pcv/autotune high idle
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Cruiser
Joined: Feb 2009
Posts: 171
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From: Ventura, CA
pcv/autotune high idle
I've had the pcv and autotune on my '09 iron for awhile now and have been searching the threads to find an answer to the issue I'm having to no avail.
Ever since the day I installed the pcv and autotune my idle has been much higher than without the two installed. I let it go for a while but it's starting to bother me. Even after coming back from an hour ride, the bike still idles above 1300 rpm's. I know the software has a warmup mode that raises the rpm's until the engine temp reaches 160 degrees, but the rpms are much higher around 1700 in that mode. Then once warmed up, the idle drops between 1250-1350 rpm's and sometimes spikes up to 1400.
When I disconnect all of the pcv/autotune stuff the idle is fine and is within the manuals spec of 950-1050, so it's definitely the pcv or autotune that's causing this. Any help is much appreciated. Thanks.
Ever since the day I installed the pcv and autotune my idle has been much higher than without the two installed. I let it go for a while but it's starting to bother me. Even after coming back from an hour ride, the bike still idles above 1300 rpm's. I know the software has a warmup mode that raises the rpm's until the engine temp reaches 160 degrees, but the rpms are much higher around 1700 in that mode. Then once warmed up, the idle drops between 1250-1350 rpm's and sometimes spikes up to 1400.
When I disconnect all of the pcv/autotune stuff the idle is fine and is within the manuals spec of 950-1050, so it's definitely the pcv or autotune that's causing this. Any help is much appreciated. Thanks.
Road Master
Joined: Jun 2009
Posts: 933
Likes: 1
From: Indianapolis
My only suggestion would be to contact power commander's customer service and see what they have to say. Does the power commander allow you to adjust the bikes idle? It sounds like it is sending a signal to the ECM over riding the stock idle value.
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Cruiser
Joined: Feb 2009
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From: Ventura, CA
So far I haven't found anything in the software that adjusts the idle...I sent the tech support an email last night and haven't heard anything yet. I think you're right fox4, the pcv must be sending a signal to the ecm causing this.
Seasoned HDF Member
Joined: Feb 2007
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From: Edmonton Alberta Canada
I just have the PC5 and idle is the same as before, I have never tried to change anything in the software as Jamie set it up for me and it works perfect. Have you tried it with the PC5 without the autotune?
I would like to be able to bypass the "coldstart high idle", it's very irritating when starting it warm and it's stuck on high idle.
I would like to be able to bypass the "coldstart high idle", it's very irritating when starting it warm and it's stuck on high idle.
While the PC-V will adjust fuel mixture and igntion timing at idle, it does not change the idle speed. This is written in the OEM calibration and a function of the ECM. If you are seeying a change in idle with the PC it is likely a result of the tuning which can affect the idle speed. I would also recommend checking the closed throttle position setting in the PC-V software.
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Jamie Long / Fuel Moto USA
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Jamie Long / Fuel Moto USA
The USA's Leader V-Twin EFI & Performance www.fuelmotousa.com
Contact 920-423-3309
Email jamie@fuelmotousa.com
Cruiser
Joined: Mar 2009
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From: Texas
While the PC-V will adjust fuel mixture and igntion timing at idle, it does not change the idle speed. This is written in the OEM calibration and a function of the ECM. If you are seeying a change in idle with the PC it is likely a result of the tuning which can affect the idle speed. I would also recommend checking the closed throttle position setting in the PC-V software.
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Seasoned HDF Member
Joined: Feb 2007
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From: Edmonton Alberta Canada
While the PC-V will adjust fuel mixture and igntion timing at idle, it does not change the idle speed. This is written in the OEM calibration and a function of the ECM. If you are seeying a change in idle with the PC it is likely a result of the tuning which can affect the idle speed. I would also recommend checking the closed throttle position setting in the PC-V software.
I'm wondering what senses the engine temp and maybe mine isn't sensing properly.
Thread Starter
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Cruiser
Joined: Feb 2009
Posts: 171
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From: Ventura, CA
While the PC-V will adjust fuel mixture and igntion timing at idle, it does not change the idle speed. This is written in the OEM calibration and a function of the ECM. If you are seeying a change in idle with the PC it is likely a result of the tuning which can affect the idle speed. I would also recommend checking the closed throttle position setting in the PC-V software.