While riding my engine light comes on and stays lit for about 5 seconds then goes off, minute or so later comes on again then goes of etc etc. any ideas? Oil is full running 40 psi at cruising speed 10 psi at idle. Battery is charging 12.5 volts.

 

Had the samething happen last yeardown in Califoracate. Passed a 45 mph truck on a two lane,
Ihit the rev limiter and 20 seconds later the engine
came on. Pulled into Ealk Grove shop they told me Number one cylinder ran lean, cleared the code so I headed home to Reno. Reno shop did a redyno tune with my S.E.Race Tuner, and that stopped almost all of my decel poping too.

 

Had the same issue couple months ago. Had it put on the machine and they adjusted my hot and cold idle and did a stage one to match my exhaust. They were honest and said it was hard to be sure if they nailed the problem since nothing destinctive showed up on the machine, but it seems to have worked so far.

 

Check the historical codes for a start

 

How do you check codes? Can you reset them without going to dealer?

 

Yes you can clear it.

The IM (instrument module) is capable of displaying DTC's (diagnostic trouble codes).
Speedometer Self Diagnostics: The speedometer is capable of displaying and clearing speedometer, tachometer, TSM/TSSM and ICM/ECM Diagnostic Trouble Codes (DTC).

1- Turn Ignition switch to OFF & Run/Stop switch is to Run.

2- Push odometer reset button in & hold.

3- Turn ignition switch to Ignition and release odometer reset button. Background lighting sould illuminate, speedometer needle should sweep its full range and indicator lamps (battery, security, low fuel, check engine and cruise) should illuminate. The word “diag” should then appear.

4 - Push the odometer reset button once and you will see the selection menu "PSSPt" with the first P flashing.

5 - Each letter represents an area of the diagnostics module. The module that is flashing is the one you are going to check. To move from one letter (module) to the next, you push the odometer reset button one time. (from P to S to SP to t and back to P, etc.)
P = ECM/ICM (Electronic Control Module [EFI] / Ignition Control Module [Carbureted])
S = TSM/TSSM (Turn Signal/ Turn Signal Security Module)
SP = speedometer
T = tachometer

6 - To get the DTC within an area of diagnostics, push and hold the odometer reset button in for 5 seconds and release. If there are any DTC’s the code will be displayed or the word “none” will appear if there are no DTC’s. Push the odometer reset button again to view additional codes if they exist.

7 - Record the codes.

8 - If DTC’s are not to be cleared, Press and release the odometer reset button. Part number of module will be displayed.
NOTE: To determine if a code is current or historic, clear the displayed code by pushing in and holding the odometer reset button ( longer than 5 seconds) until 'clear' comes up. Release the odometer reset button. Turn OFF the ignition switch. Run your bike and shut it down then recheck the DTC’s again by repeating steps 1 to 9. If the code is current it will reappear.

9 – Press and release the odometer reset button to continue to the next module.

10 – Turn Ignition switch to OFF.

 

check engine light is indicating a sensed failure.
Need to shut down and pull up the troubles if any.
If none, most likely a faulty ground someplace.
also your voltage seems a little low for highway speeds.
I would check the electrical system.
Battery condition, cables clean and tight both ends, Starter
mounted tight.
the stator to volt reg plug and volt reg to the main C/B under the seat.
If this is good I would do a charging system check.
Low voltage can cause the ECM and sensors to flick the check engine light on and off.

 

Thanks Dawg. That saved me a trip to the dealer - hate not having the bike available.