Lowering Idle
Thread Starter
Schumacher '10 WDC
Joined: Sep 2006
Posts: 1,747
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Lowering Idle
I know what many of you will ask but is there any way to lower the engine idle speed of the ES1 5-speed? I think I would need a reflashed or reprogrammed ECU but just wondering? My main reason is to try and get a slightly better fuel economy, Especially when the winter makes the car idle at 1300RPM until it is at operating temp. Then it drops to 600RPM. I just want it to start and automatically run at 600 instead of 1300. Thats IT.
Thanks.
Please don't post any crude remarks. Thanks its greatly appreciated.
BTW I did search, nothing for 2001-2005 Civic
Thanks.
Please don't post any crude remarks. Thanks its greatly appreciated.
BTW I did search, nothing for 2001-2005 Civic
Honda-Tech Member
Joined: Mar 2006
Posts: 4,825
Likes: 2
From: Clarksville, TN
Re: Lowering Idle (Tadehi)
There is a reason it idles at a higher speed on a cold start... leave it like it is... If you tried to start it and leav it at a lower idle, it would die out, and if you could keep it running, it would brun way rich until warm up.
Kind of like a cold start on a carbuerated car... The carb has a choke hold in, and pull off valves/solenoids that bring the idle down with engine temp...
Just leave it like it is... You will not see any benifits from lowering it.
Kind of like a cold start on a carbuerated car... The carb has a choke hold in, and pull off valves/solenoids that bring the idle down with engine temp...
Just leave it like it is... You will not see any benifits from lowering it.
Joined: May 2006
Posts: 182
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Re: Lowering Idle (Tadehi)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tadehi »</TD></TR><TR><TD CLASS="quote">I know what many of you will ask but is there any way to lower the engine idle speed of the ES1 5-speed? I think I would need a reflashed or reprogrammed ECU but just wondering? My main reason is to try and get a slightly better fuel economy, Especially when the winter makes the car idle at 1300RPM until it is at operating temp. Then it drops to 600RPM. I just want it to start and automatically run at 600 instead of 1300. Thats IT.
Thanks.
Please don't post any crude remarks. Thanks its greatly appreciated.
BTW I did search, nothing for 2001-2005 Civic</TD></TR></TABLE>
You just made a great argument for leaving it like it is.
Thanks.
Please don't post any crude remarks. Thanks its greatly appreciated.
BTW I did search, nothing for 2001-2005 Civic</TD></TR></TABLE>
You just made a great argument for leaving it like it is.
Thread Starter
Schumacher '10 WDC
Joined: Sep 2006
Posts: 1,747
Likes: 0
Re: Lowering Idle (01HonderCivic)
Thanks for the serious answers I APPRECIATE IT.
And yes thanks for pointing out the reason in my original statement. LOL
Just wanted to know if it was possible.
And yes thanks for pointing out the reason in my original statement. LOL
Just wanted to know if it was possible.
Honda-Tech Member
Joined: Mar 2006
Posts: 4,825
Likes: 2
From: Clarksville, TN
Re: Lowering Idle (Tadehi)
It is, but you wouldn't need, or want to for that matter. It is possible to damage the engine doing it enough due to lack of fuel for operating temprature at the time.
believe me, in terms of emissions, your car wants to reach normal operating temperature as quickly as possible. it runs open loop until the o2 sensors get up to their operational temperature range then drops the idle and goes into closed loop.
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Thread Starter
Schumacher '10 WDC
Joined: Sep 2006
Posts: 1,747
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Re: (skipbarber)
I know how the cooling system works. I also know that the Cat only works well if warm which is why I assume it is in the manifold for the LX. But I simply thought since the engine is reving at 1300RPM and the combustion temps are close to 2000 degrees F it would heat up rather quickly. But I'm only 18 and have a very limited knowledge of thermodynamics and engineering. Thanks again for clearing all this up I find it interesting to know more every day.
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