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2007 CVO Ultra Classic Stalling Problem

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Harleyman5600:
I previously posted this question as a reply to an earlier thread that seemed to be on-topic, but got no replies and am now unable to locate the older thread, so here goes:

I have a 2007 CVO Ultra Classic.  It has the 110 motor with the 6-speed.  It has a persistent and chronic stalling problem whenever it's been run long enough to be fully warmed up (say up to an hour without stopping). It'll be running great as it always seems to, then I'll come up to a stop sign or traffic light and as soon as it drops to idle, it stalls (not every time, but sooner or later almost every time I go for a ride).  Start it back up, it'll idle fine and run fine until the next stop sign, and then stall again as soon as it drops to idle again (again, not every time). Sometimes instead of stalling it'll drop to a very low idle and chug-chug-chug like it wants to stall, and a blip of the throttle will bring it back up to normal (until the next stop sign). I bought the bike from the second owner, who claims he did nothing to it but ride it.  The bike is mostly stock, the only mechanical changes being 4" pullback bars and Rinehart True Dual pipes.  It runs like a raped ape generally, so I'm presuming a download was done when the pipes were installed, but I have no way to know for sure.  When I realized the stalling problem wasn't going away, I took it to the dealership where it was originally purchased.  They kept it for a week but claimed they could not reproduce the problem, diagnosed it as a defective voltage regulator and billed me $400 to replace it.  And of course it made not the slightest difference.  They also claimed it does not "throw a code" so I'm trying to figure out what kind of problem would be so consistent but not throw a code?  I took to a different dealership, who kept it for a week and returned it to me without even addressing the problem.  The first independent shop I took it to did the same.  I took it to a second independent mechanic, who finally took me seriously and started to work the issue.  He did a lot of testing, and found and fixed numerous air and vacuum leaks, replacing several gaskets and o-rings in the process.  He pronounced the bike leak-free.  It still stalls.  Next time in he replaced the spark plugs and plug wires, and the fuel injectors and IAC.  It still stalls.  I took a celphone video of the bike stalling over and over, on a day I got back from a ride and it stalled in my garage when I pulled in.  The video will show it stalled, I restarted it, it stalled again, and it repeated this over a dozen times as I restarted it over and over.  Finally, I restarted it for the umpteenth time and suddenly it ran and idled fine.  But I have no way to understand why, either why it stalls or why it sometimes doesn't.

Has anyone ever seen this on any other bike with this motor?  2007 was the first year of the 110 motor with 6-speed trans.  Could this be a "first-year-teething" problem?  It's very frustrating as you can imagine.  On solo rides not so much, but when riding with any other bikes I find myself feathering the throttle whenever stopped, to avoid it possibly stalling and the subsequent embarrassment of it.  I shouldn't have to do that!  What can I do?  Can anyone think of a possible solution I haven't already tried?  Thanks!

scottt:
I also owned a 07 CVO ultra. Yes, it was the first year for the 110. While I never experienced your issue I did have some as did other 07 110 owners.

The 07 and 08 110 were known for running extremely hot. My fix was to install a SE tuner, adding more fuel to cool the motor. Could someone have installed an aftermarket tuner that is now acting up?

The other issue was the crankshaft. They were known for being out of spec. I heard of crank sensors failing as well.

I'd have these areas checked, starting with the tuner. Pray it's not the crankshaft.

Finally sold my bike. While I wish you all the best luck, the 2007 CVO Ultra was my greatest problem bike ever.

Sent from my SM-J327T using Tapatalk

Joel:
Stalling and no codes can be a challenge.
Start with the basics, clean both battery cable ends and where the neg cable grounds on the frame and if there is more than 1 grounding wire follow it and remove and clean.
Loss of battery power can cause no code setting, though a code for loss of power can be set.
Check each fuse connection, do to age there could be some corrosion in the box, so pull each to inspect.
Disconnect the ECM to inspect the pins, sometimes just unplugging connectors can help a connection problem.
Crankshaft sensor can cause a stall, they are located by the oil filter and maybe over the years it may have been bumped enough times that it is cracked and than temp plays a roll in becoming an open circuit causing a stall.

Fired00d:

--- Quote from: Harleyman5600 on December 27, 2019, 02:58:47 PM ---I previously posted this question as a reply to an earlier thread that seemed to be on-topic, but got no replies and am now unable to locate the older thread, so here goes:

...

--- End quote ---
Not sure where/how you could have posted this previously with this post being your first. Did you have another username/account (maybe that's why you can't find it)? Perhaps you posted it on another forum or maybe when you hit the post button for some reason it didn't get posted... you just joined us a few days ago. :nixweiss:

 :pumpkin:
Ride Safe,
Fired00d
 :fireman:

ultrafxr:
Idle air control could be the problem. I too had intermittent stalling when I had my ‘07 but it was an intake leak.


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