cold start - high rpm in idle

[kymecs]

Hi All,

I've had my SI for a month now and have about 1300 miles on it. When starting the car cold it seems to idle at 2000 RPMS. Once it is driven it seems to go down when I start the car.

I did a search on the forums and could not find anything on this. Is this normal?

Thanks!

[Skyline]

I have an LX, and mine jumps up pretty high when I start it, and then idles over 1000 til I get moving. Once I've been driving a few minutes, it drops down to around 700...

[CarbonLimited]

its normal, dont worry.

[2RotorMotor]

Don't take this personally, but everytime I see posts like this, it makes me feel like I really did get a beginer's car....

Short answer, yes its normal. EVERY FI car has a higher idle after cold start, till the engine nears op temp.

[kymecs]

Thanks for the replies!

[Dmc]

Very normal.. all K series engines are like that
my friends RSX type S 05 does the same

[Downpour]

every car known to man revs higher at first so that the engine can warm up extra fast! ALL cars do it, and im willing to bet a Lambo does it, even tho ive never been in one

[mélihonda]

And it's normal to when Vtec is not engage in low temperature !

just for your information

[Ehcees]

2006 Honda Civic Coupe LX 1.8 ltr AT (non Hybird)


ISSUE: When engine is stone cold & started at 80 degrees outside temp.
Problem: Hi idle of 1500 rpm takes 2 minutes to come down to 1000 rpm.

FACTS
1. Two minutes is much longer compared to all other cars owned & observed for hi idle time.
2. Dealer says no trouble codes & does not know how to fix. Miles are 14,000.
3. Owners Manuel does not provide specification for cold start hi idle.

4. Honda dealer has been asked same question posted on forum: HOW LONG SHOULD HI IDLE STAY @ 1500 RPM 80 DEGREES OUTSIDE TEMP PER HONDA SPECIFICATION?

4.1 Opinions as to how long hi idle should stay @ 1500 are not requested. Just the facts of factory spec are requested. Thanks.

5. Only vague answer from Honda dealer shop foreman is: Computer determines idle. Duh! We knew that.

6. Did call two other Honda dealers prior to bringing car in for service at third Honda dealer. None of the "Service Consultants" at all 3 Honda dealers could provide a specification for high idle rpm and/or time to stay at high idle at a given outside temp. Only one Honda Dealer could quote the curb idle after warm up. (975 rpm) But my Civic sometimes curb idles at 800 rpm & runs fine at this rpm.

8. Reason for concern: Trans does not like being put in drive @ 1500 RPM & sometimes make metal noise.

9. Agreed that 1500 cold start rpm & curb idle 1000 rpm seem OK, but that is not the question or problem. Ehcees seeks a technical spec answer as to how long cold start idle should stay @ 1500 rpm @ 80 degrees outside temp? Can you answer that based on technical documentation?
-----------
Ehcees uses proper nouns & not pronouns. Reason is to avoid confusion as to who or what is being spoken about or speaking, as advised by experts for all web communication. Larger font & text color shown is for easy read. This is a proper & allowed choice that will not change. Thanks for understanding. Please no comments on text composition, font size/color desired. Ehcees is sight impaired.

[leonphelpss11]

Don't VTEC or drive hard when you're car is still getting warmed up

[BigT]

Ehcees,
I don't think there is a specific time spec for high idle. It is determined by engine temp. As the engine warms up the idle comes down. Most likely there is a specific operating temperature the computer is looking for before bringing the idle down. The dealer probably doesn't know this spec because it is programed at the factory and they never have to change it.

[Ehcees]

To: Big T;
Your correct: "Most likely there is a specific operating temperature the computer is looking for before bringing the idle down. The dealer probably doesn't know this spec because it is programed at the factory and they never have to change it."

If there is no spec for the dealer for high idle time & the computer makes the decision, then how can anyone know if the computer and/or the sensors etc feeding data to the computer are correctly adjusting the idle RPM?

How do we know if high idle time is correct?

[Ehcees]

Thanks to leonphelpss11 for telling what Ehcees has know for 30 years.

[Ehcees]

[COLOR="DarkGreen"]Ehcees says:
How long to stay at high idle is the question. The fact of high idle is not an issue. Post makes this distinction.:SHOCKED[/color]:

[Ehcees]

Ehcees says:
How long to stay at high idle is the question. The fact of high idle is not an issue.

[leonphelpss11]

Originally Posted by Ehcees

Thanks to leonphelpss11 for telling what Ehcees has know for 30 years.

Well Ehcees is really damned annoying. You don't have to refer to yourself in the third person and I wasn't directing this at you. I was directing this at the OP. You also do not have to type in huge ass green letters. I think everyone can read this perfectly fine without the aid of big green lettering. I was just making sure he didn't do it.

You could be the owner of damned Honda and I could really give less of a shit. Stop referring to yourself in third person and stop posting in big green letters. I do have one question though, do you actually drive a 8th gen Civic?

[Jardiniboy]

Originally Posted by Dmc

Very normal.. all K series engines are like that
my friends RSX type S 05 does the same

It's not only K-series motors, it's actually all cars.

[Ehcees]

To Leon:
Ehcees uses proper nouns & not pronouns. Reason is to avoid confusion as to who or what is being spoken about or speaking, as advised by experts for all web communication. Larger font & text color shown is for easy read. This is a proper & allowed choice that will not change. Thanks for understanding. Please no comments on text composition, font size/color desired. Ehcees is sight impaired. The above was explained in my first post. Thank you for your advanced cognitive development & sensitivity.

[Ehcees]

Ehcees says:
Wow, if the shop foreman at my local Honda dealer had tech knowledge that was half as good as Jardinboy photo is beautiful, then all answerers would be known. I have a dream.
Please tell all of the following:

Cold start hi RPM?
Outside temperature?
Time from cold start to reach curb idle?
Honda factory specification for time to go from cold start hi idle to curb idle at a specific Temp?

Ehcess has a 2006 Civic LX Coupe, AT, 1.8 ltr. Hi cold start idle has been 1500 RPM @ 80 degrees outside temp. The Si appears to be 2000 RPM cold start hi idle.

[Ehcees]

Please tell all of the following:

Cold start hi RPM?
Outside temperature?
Time from cold start to reach curb idle?
Honda factory specification for time to go from cold start hi idle to curb idle at a specific Temp?

Ehcess has a 2006 Civic LX Coupe, AT, 1.8 ltr. Hi cold start idle has been 1500 RPM @ 80 degrees outside temp. The Si appears to be 2000 RPM cold start hi idle.