Help & FAQs    Search BCF    Members    Groups    Events Calendar
Resend my activation email : Register : Log in 
BCF: Bike Chat Forums


Cbr600f: High idle, no engine braking

 Reply to topic
Bike Chat Forums Index -> The Workshop
View previous topic : View next topic  
Author Message

Lowsider
Borekit Bruiser



Joined: 13 Oct 2014
Karma :
PostPosted: 17:07 - 12 May 2017    Post subject: Cbr600f: High idle, no engine braking Reply with quote
Hi guys.

I have just replaced my throttle bodies as the housing on my old set cracked. On the first ride out as I changed into 2nd gear my 'FI' light lit up for just a second and then my idle jumped up to 4k or so. Also when this happens, I have no engine braking at all. Its like cruise control. Rolled into my street and turned off and I also have green liquid (coolant?) dripping pretty quick out of one of the overflow hoses at the bottom.

I also replaced one of the throttle cables whilst doing the throttle bodies, but these seem free and 'snap' back to closed as they should. The throttle butterflys look closed so I dont think the cable is snagged or anything.

Anyone experienced anything similar? Im pretty sure I installed the new throttle bodies correctly but this new problem might suggest otherwise. Im really at a loss as to what is causing this - I also have video but its not very clear so not that helpful. I initially thought that there might be an idle adjuster but that wouldnt explain the FI light and the 'switch' to high idle.
____________________
Current: 2006 CBR600F.
 Back to top
View user's profile Send private message You must be logged in to rate posts

Hong Kong Phooey
World Chat Champion



Joined: 30 Apr 2016
Karma :
PostPosted: 00:27 - 13 May 2017    Post subject: Re: Cbr600f: High idle, no engine braking Reply with quote
Lowsider wrote:
Hi guys.

I have just replaced my throttle bodies as the housing on my old set cracked. On the first ride out as I changed into 2nd gear my 'FI' light lit up for just a second and then my idle jumped up to 4k or so. Also when this happens, I have no engine braking at all. Its like cruise control. Rolled into my street and turned off and I also have green liquid (coolant?) dripping pretty quick out of one of the overflow hoses at the bottom.

I also replaced one of the throttle cables whilst doing the throttle bodies, but these seem free and 'snap' back to closed as they should. The throttle butterflys look closed so I dont think the cable is snagged or anything.

Anyone experienced anything similar? Im pretty sure I installed the new throttle bodies correctly but this new problem might suggest otherwise. Im really at a loss as to what is causing this - I also have video but its not very clear so not that helpful. I initially thought that there might be an idle adjuster but that wouldnt explain the FI light and the 'switch' to high idle.


There's a way to read the stored FI codes, which should help. I think running it with the sidestand down, or shorting some connector pins on your bike. Did you move / change the throttle position sensor? Also the cables are one for open and other for close, if not adjusted properly you'll be running as if the throttle was cracked open.

Depending on year you may also have a mechanical idle adjuster.
____________________
'81 CG125, '97 FZS600 : '99 CBR600F4, '09 KTM RC8
 Back to top
View user's profile Send private message You must be logged in to rate posts

Lowsider
Borekit Bruiser



Joined: 13 Oct 2014
Karma :
PostPosted: 01:59 - 13 May 2017    Post subject: Reply with quote
Yeah, I only replaced one of the cables but its all fine that end. Whilst I had the airbox and tank off I made sure that it was all as it should be. I will have a look into the code reading thing, I dont know how to do that but Im sure google holds the answer. I think I may have changed the throttle position sensor, as the fuel rail/throttle bodies came with all the sensors attached so I (stupidly) used the ones that came on it. Im tempted to take it all off and replace all the sensors etc with the old ones that I know definitely work.

Its an 06.
____________________
Current: 2006 CBR600F.
 Back to top
View user's profile Send private message You must be logged in to rate posts

Hong Kong Phooey
World Chat Champion



Joined: 30 Apr 2016
Karma :
PostPosted: 12:28 - 13 May 2017    Post subject: Reply with quote
Check connections as the IAT might be loose, causing it to think the temperature is minus 20 and high idle is necessary.
____________________
'81 CG125, '97 FZS600 : '99 CBR600F4, '09 KTM RC8
 Back to top
View user's profile Send private message You must be logged in to rate posts

Lowsider
Borekit Bruiser



Joined: 13 Oct 2014
Karma :
PostPosted: 23:45 - 13 May 2017    Post subject: Reply with quote
Im free tomorrow so I will check the IAT. Im going to see if there are any codes too, been so frustrating thinking what it might be.
____________________
Current: 2006 CBR600F.
 Back to top
View user's profile Send private message You must be logged in to rate posts
Old Thread Alert!

The last post was made 8 years, 327 days ago. Instead of replying here, would creating a new thread be more useful?
  Display posts from previous:   
This page may contain affiliate links, which means we may earn a small commission if a visitor clicks through and makes a purchase. By clicking on an affiliate link, you accept that third-party cookies will be set.

Post new topic   Reply to topic    Bike Chat Forums Index -> The Workshop All times are GMT + 1 Hour
Page 1 of 1

 
 You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum

Read the Terms of Use! - Powered by phpBB © phpBB Group
 
Debug Mode: ON - Server: birks (www) - Page Generation Time: 0.06 Sec - Server Load: 1.02 - MySQL Queries: 16 - Page Size: 46.97 Kb