engine idle temperature management system

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Feb 16, 2009 | 07:43 PM

#21

sonar_chris

Outstanding HDF Member

Joined: Feb 2005

Posts: 2,780

Likes: 5

From: San Diego

Quote:

Originally Posted by bigdumbnoitall00

a good tune will elimenate the need for it its a band aid fix for the lean conditions that cause it to run hot in the first place,as far as im concerned it doesnt activate untill its allready too hot.

Even a well tuned air cooled motor will overheat in traffic. While it may be HD's band aid for factory lean condition, it will still help a well tuned bike in the same conditions.

Feb 16, 2009 | 08:40 PM

#22

Dionicio

Outstanding HDF Member

Joined: Dec 2007

Posts: 2,803

Likes: 11

From: El Paso, Texas

Quote:

Originally Posted by sonar_chris

Even a well tuned air cooled motor will overheat in traffic. While it may be HD's band aid for factory lean condition, it will still help a well tuned bike in the same conditions.

You are correct. I like it's operation, and it gives me peace of mind that My engine is protected.

Mar 20, 2009 | 04:48 PM

#23

Falconer14

Stage II

Joined: Mar 2009

Posts: 2

Likes: 0

Engine Idle Temperature Management System

I understand the concept, function, and operation (turning it on and off) of the Engine Idle Temperature Management System. My issue is that I suspect the feature is turning on & off by itself. The idle suddenly gets rough and the exhaust from the rear cylinder gets that bitter smell. A cat that I see at the gym says that he has heard that in fact the feature has been doing just that and that there is a download Harley can do to correct it. I have a 2009 Road King Classic. Anybody out there have any ideas about this? Thx.

Mar 20, 2009 | 05:50 PM

#24

ranman469

Road Master

Joined: Oct 2007

Posts: 1,028

Likes: 1

Quote:

Originally Posted by JayStronghawk

Interesting but mine came without it and no desire to add it .. but appreciate the input... My PCIII keeps it cool enough

ok i`m getting confused??

i read in another post that the pc does not change afr below 1400? if so how does it cool?

not being a *** i just dont know?

Mar 20, 2009 | 07:42 PM

#25

HEMSPLT

Cruiser

Joined: Feb 2008

Posts: 166

Likes: 0

From: California Desert

Quote:

Originally Posted by ranman469

ok i`m getting confused??

i read in another post that the pc does not change afr below 1400? if so how does it cool?

not being a *** i just dont know?

In a nutshell, Harley, and other manufacturers, make their engines run lean to help meet EPA pollution limits but a lean engine will run hot. Not a big deal in a watercooled engine but it is more noticible in a stationary air cooled motor. If you add fuel to the fuel/air mixture the engine will run cooler. Aftermarket engine management systems such as PC III, PC V, ThunderMax, TTS, etc, add more fuel at idle, which richens the fuel/air mixture (ratio). This helps the engine run cooler but you are likely causing more pollution. Most, if not all, of the aftermarket fuel management systems are illegal in the People's Democratic Republic of Kalifornia for this reason.