2014 Street Glide Rough Idle and Stalling.

Dragon88 · Jul 16, 2020

Hi Guys, 14 SG was running perfectly, quiet, no issues. Stopped at a set of lights and suddenly rough idle, clattering noise from primary case, stalling. Hunts badly like a diesel engine and will rev between 1200 to below 900 and eventually stall. On start up will rev to 1800-2000rpm.

Checked so far.

It has fresh fuel
New Battery, tight terminals
New TMAP sensor
New CHT sensor
Fuel filter and all fuel lines checked inc inside tank
No frayed or damaged wires, all plugs checked
New inlet manifold seals
Spark plug wires and coil test within range
Crank Position sensor clean and plug, wires etc good.
New Spark Plugs
No vacuum leaks (rubber plug is good)
Cylinder temps measured and ok.
EITMS disabled.
Engine Compression checks within range.

Initially NO CODES were thrown. After installing new CHT Sensor it throws P0505, loss of idle speed control.

Any suggestions as to what should be checked/tested/replaced next would be very welcome. My sanity thanks you in advance.

Pred8er · Jul 16, 2020

One of the motorcycle Doctors will be along shortly, but...

Anytime someone says they have a "clattering noise" coming from their primary, it usually isn't a good thing. Have you opened up the primary to check what's going on inside to cause the noise?

Dragon88 · Jul 16, 2020

Thanks for the reply. Yes, there are no isssues. Compensator is shimmed, chain is properly tensioned.

SCHMIDTY · Jul 16, 2020

I would clean the IAC pintle and port with carb or brake cleaner spray while cycling the ignition switch on and off until the cleaner runs clear.
Next I would inspect the TBW connection inside the throttle grip housing. The TBW connectors are very fragile and break causing poor contact at the pins.
Then I would unplug the maxi-fuse for a few minutes to reset the system, to reboot the ECM.
I'm unclear about that CHT sensor and what it does.

Dragon88 · Jul 16, 2020

Thanks for the reply. Later models dont have IAC they have TMAP sensors and it has been changed. TPS is a possibility but it runs rough only after it reached operating temperature normally the sign of a faulty CHT ( cylinder head temp) sensor which has been changed. Very frustrating!

SCHMIDTY · Jul 17, 2020

Ahh, CHT. Same as the ETS (engine temp sensor). Hope it's not the TPS, that's the whole damn induction module in 2014 !

Dragon88 · Jul 17, 2020

Yeah I hope so too Bro!

SCHMIDTY · Jul 18, 2020

Did ya happen to check the TBW sensor in the twist grip yet ? That could be the P0505 code.

Dragon88 · Jul 20, 2020

Will do that today mate. I will swap out the CP sensor also. They can go bad without throwing a code. Could be coil issues also so I will test that today also.

Dragon88 · Jul 22, 2020

Turned out to be a bad primary cam chain tensioner.

1/2 Ton · Jul 22, 2020

Thanks for posting the results!

Way to many just leave us in the dark. Thank goodness is was something cheap. Well cheaper than a Induction module anyways...

SCHMIDTY · Jul 22, 2020

Cam chain tensioner or primary chain tensioner ? Right or left side of the bike ?

Dragon88 · Jul 23, 2020

As mentioned Bro, cam chain tensioner.

SCHMIDTY · Jul 23, 2020

The reason I asked was because noise from the primary side and then the OP stated primary cam tensioner.
It's unusual for a hydraulic tensioner to fail so I was just curious if it was actually the cam chain tensioner.
Now I'm wondering what caused the noise from the primary side ?

2014 Street Glide Rough Idle and Stalling.

Top Contributors this Month

Recommended Communities