High Idle Problem with Civic?

EFFECTIC DESIGNS · Postby **EFFECTIC DESIGNS** » March 12th, 2011, 1:59 pm

mechanic took apart the throttle body thingy and cleaned it out etc
He put it back in and now the car idles at 1500 RPM when in park or N

Dies down when you put in Drive or Reverse.

This never happened before. Is it a simple problem I can fix instead of carrying this back to a mechanic?

I guess I could leave it as it is, but was nice having a car that idles SILENT when its in park and you waiting on someone etc.

g unit · Postby **g unit** » March 12th, 2011, 9:14 pm

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He will solve all your problems, at a low cost. Trust me!!!

0001 · Postby **0001** » March 12th, 2011, 11:26 pm

i agree Jason will solve all ur civic problems man

EFFECTIC DESIGNS · Postby **EFFECTIC DESIGNS** » March 13th, 2011, 12:09 am

One thing though I will fraid to leave my car overnight by him or anyone for that matter.

I go call him and find out whats the process and if he can fix it same day.

3stagevtec · Postby **3stagevtec** » March 13th, 2011, 1:52 am

Long shot - Did you clean out the Idle Air Control Valve (IACV) in the throttle body? If it is really dirty, that may cause the car to idle really low / stall..

EFFECTIC DESIGNS · Postby **EFFECTIC DESIGNS** » March 15th, 2011, 3:24 am

^ The mechanic cleaned it out.

However I edited the post since the symptoms seemed to have disappeared. Apparently the car fix magically on its own with a lil driving for a few days.

However it now has a high idle problem lol

3stagevtec · Postby **3stagevtec** » March 15th, 2011, 3:50 am

Long time I haven't played with a Civic, but IIRC, there may be some adjustment possible with the IACV.. Try slackening the screws and turning the whole unit or something along those lines..

I remember I got idle issues after cleaning mines out and it needed some minor tweaking to sort things out. Someone else may be able to explain better..

Postby **r3iXmann** » March 15th, 2011, 7:43 am

Adjust idle screw..

let the car reach normal operating temperature

take a flat head screwdriver and insert into the slotted groove on the throttle body and turn half turn at a time

clockwise is to reduce idle rpm i think

Postby **Chiney** » March 15th, 2011, 8:53 am

^^ is that the same for the rd5 cr-v ? with the k20a4 engine?

Postby **r3iXmann** » March 15th, 2011, 9:37 am

Chiney wrote:^^ is that the same for the rd5 cr-v ? with the k20a4 engine?

i've never messed with a k20 but once u have an idle screw,the procedure is the same

just make sure u set the correct idle (this value is usually under the hood on a white sticker on the bonnet or u can check online for this)

Postby **Chiney** » March 15th, 2011, 4:39 pm

thx!!
jus moved from a sr20VVL to a k20a

so i learning this honda thing slowly

3stagevtec · Postby **3stagevtec** » March 15th, 2011, 8:16 pm

Actually, if the screw is still in the factory set position, you should not interfere with it.. if you are having idle issues, it would usually mean the air passages in the throttle body is getting clogged up and needs cleaning.. playing with that screw should be a last resort..

so I was told..

Postby **r3iXmann** » March 15th, 2011, 9:53 pm

3stagevtec wrote:Actually, if the screw is still in the factory set position, you should not interfere with it.. if you are having idle issues, it would usually mean the air passages in the throttle body is getting clogged up and needs cleaning.. playing with that screw should be a last resort..

so I was told..

yup

Postby **Chiney** » March 15th, 2011, 10:43 pm

tried cleaning.. i think i will service injectors and have a diagnose done time..

EFFECTIC DESIGNS · Postby **EFFECTIC DESIGNS** » March 16th, 2011, 10:13 am

3stagevtec wrote:Actually, if the screw is still in the factory set position, you should not interfere with it.. if you are having idle issues, it would usually mean the air passages in the throttle body is getting clogged up and needs cleaning.. playing with that screw should be a last resort..

so I was told..

Yeah I turn the screw both clockwise and anti and it did nothing.

Seems to be something else. Will have to check a mechanic.

car moving way to fast without pressing any gas. I does like to pull up handbrakes when waiting by traffic lights instead of having to continuously mash brake or put it in park.

when the idle low you don't have to pull the ebrake to hard to stop it from rolling.

sharkmouth · Postby **sharkmouth** » April 6th, 2012, 9:56 pm

you solved this problem???i serviced my throttle and now i have this exact problem...any advice to rid my self of this high idle.its sometimes 1500 or 1800