dirty egr or idle control valve?

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Old 02-26-2006, 07:05 PM
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dirty egr or idle control valve?

some times when i just rev my car slightly in neautral or when i come to a stop. the rpms will drop and dip lower then what idle is and the car struggles for a second then hops back up to idle.

only does it when the rpms drop. if i just let the car sit and idle nothing like this happens.

not quite sure what it is. doesn't do it every single time but probably 50 percent of the time.
Old 02-27-2006, 11:04 AM
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i have a similar problem with my 99. but mine does it when i start it up after iv been driving around for a while....say i drive to my friends house ,park , go to store, park, and i come back out to start my baby up and she gives me a low idle after it turns over...if i hold the rpm's around 10g she stayes fine and finds the right idle.....
just a side effect of me neading a tune up at 107,000
my friend who is a mechanic says it could be a possible vacuum leak......?have to look into it....
Old 02-27-2006, 12:05 PM
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Ya, i would also be interested in finding a fix for this. My car does this as well sometimes.....very noticable when driving in stop and go traffic.
Old 02-27-2006, 02:57 PM
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Its could be your EGR. My car does the same thing and is giving me a 1491 code for EGR flow but my car does this when both CEL and TCS light come on-if the TCS light is off my car idels fine? I'm new so bare with me.
Old 02-27-2006, 02:59 PM
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most likely its in the programing of the computer

Timslunch2 your egr ports need to be cleaned. Do a search for egr cleaning and you will find links and diy's that show you how to clean it
Old 03-02-2006, 01:24 PM
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Demolition-x . Did you find out what 's wrong with your car ??
I got the same problem but only happen30% of the time when
the car is idling at the red light intersection ! maybe it is the IVAC
but wonder if my old ( 02 tlp ) radiator anti-freeze might make
the IVAC misfunction ? Time to flush and change the anti-freeze
and hope the problem will disappear >
Old 03-02-2006, 04:39 PM
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Originally Posted by fsttyms1
most likely its in the programing of the computer

Timslunch2 your egr ports need to be cleaned. Do a search for egr cleaning and you will find links and diy's that show you how to clean it
I'm on top of it. The DIY looks to easy to be true are there any curve balls to those direction or is it straight foward? Thanks for not flaming me.
Old 03-02-2006, 05:46 PM
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Originally Posted by acurabum
Demolition-x . Did you find out what 's wrong with your car ??
I got the same problem but only happen30% of the time when
the car is idling at the red light intersection ! maybe it is the IVAC
but wonder if my old ( 02 tlp ) radiator anti-freeze might make
the IVAC misfunction ? Time to flush and change the anti-freeze
and hope the problem will disappear >

its not really a problem, just something i have noticed.

when my tank gets to a 1/4 tanks im gonna run some injector cleaner see if it helps.

if it actually does stall thats when i will take it to the dealer. dunno how they would act if i have an intake
Old 03-03-2006, 01:57 PM
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I did add Seafoam to my tank but it not cure the partiel rough idling .
Old 03-04-2006, 09:25 PM
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Originally Posted by Timslunch2
I'm on top of it. The DIY looks to easy to be true are there any curve balls to those direction or is it straight foward? Thanks for not flaming me.
Pretty strait forward
Old 05-30-2006, 11:25 PM
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Originally Posted by demolition_x
some times when i just rev my car slightly in neautral or when i come to a stop. the rpms will drop and dip lower then what idle is and the car struggles for a second then hops back up to idle.

only does it when the rpms drop. if i just let the car sit and idle nothing like this happens.

not quite sure what it is. doesn't do it every single time but probably 50 percent of the time.

same thing happens to my car could be egr low flow
Old 06-01-2006, 02:07 PM
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FYI . 2 weeks ago I did drain/refill my radiator coolant and my problem is gone
now.The car idles smooth
I did use Honda Coolant
Old 06-02-2006, 01:58 AM
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Idle controle valve.. if your rpm jump up and down only when the car is stopped, check it maybe you can clean it .. or you will need a new one..
Old 06-02-2006, 12:25 PM
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Before changing the ICV I would recommende changing your Radiator Coolant first.!
Old 06-02-2006, 12:37 PM
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Originally Posted by acurabum
Before changing the ICV I would recommende changing your Radiator Coolant first.!
That shoud have nothing to do with the idle
Old 06-03-2006, 07:26 AM
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Originally Posted by acurabum
Before changing the ICV I would recommende changing your Radiator Coolant first.!
It wouldnt do anything ! and our car didnt drive better after changing coolant !
Old 06-05-2006, 02:59 PM
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i could be the sparks plugs as well. i had the same problem a while back ago and it went away after i changed the spark plugs.
Old 06-07-2006, 12:19 AM
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I guess mine has the same problem. I have 80k on my car and it just started doin it. At low speed when my foot is not on the accel it starts to idle really rough and drop to 500 rpm. Is this a big problem? Can I fix it at home?
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