in the idle (it may smooth out slightly or rev up some more)

this will get you in the neighborhood of your leak

mattyv

take off your fitv screw the plastic piece inside down. problem solved ill put 5 on it -.-

aeenox

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mattyv &raquo;</TD></TR><TR><TD CLASS="quote">take off your fitv screw the plastic piece inside down. problem solved ill put 5 on it -.-</TD></TR></TABLE>

So are u saying to bust this?

https://honda-tech.com/zerothread?id=1564019

Cause tomorrow before i went to work i was gonna clean out the fitv. But 1st imma spay the brake cleaner around the intake manifold

instrument

probably tps, skunk sells one now for like 20 bucks on ebay.

http://www.team-integra.net/fo...Topic

thats very helpful as well.

javierasous

Disassemble de IACV completely. There is a piece inside the IACV that oscillates and gets stuck with dirt. Just clean it up.

aeenox

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by javierasous &raquo;</TD></TR><TR><TD CLASS="quote">Disassemble de IACV completely. There is a piece inside the IACV that oscillates and gets stuck with dirt. Just clean it up.</TD></TR></TABLE>

How do u take apart completely cause i was trying to but i couldnt.

Brick Top

cover your hand over the throttle body with the car running. it's gonna suck your hand really hard. if the car does not die, it's a vacuum leak.

aeenox

well i cover the throttle body and the car shut down. So i dont have a vacuum leak. So i guess imma just buy a new intake manifold. Would a d16y8 manifold fit a d16z6?

fryguy190

u dont need to buy a whole ne intake manifold. its gota be something little. how long has it been doin that. also u might want to check ur idle screw.

and yea a d16y8 manifold will fit. how much r u gona get it for. b/c i will be better for ur z6.

i threw a y8 manifold and a GSR throttlebody on my car... and its a big improvement.

aeenox

Well my friend totaled his 99 civic so imma get it from his car...he will prob sell it to me complete for like $30. Wats a better engine a d16z6 or a d16y8? cause i was also thinkin of buying his engine to built a bit. The car was idling like that when i bought it which was like 1 month ago. but i have been driving it for 2 weeks

Brick Top

if you have an FITV under your throttle body, then use the procedure that was posted above.
https://honda-tech.com/zerothread?id=1564019

a lot of the time this is the cuprit. but this is only a temporary fix though. honda doesn't recommend tamporing with it, only to replace with a new fitv set to factory settings. it's around $50