Buelltooth worth it ?

[Cooter]

I know that the coil is grounded through the wires and ECM ...

http://buellmods.com/content/downloads/manuals/2008_xb_electrical_diagnostics_manual.pdf

 

[trap666]

The bike starts but doesn't keep his idle for more than a few secs then stalls. I did the TPS reset procedure a few times but it didn't change anything.
I will get new plugs and check if I have sparks on both plugs.

 

[trap666]

Hi Guys,

Finally got my Buelltooth in the mail this week and back working on this bike.

I did change the plugs, these were completely black. With new plugs in the bike doesn't keep the idle until warm.

CEL isn't on. The 2 previous codes were just stored in the ECM.

I did install the Buelltooth and it tells me that the AFV is at 62.8 :-s

Any idea why ?

 

[34nineteen]

Hi Guys,

Finally got my Buelltooth in the mail this week and back working on this bike.

I did change the plugs, these were completely black. With new plugs in the bike doesn't keep the idle until warm.

CEL isn't on. The 2 previous codes were just stored in the ECM.

I did install the Buelltooth and it tells me that the AFV is at 62.8 :-s

Any idea why ?

Do you have the idle speed set too low?

An AFV that low indicates the ECM is removing (a lot of) fuel because it is sensing an overly rich mixture (and the black plugs called that out too). Have you tried to reset the AFV and watched to see if it returns back to 62?

 

[Cooter]

Jeebus. 62 is the lowest I've ever seen or even heard of. Re-set AFV to 100. Then, under O2 settings, change the AFV limits to 90/110 so it runs long enough for you to diagnose whats wrong or ride it to someone who's a mechanic. Hint! it's not the ECM and no, you don't need a 'new program':sleeping:



No. No you don't.

 

[trap666]

Sorry for the delay guys. Cooter and 34nineteen thanks for your help.

Bike wasn't insured until this week so I couldn't do test rides.

I did a 60 miles ride yesterday. Bike wasn't keeping idle when cold due to the low AFV but it drove well once warm. No issue to report at all.
AFV was a 72 when I got back home.

So I did reset the AFV to 100 today before going for another ride. Idle when cold was great and the bike did run well on this 40 miles ride.

But AFV was back at 76 when I got home. Before I definitely change the AFV limits to 90/110 any idea what could be the issue ? The bike runs great so I am wondering :-s

 

[Barrett]

Sir: AFV is a program value. It stands for "adaptive fuel value". It is a factor that the ECM develops to use as a benchmark when the system changes from closed loop to open loop. Something in the vicinity of 3-4% of base value 100 is normal and acceptable. Your value is extraordinarily low...indicating that the ECM is cutting the pulse-width of both injectors....normally referred to as "leaning out" or "cutting fuel"....because it is seeing an overly-rich condition. Best I can explain it to you.

Potential causes:
One or both injector signal feed wires sporadically grounding to short
Failing/leaking injectors
Faulty O2 sensor
Faulty ECM ground
Failed fuel pump regulator

 

[Cooter]

Your ECM is seeing a rich condition. Maybe its mechanical (leaky injectors/ clogged air filter), maybe its a sensor malfunction (O2/ temp).

You can see those values in ECMDroid Live Data to see if they are normal before you throw parts at it. Or just throw parts at it.

Remember these are old bikes now. Going through the basics before getting muddled up in ECM programming will solve your issues 98% of the time.

 

[trap666]

Thanks guys.

I think I have the Live Data "by default"

I did take a screenshot yesterday while doing my test ride.

IAT Corr at 98%
WUE at 100.1%
TPD at 4.2
AFV at 76
O2 at 0.72V

These were with the engine running at idle.

Which particular values should I be looking for in the ECMdroid live data in my case ?

Thanks again

 

[trap666]

Thanks guys.

I think I have the Live Data "by default"

I did take a screenshot yesterday while doing my test ride.

IAT Corr at 98%
WUE at 100.1%
TPD at 4.2
AFV at 76
O2 at 0.72V

These were with the engine running at idle.

Which particular values should I be looking for in the ECMdroid live data in my case ?

Thanks again

And thinking about it when I got the bike I did replace the spark plugs because the bike didn't want to start properly and plugs were completely black. So I guess the O2 sensor read properly and the bike is actually running rich. Air filter isn't clogged or dirty. This would point me in the direction of the injectors ? do you agree ?

 

[Trevor]

i dont know if it would make much of a difference but the TPD should be about 5 . You could try another tps reset, set the TPD, then adjust the rpm by the idle cable.
Injectors might not be to hard to pull ,check and clean.
I couldnt replace the top seals on the injectors cause they are obsolete, But they didnt look damaged.

 

[Cooter]

He has some diagnosing to do before anyone here can throw anything more than a total guess his way:/

His TPD is 'about 5' already and there is no idle RPM or cable adjustment. It's a ECM controlled stepper motor (IAC). Performing a TPS re-set simply recalibrates the correction value and doing it multiple times does as much as clearing codes does. Nothing.

The "injector top seals" are the same for all XB's and since they are just o-rings, you can get them anywhere. I buy them in bulk for about .03¢ each for Viton.

 

[ThaRickestRick]

I just bought a $30 track phone (didnt have any android devices that would work with it) and didnt put time on it since it still works just fine off the wi-fi for its intended purpose. Still data logs etc when riding. I found it to be worth it. Any newer android device with the google play store app will work with it

 

[motoguy]

Back to the original question...is the Buelltooth option "as good as any" for doing work on my recently purchase Uly? Or is there another option that may be preferable?

 

[Cooter]

It's effectively just a universal Bluetooth module and a 5VDC voltage regulator soldered together.

Could you get one from an off-shore source for slightly less? Maybe. Could you even make one yourself? Probably.

Is it worth penny pinching a $48 quality part from a well known company that also gives you access to a whole encyclopedia of fuel maps for free?


#rhetorical

 

[motoguy]

It's effectively just a universal Bluetooth module and a 5VDC voltage regulator soldered together.

Could you get one from an off-shore source for slightly less? Maybe. Could you even make one yourself? Probably.

Is it worth penny pinching a $48 quality part from a well known company that also gives you access to a whole encyclopedia of fuel maps for free?


#rhetorical

I wasn't aware of the maps issue. Yes, I could definitely make one (for about $8 in parts plus shipping based on when I last checked), but...would it? I have enough other projects. With support for Buells getting slimmer, I'll toss some $ their way. In fact, I already have...ordered it right before posting this.

 

[Cooter]

Well, I know how to make beer pretty cheap. Should I?:very_drunk: Happy Oktoberfest


I don't think Rev-Mo is hanging out with Besos on his spaceship quite yet by selling a $48 tool for a long dead motorcycle brand but hey, I'm sure they appreciate your support.

 

[motoguy]

I don't think Rev-Mo is hanging out with Besos on his spaceship quite yet by selling a $48 tool for a long dead motorcycle brand but hey, I'm sure they appreciate your support.

Having sold my last bike in 2013 and only recently re-entered, I have a weird timewarp going on in my head. I remember when the Buells were brand new, and I was infatuated with the Uly at introduction. It's crazy to think the whole company has been dead for 13 years now.

Then again, I guess this is just "welcome to getting old". My Roadcrafter is 20 years old...

 

[lancruza]

Did it stop running on a Tuesday? Maybe it's allergic to tacos?

This is CLASSIC!!!

 

[Cooter]

Glad I can entertain at least one of ya:black_eyed: