Question Posted By: grizzly08 on 10-6-2011
Back to Questions
|Make of Bike:
|Model of Bike
|Year of Bike
|Other info on Bike
||Stock with pipes & air cleaner
|What's your question?
||Bike had intermitent problem wher it would cut out and not start after running for a while. Now bike is in garage and wont start at all. Cranks but has no spark at plugs. What could be problem. Bike is EFI
- How are you checking spark? The ecm will not allow the bike to spark if there is no spark plug in the head. The crank sensor senses compression and tells the ecm which cylinder to send spark to. There is a really good chance it is the crank sensor that is bad. Disconnect the crank sensor, put a volt meter set on AC voltage on the sensor terminals (sensor side)and crank the motor, the sensor creates it's own voltage, and sends it to the ecm. so if you get no voltage from the sensor, it is bad. By: Guest on: 10-6-2011
- Could be a sensor. Could be a bad coil. Could be simple as bad plugs or wires. Or as serious as the ECM. If it is a sensor it the ECM should have thrown a code, but that means a trip to the shop to read it. Damn electronics... Give me a carb and points. Something I can fix with a screwdriver. :-) By: Guest on: 10-6-2011
- I changed the crank sensor and that isn't it. I used a plug testor that plugs in the wire and both plugs are still in bike. By: grizzly08 on: 10-6-2011
- This is a magnetti/Morelli system, damn hard to diagnose. When Harley approached them about a fuel injection system, they asked for a CHEAP system that would fit a motorcycle, and that's exactly what they got. Have you checked the cam sensor? That would be my next step. By: Guest on: 10-6-2011
- Have you checked the error codes? Pretty sure this works on a 2000
Engine Diagnostics Check Procedure
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.
By: beau on: 10-12-2011
- That does not work on Magnetti/Morelli systems. It only works on 2004 and later Delphi systems. By: Guest on: 10-12-2011
- By the codes I got It is one of three things. The Module. The crank sensor. The cam sensor. Can the module be purchased at harley? Does module have to be programed or is it just plugged in and start? Any good after market ECMs? By: grizzly08 on: 10-12-2011
- Yes the ECM can be purchased at harley. The new modules come with a computer disk that you use to program the ECM yourself. It is actually a pretty good set up. You can use your own computer to program, and diagnose the ECM. I still would check the cam sensor. The cam sensor going bad is a pretty common problem. By: Guest on: 10-13-2011
- Oh, and usually if the eCM is bad, it will not throw a code. The crank sensor and the cam sensor both use the same 5volt power line, so when one goes bad, it shows the code for both.
By: Guest on: 10-13-2011
- go to the most simple thing first, check the ground for the ignition By: Blackwall1 on: 10-15-2011