*IACV Problem [UPDATED PICS]

i have an idling problem... my EG likes to idle between 1.5K and 2K...

i cleaned my TB and it didnt do a great deal...

i went out and bought a 12mm spanner to clean my IACV and it was almost impossible to take the hoses off it...

after almost killign myself taking the hoses off i looked at the lil metal tubes that come off the IACV and into the hose and it was completely covered in rust... and a chalky slime...

i cleaned out the filter in my IACV which was clogged up with heaps of hard black Sh*t... put the IACV back on... leaving the rust i couldnt get off on there still...


what has happened???? why is there rust in my hoses???
and it looks like its been developing over a long period of time...

i did not drive the car for about 3 months... im not sure if that caused anything...

i figured that my radiator has rusted up and my hoses have collected rust from it...

but theres so much slime... looks like that light coloured mud...

can this be fixed???

also would my water pump need changing????


b4 i forget... always on really hot days my car overheats...


wat type of costs would be involved in fixing this issue??? and should i take it to a dealer to fix while i have my major service or is there somewhere good i can take it to????



if anyone can help i'd like to know wat i can do...


sounds very expensive... :'(

Updated Pics...
http://img65.imageshack.us/img65/9559/dsc00772hc3.jpg

http://img65.imageshack.us/img65/4167/dsc00773kq3.jpg

IACV is becoming a common problem on older model hondas
EG's DC2 etc
give the radiator a good flush and IACV with carby cleaner.
if that doesnt work change the IACV and get the radiator reco'd

theres so much rust clogged up in the hoses...

might go ahead and buy all new hoses...

Quote:

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Originally Posted by AsH_

theres so much rust clogged up in the hoses...

might go ahead and buy all new hoses...

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that would be a good idea too...
just check the radiator main top and bottom hoses too if these abit of build up there. then u might need to replace it but if it doesnt then u might just get away with a flush :D

the top of the radiator is ok...

but the hoses wen u squeeze em in its kinda crunchie...

so i was afraid it'll damage my block...

also is it a good idea to get a new water pump 2???

When topping up you coolent levels, make sure to use proper Coolent, not just water, as plain water is what rusts and corrods shit up.

Take off your intake pipe and start your car. Let it completley warm up. The idle is at 1500 right? place your finger over the hole inside the throttle body, if the revs drop to normal then your IACV is fook'd. Also as for the over heating, you may have a dodgy thermo switch/thermostat, id put money on that this sludgy buildup has made its way to the thermostate housing causing some blocakages.

My advice.
- Completley Drain all coolent.
- Take out thermo Switch and Thermostate and clean.
- Test thermo switch by using a multimeter on in testing for resistance, then place the tip in boiling water and re check to see if resistance has changed.
- Test thermostate by chucking it in boiling water and seeing if it changes state.
- Test your IACV on another working car and vise versa to diagnose weather your IACV is faulty.
- Install everything back (IACV, Switch, Thermo, Radiator)
- Visually inspect all hoses for sludge, take out and blast clean with hose as nessasary.
- Replace Coolent with "Coolent".

I can provide pictures and a manual if you need it.

Cheers
-KB

Quote:

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Originally Posted by kyle

When topping up you coolent levels, make sure to use proper Coolent, not just water, as plain water is what rusts and corrods shit up.

Take off your intake pipe and start your car. Let it completley warm up. The idle is at 1500 right? place your finger over the hole inside the throttle body, if the revs drop to normal then your IACV is fook'd. Also as for the over heating, you may have a dodgy thermo switch/thermostat, id put money on that this sludgy buildup has made its way to the thermostate housing causing some blocakages.

My advice.
- Completley Drain all coolent.
- Take out thermo Switch and Thermostate and clean.
- Test thermo switch by using a multimeter on in testing for resistance, then place the tip in boiling water and re check to see if resistance has changed.
- Test thermostate by chucking it in boiling water and seeing if it changes state.
- Test your IACV on another working car and vise versa to diagnose weather your IACV is faulty.
- Install everything back (IACV, Switch, Thermo, Radiator)
- Visually inspect all hoses for sludge, take out and blast clean with hose as nessasary.
- Replace Coolent with "Coolent".

I can provide pictures and a manual if you need it.

Cheers
-KB

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sure if you can post up some pix, etc thatll be goodz...

Not expensive at all.

Your idling issue is likely to be 2 things, IACV or FITV. But your going the wrong way about it, because u have a high idle, its a faulty valve rather than a dirty valve.

The overheating problem will be your fan switch located at the back of the thermostat housing.

REP points me biaches :P

Quote:

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Originally Posted by pornstar

Your idling issue is likely to be 2 things

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Techniaclly actually is only likley to be one thing. "A vacuum leak", A vacuum leak can occur through a number of things inlcuding 2 "the FITV and IACV."

Hahahaha, but yeh your 100% right and im going to the moooooon....!

technically you're wrong, if there was a leak other than these 2 items, it would affect his normal accelerating too

but nice try ;)

has any1 experienced the same problem???

i got the same problem
cleaning it didnt solve it

might have to buy a new iacv

expensive???

ill go 2 honda 2moro... probly...

if its a d16y sohc vtec one or a b18a one, i have them

Ash,

When you say it likes to rev between 1500 and 2000Rpm. Do you mean thats approx where it stays level? Or do you mean it pulsates between 1500 and 2000, up and down ect.

now its warms up at 1,500rpm then

used 2 pulsate, now it sits anywhere between that rev range of 1,500 - 2,000rpm

start your car and let it completley warm up, now pull out the plug for the coolent temp sensor. the 2 wire one underneath your vtec solenoid. does the idle drop down?

Quote:

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Originally Posted by AsH_

now its warms up at 1,500rpm then

used 2 pulsate, now it sits anywhere between that rev range of 1,500 - 2,000rpm

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Post a picture of your throttle...
I think I know what is wrong with it.

Quote:

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Originally Posted by TODA AU

Post a picture of your throttle...
I think I know what is wrong with it.

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ill post one up 2moro night...

i've got the same problem with my delsol, just recently

it use to pulsate up and down between 1500 and 2000, when warming up
but now, that stopped and pulsating around that, and started around 1000-200,
ie from cold start, revs at 2000, then slowly drops to 1000rpm, then starts to pulsate from 1000-200, almost like its gonna stall. but this all stops once the engine reaches operating temp

i've tried to clean out the IACV, and it didnt help

Quote:

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Originally Posted by czy_sol87

i've got the same problem with my delsol, just recently

it use to pulsate up and down between 1500 and 2000, when warming up
but now, that stopped and pulsating around that, and started around 1000-200,
ie from cold start, revs at 2000, then slowly drops to 1000rpm, then starts to pulsate from 1000-200, almost like its gonna stall. but this all stops once the engine reaches operating temp

i've tried to clean out the IACV, and it didnt help

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hey man, you should see my IACV... its completely farked ...

im at work atm... waiting for the other guy to come in so i can go to my car to get my usb cable 2 upload some pix...

i replaced my dizzy cap and spark leads and threw in some iridium plugs... runs slightly better... my spark plus were black as... off 2 a service next week... minimal driving... work and thats it...

hey man, get dan and come 2 princes... im bored as here...

i have the same problem as you crazy sol..

basically after like 20 seconds the idle doesnt hold high to warm up.. and instead bounces up and down..

will try to clean the iacv soon

[[[[[[[[ Pictures Updated ]]]]]]]]]]

dude if what im seeing is correct the bottom of your IACV has corrodedc away. and it is pooring collent strait into your intake??? wtf?

when you take off that plate it should be solid underneath so the fluid can resuculate. but thats all gone and it appears water would go directly into your intake .

have you been using alot of coolent latley????

what the fook!!!!!!! o.O

nope... not really... dont think so...

ash, which mechanic have u been going to?
a honda dealer?
i recomend ward while motors in box hill, i just got my car back from them
i got them to do all belts, water pump, and tappet adjustment.

have u got that VTEC problem fixed yet?

nopez...

wat did they charge you for all that???

that looks pretty badly dirty

Quote:

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Originally Posted by AsH_

nopez...

wat did they charge you for all that???

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it cost me about $500

wat else did they do????

ok, im going to change the IACV. better late than never.

I havent driven the car for a few years.

lmaoo