Road King engine shutting down while driving
Thread Starter
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Stage IV
Joined: Oct 2020
Posts: 4
Likes: 1
From: Costa Rica
Road King engine shutting down while driving
Hi All,
I new to the forum and new to the HD world, I brought recently my first Harley (about a year ago), a Road King 2007 Police, sadly with this pandemic (no group rides) and some unpleasant trips to the mechanic, i haven't been able to enjoy the experience, but I'm still have hope to be able to do so.
Currently I'm having a problem with my road king, while driving it shutdown the engine and if I let it sit for about 1 hour, it starts right up with no problems, it has only happened to me 2 times I'm about 1 month, this is what I was able to notice so far.
Things that I have replace on my bike
Modifications
I really appreciate any guidance you guys can give it will be pretty much appreciated
Thanks,
I new to the forum and new to the HD world, I brought recently my first Harley (about a year ago), a Road King 2007 Police, sadly with this pandemic (no group rides) and some unpleasant trips to the mechanic, i haven't been able to enjoy the experience, but I'm still have hope to be able to do so.
Currently I'm having a problem with my road king, while driving it shutdown the engine and if I let it sit for about 1 hour, it starts right up with no problems, it has only happened to me 2 times I'm about 1 month, this is what I was able to notice so far.
- Happened while coming to stop,, idle runs rough, throttle does not respond, engine shutdown.
- NO check engine light (both cases, also no codes on the diagnostics screen)
- At low speeds and with constant throttle, I can feel a small engine hesitation (I feel like nodding my head), goes away with more speed + throttle (this happens always, its not limited to the shutdown event)
- After it shutdown, I let it sit for about an hour, and starts right back up with no problems
- I did noticed that the 2 it has happened, I'm less than half tank of gas
Things that I have replace on my bike
- Stator
- Alternator Flywheel
- Fuel Pump
- Fuel Filter
- Engine Temperature Sensor (+ connector)
Modifications
- Only a High Flow K&N Filter (stock replacement, nothing fancy like an air cleaner or something like that), aside from this filter its pretty much stuck.
I really appreciate any guidance you guys can give it will be pretty much appreciated
Thanks,
Last edited by SlaveZero; Oct 20, 2020 at 03:12 PM.
Seasoned HDF Member
Joined: Mar 2010
Posts: 19,980
Likes: 6,108
From: Florida
You let it **** for an hour? Sounds like one of my visits to la casa mierda!
Anyway, I was gonna say fuel, but I see you replaced the fuel filter.
Next time it happens, try loosening the gas cap a little. Had a Goldwing that did the same thing stranded me 4 times; last time on the Belt Parkway in Brooklyn, Honda replaced practically everything under warranty.no luck. I finally found the issue by accident...a clogged fuel cap vent. Replaced the cap with a rag & I was good to go.
BTW; where do you live in CR? Is there good Harley service near you; dealerships,Indys,etc?
Anyway, I was gonna say fuel, but I see you replaced the fuel filter.
Next time it happens, try loosening the gas cap a little. Had a Goldwing that did the same thing stranded me 4 times; last time on the Belt Parkway in Brooklyn, Honda replaced practically everything under warranty.no luck. I finally found the issue by accident...a clogged fuel cap vent. Replaced the cap with a rag & I was good to go.
BTW; where do you live in CR? Is there good Harley service near you; dealerships,Indys,etc?
Thread Starter
|
Stage IV
Joined: Oct 2020
Posts: 4
Likes: 1
From: Costa Rica
You let it **** for an hour? Sounds like one of my visits to la casa mierda!
Anyway, I was gonna say fuel, but I see you replaced the fuel filter.
Next time it happens, try loosening the gas cap a little. Had a Goldwing that did the same thing stranded me 4 times; last time on the Belt Parkway in Brooklyn, Honda replaced practically everything under warranty.no luck. I finally found the issue by accident...a clogged fuel cap vent. Replaced the cap with a rag & I was good to go.
BTW; where do you live in CR? Is there good Harley service near you; dealerships,Indys,etc?
Anyway, I was gonna say fuel, but I see you replaced the fuel filter.
Next time it happens, try loosening the gas cap a little. Had a Goldwing that did the same thing stranded me 4 times; last time on the Belt Parkway in Brooklyn, Honda replaced practically everything under warranty.no luck. I finally found the issue by accident...a clogged fuel cap vent. Replaced the cap with a rag & I was good to go.
BTW; where do you live in CR? Is there good Harley service near you; dealerships,Indys,etc?
Sure ill try that, about the Harley service, officially its only one (the rest are home garage mechanics), which is quite expensive, so want to have at least an idea if maybe there are things that a DIY can do, or at least things that i can test, to have a better understanding of the issue.
Stellar HDF Member
Joined: Jun 2007
Posts: 2,928
Likes: 117
From: Ashby, Ma
Next time it happens, disconnect the "Quick Connect" hose that is the feed from your gas tank to the throttle body. It's just above the horn on the left side (shift side) of the bike. It's a small spring loaded connecter and sometimes they fail and will cut out like that. Just disconnect it and then reconned it and try to start it.
Last edited by oldhippie; Oct 20, 2020 at 03:51 PM. Reason: Miss spelled
Stellar HDF Member
Joined: Mar 2006
Posts: 2,395
Likes: 153
From: Utah
I had the same problem with an '06 Nightrain. If I took it to a gas station and put fresh, cold fuel in it all was well. It always ran when the bike wasn't in hot weather. The bike had a TMax ECM on it... and so when it happened again in FL I went to their Bikeweek booth and they put a new ECM on it for a big discount... and that fixed it. You didn't mention if you had an ECM or how many miles but electrical is the worst kind of fault on a Harley. Some bikes had a fuel hose that rubbed on the tank until it had a hole in the hose. When the fuel pump and filter were replaced did the hoses get replaced? Did the fuel pressure get tested to check the regulator? Beyond that I would check the coils and the grounds in the wiring... they are easy to check with a cheap multi-meter... and a lot of patience.
Seasoned HDF Member
Joined: Nov 2018
Posts: 10,833
Likes: 6,485
From: Canada Flats
I agree with cleaning the iac , turn you ignition on/off and you will see it cycle open/close , clean it out that way , while your at it , clean the butterfly and seat as well .
Another thing that comes to mind , is the crank position sensor . The connector is located under the frame below the oil filter . sometimes oil , crud or corrosion can get into it and cause issues . Unplug it and spray it down with some electrical contact cleaner . Check for damaged wires , pins ect . Also pull the sensor out and wipe it off , if it's faulty , cleaning it won't help , and sometimes they are known to go bad without throwing a code .
Another thing that comes to mind , is the crank position sensor . The connector is located under the frame below the oil filter . sometimes oil , crud or corrosion can get into it and cause issues . Unplug it and spray it down with some electrical contact cleaner . Check for damaged wires , pins ect . Also pull the sensor out and wipe it off , if it's faulty , cleaning it won't help , and sometimes they are known to go bad without throwing a code .
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Stage IV
Joined: Oct 2020
Posts: 4
Likes: 1
From: Costa Rica
Thanks all for all the tips, just cleaned the idle control and throttle body, did not had much effect on my thready idle, but i was raining today so I couldn't take it for a spin
Also replaced my crankshaft sensor (since reading all the symptoms of a faulty one are very very similar to what's happening to me.
Will update you guys as soon as I have some results back.
Also replaced my crankshaft sensor (since reading all the symptoms of a faulty one are very very similar to what's happening to me.
Will update you guys as soon as I have some results back.
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Seasoned HDF Member
Joined: Dec 2005
Posts: 19,900
Likes: 8,007
From: poway
The quick connect is a common issue, so is a weak crank sensor. You can try holding up on the quick connect when the bike stops. Crank sensors are of reluctance type that have a magnet to generate the crank timing pulses. When the magnet gets weak, it can get weaker when hot. Motor will quit and not restart until cool. I would imagine a bad ECM could also cause it but do the cheap stuff first. One thing to do is listen for the fuel pump. When the bike dies, does cycling the ignition make the fuel pump come on? If not ECM or System relay. On first ignition, the engine light should come on and go out. If not it could be the ECM. During initial ignition on the fuel pump should come on, it will stop after a few seconds. On cranking should you hear the fuel pump run a few seconds after cranking stops. If not then it it likely the crank sensor. It's alway good to check fuel pressure also.
Thread Starter
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Stage IV
Joined: Oct 2020
Posts: 4
Likes: 1
From: Costa Rica
The quick connect is a common issue, so is a weak crank sensor. You can try holding up on the quick connect when the bike stops. Crank sensors are of reluctance type that have a magnet to generate the crank timing pulses. When the magnet gets weak, it can get weaker when hot. Motor will quit and not restart until cool. I would imagine a bad ECM could also cause it but do the cheap stuff first. One thing to do is listen for the fuel pump. When the bike dies, does cycling the ignition make the fuel pump come on? If not ECM or System relay. On first ignition, the engine light should come on and go out. If not it could be the ECM. During initial ignition on the fuel pump should come on, it will stop after a few seconds. On cranking should you hear the fuel pump run a few seconds after cranking stops. If not then it it likely the crank sensor. It's alway good to check fuel pressure also.
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