• Hi everyone,

    As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.

    When he passed, I worked with his kids to gather the necessary credentials to keep this site running. Since then (and for however long they worked with Coffee), Woodschick and Dirtdame have been maintaining the site and covering the costs. Without their hard work and financial support, CafeHusky would have been lost.

    Over the past couple of weeks, I’ve been working to migrate the site to a free cloud compute instance so that Woodschick and Dirtdame no longer have to fund it. At the same time, I’ve updated the site to a current version of XenForo (the discussion software it runs on). The previous version was outdated and no longer supported.

    Unfortunately, the new software version doesn’t support importing the old site’s styles, so for now, you’ll see the XenForo default style. This may change over time.

    Coffee didn’t document the work he did on the site, so I’ve been digging through the old setup to understand how everything was running. There may still be things I’ve missed. One known issue is that email functionality is not yet working on the new site, but I hope to resolve this over time.

    Thanks for your patience and support!

TE630 Surging and stumbling off closed part throttle

B

bushwa

Husqvarna
AA Class
Hi all. Here's my issue. Recently picked up a 2011 TE630. It has the JD Jetting tuner installed, but in my opinion, still runs like poo, especially at small throttle openings and on off throttle transitions. It bucks and stumbles when opening the throttle from steady state cruise at low rpm, and on off throttle transitions are very jerky. It still has the O2 sensor in the pipe, but I haven't been able to dig deep enough into the wiring to confirm it's still plugged in or has the power up plug/resistor installed. Otherwise stock. I'll check the JD Jetting settings tonight, but wanted to get some input with respect to tuning or suggested settings. Should I just do the PU plug if it's not already installed and reset to default JD jetting settings? Guess I have some digging to do?
 
How low rpm? They don't like 5th or 6th gear much below 3500 rpm.

You're on the right track - determine if you have PU plug and look up the JD Tuner thread for good settings.


.
 
Assuming it has the PU plug, based on the symptoms, my first blind guess is that your green/blue setting is too high, I run it around 2 and that smoothed me out. My SMS has a TE ECU, so results in that area should be similar. If you want smoother power delivery, I'll trade you my original SMS ECU, it's not as responsive (jerky) as the TE.

If the O2 sensor is still connected (no PU) it's still in closed loop and could be trying to fight your JD by leaning it back out.
 
bushwa said:
It still has the O2 sensor in the pipe, but I haven't been able to dig deep enough into the wiring to confirm it's still plugged in or has the power up plug/resistor installed.
Click to expand...

I would suggest determining the answer to this before anything else you do.
 
Going to check it out this weekend. No better way to get to know a new ride than to remove and replace the tank 3 times within a week. And to clarify, it happens in all gears, and seems to be at it's worse between 3000 and 5000 rpm.
 
For shit/grins throw in a new spark plug and make sure you've got fresh premium fuel. Might also try bypassing the tuner...

good luck


.
 
Alright. The o2 sensor is unplugged. Po has installed and taped up a 2200 ohm resistor across the two terminals on the clip side of the plug. The jd jetting is set with
Green 4.5
Yellow 4.5
Red 5.5
Green/blue 3
Yellow/blue 4
Red/blue 6
Anyone know what the resistor value of the power up plug is supposed to be?
And, how does those settings look for the jd jetting, stock bike.
It stumbles and surges in any gear between 3500 ish and 5000 rpm.
 
With my personal experiences I would try turning red/blue down to 3.5 or 4. I had similar issues where everytime I would go to shift and I would let the clutch out it would stumble so hard I thought it had died and then just take off again. For comparison sake I have an sm model, pu installed, air maze removed, stock exhaust.
 
Take the yellow/blue down to 2 and see what that does.
This setting determines when it switches from low to medium in the range and setting it too high can cause it to stumble on transitions.
 
Thanks all. She's more or less sorted out :-). Desnorkled, added 3 1" holes in the air box lid under the side panel, returned the power surge to JD's recommended set points, with the exception of red was set at 5 instead of 3. No more stumble. No more jerky throttle transitions. Happy!
 
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