B18c2 sounding like a rotary

[iceey]

I just recently purchased a 1994 integra vtir it was fine at first but when the aircon was turned on proceeded to sound like a rotary, and was flashing CEL 14 (IACV) .. I ordered another IACV from honbits was running fine for 30mins and came back.


Any help or suggestions would be great ..

[fh93]

Try changing your spark plugs

[trism]

plugs, leads, oil, o2 sensor, could be heaps of things.

[fuzionz]

You mean sound like a rotary as in lumpy idle?


http://www.ozhonda.com/forum/showthread.php?120938-You-Have-Cleaned-the-IACV-BUT-Your-Idle-Is-Still-High-Erratic-Adjust-The-FITV.

[iceey]

Ill try the plugs tomorrow ..

And I've already adjusted the Fast idle control valve with no success .. Plus is throwing CEL 14

[iceey]

so i bought a new IACV.. i cleaned it installed it and it ran heaps fine for 2 days then when giving a proper go entering m2 the light CEL came back again with the same code

when i got to work i removed it and it was filthy as.. so i cleaned it again and its running fine again ..

anyone know why it get so dirty so quickly ?

[Evok]

Flush your coolant
and clean your air filter

give it another clean and you'll be fine.
Coolant leak will also cause a lumpy idle if not bleeded

[iceey]

so a coolant leak can cause this aswel?

i think i do have a coolant leak.. ill try seal that up

[Evok]

so a coolant leak can cause this aswel?

i think i do have a coolant leak.. ill try seal that up

It can but unless its drematic it shouldn't cause a rotary noise. u sure ur mates not playing with u and swapping the map sensor and tps sensor around? haha.
Just make sure ur coolant isn't dirty, give it a flush, bleed it and clean ur air filter.
should be fine after that unless u brought a faulty iacv which does happen quite often.

u said u played with ur idle screw, adjust it back so it doesn't cause a problem. goodluck!

[iceey]

Ahaha nah I'm pretty sure they aren't playing with me ahaha

Umm yeah I'm on my 3rd IACV so far .. And it can't always be faulty .. I think it's just getting dirty real fast, can anything cause that ?

Yeah I'll do the coolant flush soon and ill make sure to change the air filter ..

And I'll get back to you guys thanx

[kraftycuts]

If your new IACV is covered in oil then check and change the PCV valve.
It seems that the PCV valve is allowing oil to flow back into your intake and collecting on your IACV.

[iceey]

i flushed out the cooling system helped for a bit but started again on the way to work ..

the day i flushed it out i cleaned the sensor..

could the air temp sensor have anything to do with it ? coz i took it out today and it was oily as furk ..

[iceey]

If your new IACV is covered in oil then check and change the PCV valve.
It seems that the PCV valve is allowing oil to flow back into your intake and collecting on your IACV.

how do you check the pcv valve ?

[duzy]

May as well replace it. It'll be a bitch and you'll need those long needle nose pliers (straight and 90degree bend pliers)

http://www.ozhonda.com/forum/showthread.php?145541-B18C2-PCV-Valve-Replacement.-WITHOUT-removing-intake-manifold!

[kraftycuts]

how do you check the pcv valve ?

As in the link from Duzy.

Yeah just change it, most likely would be clogged/dirty and its cheap to buy a new one.
its a very straight forward fix, but getting to it will be a little challenging.

[iceey]

I bought a valve today gonna install it tomorrow and ill let you guys know how it goes

[dougie_504]

subscribed for interest's sake

[iceey]

I removed my pcv valve and it was completely filty.. On the valve and inside the pipe leading to the manifold ..

Ill let you guys know if it comes back .. Hopefully it doesn't come back

[Jasemas]

If you shake the old pcv and hear nothing its clogged/damaged
You can clean em with carby cleaner

[iceey]

Nah no luck guys .. Cleaned it and changed it worked for a good day and came back on the way to work -_- any more suggestions ?

[kraftycuts]

Did you clean the IACV again after the PCV Change?

[iceey]

Yessir I did ..

I reset my ecu and its running fine .. I think it's a break through but ill try finding another ecu and changing it over

[iceey]

i am pretty much stumped on what it is ..

does anyone else have any suggestions on what it is?

[chez00]

Time for a compression check? If you're getting oily IACV after that short running, maybe you have blow-by?

[iceey]

Time for a compression check? If you're getting oily IACV after that short running, maybe you have blow-by?

Blow by ?

[chez00]

Blow by ?

cracked rings, cracked ring lands, excessive piston-to-bore clearance etc. all cause compression to "blow-by" the piston and into the crank case. This causes rough running. A simple compression check will show you one way or another. A leak down test would be the next step to workout exactly what's gone wrong if you have abnormal compression readings.

[kraftycuts]

Have you also tried the ignition parts? fuel delivery?
Ignition: Spark plugs, Spark Leads, Distributor cap, Distributor rotor, and if all else fails ignition coil.
Fuel delivery: clean and check fuel injectors, check fuel pressure regulator, change fuel filter, check fuel pump.

If you are getting normal mid and high range power but poor idle this might be areas to check also.

[dc292177917]

CEL light is another issue NOT related to the rotary sound,
your AC compressor is ****ed if the rotary sound only comes when AC is on.

[iceey]

CEL light is another issue NOT related to the rotary sound,
your AC compressor is ****ed if the rotary sound only comes when AC is on.

How can it not be man .. Obviously the cel light comes on when it starts idling lumpy ..

[dc292177917]

try taking off the AC belt first to see if the rotary sound still exist

[iceey]

try taking off the AC belt first to see if the rotary sound still exist


yeah it still does

[Rage King]

does the rotary sound exist with or without the A/C on idle? how about when in full load? (normal driving) ?

[iceey]

does the rotary sound exist with or without the A/C on idle? how about when in full load? (normal driving) ?

The lumpy idle is on with and without the aircon on.. It goes away on on full load

[iceey]

Just an update

Ever since I flushed the cooling system, cleaned the IACV , changed the pcv valve and reset the ecu it ran fine for 2 weeks but it comes back randomly, CEL light back on and lumpy idle but then goes away with the CEL light still on. I park it for a bit and and seems to just go away -_- ..

And I did notice it seems to always come on on really warm days (which has been these couple of days)

Please help

[Jasemas]

what is the cel code?

[iceey]

14 - iacv

[BG-33P]

Could it be some sort of wiring issue? Have you looked into anything like that yet?

How'd the compression test out?

[iceey]

yeah i think it may be a wiring .. ive noticed that it always comes on when the car gets wet like a car wash .. or when it starts raining

[iceey]

Something shorting out maybe when getting wet