I'm getting an odd check engine light on startup. (2007 FXD Super Glide)

When I turn the ignition on and then hit the Run switch, the check engine light comes on for a second or two then turns off, just like it always has.

But then, after a few seconds, it comes BACK on and stays on for about five seconds, and then turns off again. It's never done that before, and I bought this bike new.

It stays off after that and the engine runs just fine.

Any ideas what's going on?

BTW... I called the dealer, and they want to keep the bike all fricken day just to check the code. He says it sounds like a "historic" code, whatever that is. I told him, well I can take my car in and they'll tell me in five minutes what the code is. Why the heck to you have to take all day? Sounds like B.S.

Anyway, any ideas on this would be helpful...

 

Do a search here on how to clear the codes. I know I've seen it here somewhere. If you clear it and it comes back you know there's a problem. If it doesn't come back you're probably ok.

 

From: HD Shop Talk...


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 should 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.

On models not equipped with a tachometer "No Rsp" will appear when the tachometer identifier is selected.

"No Rsp" will also appear if the run/off switch is in the off position when doing this procedure.

Also if the code set is a historic code (not a constant light) after 50 start and run cycles of at least 30 seconds each in duration, the light will extinguish itself as long as the error hasn't occurred again.
If it were a current code, the light would remain lit while running.

 

Wow! That looks complicated.... but thank you. I will give it a shot.

By the way, it seemed to start doing it about the time I switched my spark plug wires from Magnum Sterling Chromites to Accel.

I put the Chromites back on it, but the light issue remained.

Is it possible for spark plug wires to cause this?

 

try disconnecting a battery cable too... check relay

 

Yes....put the stock plug wires back on the bike.
Different resistances can cause your bike to throw codes. This is one of those things that is best from the factory. Changing plug wires in not going to give you better spark or improve anything....only causes issues like this.
Plug wires....leave 'em stock.

 

"Also if the code set is a historic code (not a constant light) after 50 start and run cycles of at least 30 seconds each in duration, the light will extinguish itself as long as the error hasn't occurred again.
If it were a current code, the light would remain lit while running."

Sounds like your new plug wires threw the code but light will still come on with stock wires for 50 starts till it clears.

 

I went and bought some Screamin' Eagle wires and stuck 'em on there... we'll see.

 

let us know how you go and good luck.