Odd Idling

[o0kuam0o]

ok.. check this out.. sometimes, when i start my car, i let the car idle for a few minutes... right? ok.. so it's idle is wierd sometimes for the first few minutes of my car running.. it automatically revs the engine up to 2k RPM then back down to regular idle, then back up to 2k RPM, then back down, then back up, etc.. it does this for a minute or two, especially when it's cold out.. i'm jus wonderin why its doing that.. thnks..

 

[steve98ex]

its normal, its to get the engine up to operating temperature

 

[RaYrAy]

and to heat up the cat

 

[civic31g]

Mine did that for a while also, i replaced the pcv and now it works fine.

 

[RaYrAy]

Originally posted by civic31g
Mine did that for a while also, i replaced the pcv and now it works fine.

the positive crankcase ventilation valve? I have never heard of that causing idle issues. are you sure you didn't mean the icv? the idle control valve located on the backside of the intake manifold?

 

[civic31g]

Originally posted by RaYrAy
the positive crankcase ventilation valve? I have never heard of that causing idle issues. are you sure you didn't mean the icv? the idle control valve located on the backside of the intake manifold?

yeah that thinggy i got my accronumys mixed up sorry.

 

[RaYrAy]

werd

 

[steve98ex]

it should still idle a little high to get warmed up

 

[sherpagoodness]

if youre having the jumping idle its because your fast idle control valve needs to be rebuilt

 

[BioHazard the Reaper]

mine idles high when first started.....

 

[Sound Streamin']

Originally posted by sherpagoodness
if youre having the jumping idle its because your fast idle control valve needs to be rebuilt

This was already said. Read the reply's before you post and waste bandwidth.. like Im doing right now.

 

[Rick James]

Originally posted by BioHazard
mine idles high when first started.....

i think most cars do. mine does

 

[o0kuam0o]

of course your the car idles high during the cold.. but yea, i think i do need the icv.. how much does that cost? thnks.

 

[SLOAZZ94]

MINE DID THE SAME THING AND IT WAS THE FAST IDLE CONTROL VALVE. BUT U DONT NEED TO BUY A NEW ONE. ALL U NEE TO DO IS REMOVE IT FROM UNDER THE THROTTLE BODY AND OPEN UP THE BACK SIDE OF IT . THERE IS A WHITE PLASTIC GROMMET LOOKING LIKE THING. JUST SCREW IT DOWN, PUT IT BACK TOGATHER AND YOUR PROBLEM WILL BE FIXED. THATS WHAT I DID AND IT FIXED MY PROBLEM. sorry bout the caps, i forgot the caps lock key was on and i didnt want to rewrite all of that.

 

[sherpagoodness]

Originally posted by Sound Streamin'
This was already said. Read the reply's before you post and waste bandwidth.. like Im doing right now.

the only reason i said anything was because i didnt think it was located on the back of the intake mani...thought he was talking about something different. But like the maigne above me says, its on the bottom of the throttle body and all you have to do is rebuild it...problem solved...sorry i wasted your precious bandwidth

 

[buzzbombtom]

the car does this sometimes to warm up like said but your o2 sensor could be bad, or the idle sensor could be messed up, or the mas air sensor, bu ti belive that it is a normal thing, you should get it looked at

 

[Tom]

the car does this sometimes to warm up like said but your o2 sensor could be bad, or the idle sensor could be messed up, or the mas air sensor, bu ti belive that it is a normal thing, you should get it looked at

honda's dont have mass air sensors, they have a map sensor(manifold absolute pressure sensor), a pcv valve can cause idle to be off,honda actually recommendthat they be changed every 60,000 miles, and also the electronic air control valve on the back of the manifold can also be the problem, but in either case you should take it to a qualified tech and have it diagnosed.

 

[hondadna]

has any one ever had to replace there water pump?...........cause I had a 3g accord and it did the same thing and I did all the things you have said and it still idled funny till some one at my old club (3gees.com) told me to cheak the pump so I did and there was nothing left of it.....my 2nd EG did the same thing when I frist got it, replaced the pump and no more idle problem so if you cant find what is wrong cheak the pump.

 

[buzzbombtom]

sorry that is what i ment to say, but in my defense they do pretty much the same thing to my knowlage

 

[Tom]

your right they do the same thing, tell the ecu how much air is entering teh car by sending a voltage signal, fortunately honda makes them smaller then other manufacturers do.