Heat Mangement
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Ultimate HDF Member
Joined: Jul 2007
Posts: 5,577
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From: South of Dallas Area, Texas
Heat Mangement
05 Fatty, PCIII, slip ons and K&N AC.
Caught in a wicked jam on I80 last weekend. I was watching the oil temp, it hit about 250. Idling for a LOOONG time. 3 or 4 miles. I heard it start to miss and I am sure it went into Parade mode and cut out the rear cylinder. I pulled onto the shoulder and went for about 2 miles to cool it off. Does anyone know how long it can idle (relatively safely) in limp mode?
MikeM
Caught in a wicked jam on I80 last weekend. I was watching the oil temp, it hit about 250. Idling for a LOOONG time. 3 or 4 miles. I heard it start to miss and I am sure it went into Parade mode and cut out the rear cylinder. I pulled onto the shoulder and went for about 2 miles to cool it off. Does anyone know how long it can idle (relatively safely) in limp mode?
MikeM
Ultimate HDF Member
Joined: Nov 2007
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From: NJ
Can't say I know but 250 doesn't sound all that hot to me. Mine has been as high as 265 in traffic. I did read somewhere that if it does go into limp mode and you're idling, you shouldn't blip the throttle. Seems everytime you do that you're kicking it out of limp. ???
Ultimate HDF Member
Joined: Oct 2007
Posts: 5,257
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From: Leander Texas
I dont believe the pciii had a parade mode and if it did you could not feel it. It must have been from something else. If you have a canned map i would suggest you get a dyno tune done. 210 to 220 is normal for riding. I get 240 in the 100 days in texas traffic.
Road Captain
Joined: Nov 2006
Posts: 709
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From:
250 degrees is not to hot. The engine may have gone into heat protection mode by dropping some cycles as it uses a temperature sensor in the head.
With a PCIII USB you can split the MAP and then richen the rear cylinder in the Traffic speed area of the MAP. I did this and my thighs do not seem to get as hot in traffic.
With a PCIII USB you can split the MAP and then richen the rear cylinder in the Traffic speed area of the MAP. I did this and my thighs do not seem to get as hot in traffic.
The engine has a heat management system that should shut it down before any real damage is done so I say run it till it shuts down. I would probably change the oil after that though, because it was probably above 300 degrees though.
Road Master
Joined: Nov 2007
Posts: 1,223
Likes: 3
From: Peoria, AZ
Operating range is 230-325. "Parade mode" is different from heat management; this is set at dealer's for like the Shriner's or people who spend a lot of time idling in traffic, if requested. At about 325 & above, the HM doesn't shoot gas into the rear injector to reduce the heat while the parade mode shuts down rear cylinder ignition. When this happens, you shouldn't over compensate by wringing the throttle, just cruise and let it cool back down. Buell uses the ignition method for HM and I think HD should go to this way since the gas would cool the engine.
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