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TOPIC: idle issue with my fi 2008
#1009092
ctkog (User)
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idle issue with my fi 2008 10 Months ago  
Since bringing it home a few months back have notice idle varies from ride to ride. About half the time it idles at 1100rpm, recently it went to 1300-1400 for a ride, today it was at 850-900. It has Cobra 2-into-1 exhaust with the 02 sensors disconnected.. and as you can see from the pic the 02 connectors are jumpered with something. Had never heard of that one before. PO says all the work was done by a reputable shop and he had receipts. Am getting the 02 error codes constant that don't clear even by disconnecting battery. The throttle cabling looks fine and not binding. Also has a dynojet power commander III. So i don't know where to start, any advice to get this thing idling better would be appreciated.

 
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Last Edit: 2017/04/26 21:07 By ctkog.
 

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#1009093
Shores (User)
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Re:idle issue with this fi 2008 10 Months ago  
Remove the Dynojet and use the stock ECU. Only one person on this forum that I know of has ever gotten an aftermarket ECU to work. The stock one adjusts just fine. Reconnect the O2 sensors.....its fuel injected for Gods sake! May have been a reputable dealer, but they didn't know what they were doing. Run Seafoam per instructions through the tank every four tanks or so. Marvel Mystery Oil cleans things up also. Receipts don't make it right!
 
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Last Edit: 2017/04/26 21:12 By Shores.
 

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#1009095
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Re:idle issue with this fi 2008 10 Months ago  
Shores wrote:
Remove the Dynojet and use the stock ECU. Only one person on this forum that I know of has ever gotten an aftermarket ECU to work. The stock one adjusts just fine. Reconnect the O2 sensors.....its fuel injected for Gods sake! May have been a reputable dealer, but they didn't know what they were doing. Run Seafoam per instructions through the tank every four tanks or so. Marvel Mystery Oil cleans things up also.

+1 Power to the carbs!
 
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#1009097
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Re:idle issue with this fi 2008 10 Months ago  
That was a quick response, thanks Shores. I planned to work on getting the 02's reconnected as I had read in threads about them causing problems being disconnected. One connector reaches and the other one is short 6" so I will have to extend the wiring. Also a bummer is the PO didn't pass on the original stock ecu to me.
 
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Last Edit: 2017/04/26 21:19 By ctkog.
 

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#1009098
Shores (User)
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Re:idle issue with this fi 2008 10 Months ago  
Read this thread. You can pull the sensor wires out of the loom to get more length. No need to extend them.
Do you have a tach?
http://roadstarclinic.com/component/option,com_fireboard/Itemid,187/func,view/id,851204/catid,13/
 
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Last Edit: 2017/04/26 21:23 By Shores.
 

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#1009099
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Re:idle issue with this fi 2008 10 Months ago  
Awesome thank you Shores. Will any stock ecu work... does it have to be from an '08... does it have to be reprogrammed?

Yes, it has a tach.
 
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Last Edit: 2017/04/26 21:32 By ctkog.
 

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#1009100
Shores (User)
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Re:idle issue with this fi 2008 10 Months ago  
Ctkog wrote:
Awesome thank you Shores. Will any stock ecu work... does it have to be from an '08... does it have to be reprogrammed?

Yes, it has a tach.


I imagine 08 and up are all the same. Check the part numbers on the Yamaha website. What happened to the old one? You can't remap the Roadstar ECU. You can on the Warrior, but they are different.
 
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#1009101
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Re:idle issue with this fi 2008 10 Months ago  
Shores wrote:
Ctkog wrote:
Awesome thank you Shores. Will any stock ecu work... does it have to be from an '08... does it have to be reprogrammed?

Yes, it has a tach.


I imagine 08 and up are all the same. Check the part numbers on the Yamaha website. What happened to the old one? You can't remap the Roadstar ECU. You can on the Warrior, but they are different.

Previous owner may have the old ecu. He wasn't mechanical so the shop may have just kept, it I don't know. I still have his phone number and could try calling him.

So when you say it can't be remapped does that also mean the only ecu that will work correctly on the bike is the one that originally came on it?
 
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Last Edit: 2017/04/26 21:44 By ctkog.
 

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#1009103
Shores (User)
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Re:idle issue with this fi 2008 10 Months ago  
Ctkog wrote:
Shores wrote:
Ctkog wrote:
Awesome thank you Shores. Will any stock ecu work... does it have to be from an '08... does it have to be reprogrammed?

Yes, it has a tach.


I imagine 08 and up are all the same. Check the part numbers on the Yamaha website. What happened to the old one? You can't remap the Roadstar ECU. You can on the Warrior, but they are different.

So when you say it can't be remapped does that also mean the only ecu that will work correctly on the bike is the one that originally came on it?


Yes, a stock one from any other FI Roadstar.
 
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Last Edit: 2017/04/26 22:12 By Shores.
 

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#1009104
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Re:idle issue with this fi 2008 10 Months ago  
Oh nice!!!
 
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