Engine light with NO code?
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Joined: Aug 2021
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From: SoCal
Engine light with NO code?
2007 FLHTCU. Stock internals w/ PCIII tuner, high flow intake and Rinehart true duals.
I recently replaced the IAC as the bike would stutter when coming to a stop. Cleaning it several times helped, but never solved the issue.
Replacing it did.
Never touched the idle stop screw as others recommended, although I did buy the 5-pointed bit & show it to the bike as a threat.
Also experienced poor starting on multiple occassions, just replaced the battery and that seems to have helped resolve that issue.
Now the only issue that remains is a CEL that throws NO code.
Without a code, how do I even begin to figure out why the CEL is on?
What good would using a reader/scanner be if there is no code?
I recently replaced the IAC as the bike would stutter when coming to a stop. Cleaning it several times helped, but never solved the issue.
Replacing it did.
Never touched the idle stop screw as others recommended, although I did buy the 5-pointed bit & show it to the bike as a threat.
Also experienced poor starting on multiple occassions, just replaced the battery and that seems to have helped resolve that issue.
Now the only issue that remains is a CEL that throws NO code.
Without a code, how do I even begin to figure out why the CEL is on?
What good would using a reader/scanner be if there is no code?
Tourer
Joined: Feb 2016
Posts: 486
Likes: 155
From: British Columbia
Synchronizing the new IAC to ECU
2007 FLHTCU. Stock internals w/ PCIII tuner, high flow intake and Rinehart true duals.
I recently replaced the IAC as the bike would stutter when coming to a stop. Cleaning it several times helped, but never solved the issue.
Replacing it did.
Never touched the idle stop screw as others recommended, although I did buy the 5-pointed bit & show it to the bike as a threat.
Also experienced poor starting on multiple occassions, just replaced the battery and that seems to have helped resolve that issue.
Now the only issue that remains is a CEL that throws NO code.
Without a code, how do I even begin to figure out why the CEL is on?
What good would using a reader/scanner be if there is no code?
I recently replaced the IAC as the bike would stutter when coming to a stop. Cleaning it several times helped, but never solved the issue.
Replacing it did.
Never touched the idle stop screw as others recommended, although I did buy the 5-pointed bit & show it to the bike as a threat.
Also experienced poor starting on multiple occassions, just replaced the battery and that seems to have helped resolve that issue.
Now the only issue that remains is a CEL that throws NO code.
Without a code, how do I even begin to figure out why the CEL is on?
What good would using a reader/scanner be if there is no code?
Last edited by LenBoyLo; Dec 13, 2021 at 11:55 AM. Reason: Title misspelled.
Thread Starter
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Banned
Joined: Aug 2021
Posts: 4,027
Likes: 6,286
From: SoCal
Thanks to another member, i was alerted to the method that I was checking for codes. The run switch must ne ON/RUN in order for at least some codes to appear.
I reran the test and found code P0117.
The next step was to measure for 5VDC at the plug to the temp sensor.
I had 5V, so the next thing I did was to replace the sensor w/ the original one.
Bike fired up and the CEL is GONE!
I replaced the temp sensor earlier this year to help w/ a cold start issue.
Turns out that my battery was beginning to fail and now the replacement temp sensor has failed.
New battery and old sensor seemed to be the right combination to resolve this issue.
I reran the test and found code P0117.
The next step was to measure for 5VDC at the plug to the temp sensor.
I had 5V, so the next thing I did was to replace the sensor w/ the original one.
Bike fired up and the CEL is GONE!
I replaced the temp sensor earlier this year to help w/ a cold start issue.
Turns out that my battery was beginning to fail and now the replacement temp sensor has failed.
New battery and old sensor seemed to be the right combination to resolve this issue.
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