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E5 V85TT Running issues

GerryAZ

Cruisin' Guzzisti
GT Contributor
Joined
May 24, 2021
Messages
134
Location
Phoenix, AZ
Below is a recap of a running issue I had with my bike accompanied with a CEL.

I could not find any wiring or vacuum hose issues so I tried clearing codes. I was able to read and clear error codes using the attached setup with a small Windows 10 computer that I always carry on out-of-town trips. The adapter cable and OBDII Bluetooth unit will be easy to carry with the computer.

Unfortunately the engine runs rough and backfires when started after clearing the codes and the code(s) along with CEL and red dash display return after maybe 30 seconds of rough running. Therefore, I will be calling my local dealer this week to schedule warranty repair. I am lucky that it happened in my driveway and not while riding off road or traveling.

Edited to add: I just updated the firmware in the OBDLink MX unit and OBDwiz software. I am now able to read freeze frame data, PID information (which appears to be real time, but hard to keep engine running long enough to be sure), and save complete diagnostics reports as well as reading/clearing the error codes. I purchased the OBDLink MX in 2013 and had never updated the firmware in the Bluetooth device or updated the Windows software. The MX unit is discontinued, but the present version is MX+ available from www.scantool.net (they also offer their LX model, but I have no experience with it).
 

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GerryAZ

Cruisin' Guzzisti
GT Contributor
Joined
May 24, 2021
Messages
134
Location
Phoenix, AZ
Time for an update: After studying the real time data that I could read with my Bluetooth OBDII adapter, I found that all of the sensors seemed to be working normally. The manifold absolute pressure was just a little less than atmospheric pressure so I took another careful look for air leaks. There were no disconnected or broken hoses, but with a bright LED flashlight (in subdued garage lighting) I noticed the rubber manifold was partially disconnected from the throttle body. At that point I decided to repair it myself rather than arranging transportation to the dealer. The two photos below show before and after. I marked the throttle body with a red Sharpie after getting the manifold properly connected so I can see at a glance if it starts to move again. The bike ran fine after getting it back together and clearing the codes one last time. I don't want to hijack this thread too much now, but could post photos and description of disassembly/reassembly that I found necessary to get the manifold reattached. Thank you to those who pointed out that the new bikes are OBDII compatible.

MG Throttle Body 1 MG Throttle Body 2
 

GerryAZ

Cruisin' Guzzisti
GT Contributor
Joined
May 24, 2021
Messages
134
Location
Phoenix, AZ
This thread was split from the UpMap thread. The error codes were P1600 and P1602. I am still waiting for the UpMap unit I ordered and will report back in that thread later. More information about the bike going into limp mode and equipment needed to read diagnostic trouble codes can be found in that thread. Also, there is a new thread started by Todd to discuss the OBDII interface for the newer bikes: OBDII Port Reader - E4/5 Red Diag Plug Guzzis.
 

GerryAZ

Cruisin' Guzzisti
GT Contributor
Joined
May 24, 2021
Messages
134
Location
Phoenix, AZ
It was definitely the issue. I have ridden at least 300 miles since putting it back together. I also recorded real time data while idling for my future reference. FWIW the local dealer told me they have only had a few cases of bikes going into limp mode and those were all related to 12V battery issues. The throttle body has a groove and the rubber manifold has a ridge that fits in that groove. I am suspicious that the manifold was never properly seated in the groove and it eventually came loose.
 

jwtucker

V11 Sport 4 Life
Joined
Aug 13, 2011
Messages
218
Location
Philadelephia
I'd still like to get to the bottom of my occasional misfire errors, but I've been giving some love and attention to the poor neglected Ducati as of late, so I'll probably get back to that later. I've heard rumblings that there may have been updated OEM maps released recently (not positive), so if so, I might experiment with re-flashing that, before reloading the aftermarket (UpMap) map. I still want to experiment with OEM map + V-twin Boost as well, but need to find the time to fiddle with it.

__Jason
 

GTM®

Administrator
Staff member
GT di Razza Pura
Joined
Jul 1, 2009
Messages
12,855
Location
Malibu
I'd still like to get to the bottom of my occasional misfire errors, but I've been giving some love and attention to the poor neglected Ducati as of late, so I'll probably get back to that later. I've heard rumblings that there may have been updated OEM maps released recently (not positive), so if so, I might experiment with re-flashing that, before reloading the aftermarket (UpMap) map. I still want to experiment with OEM map + V-twin Boost as well, but need to find the time to fiddle with it.
Keep us updated if you do. I’ll warn you against “sensor offset” foolers as they were tech abandoned by Dynojet in the late 90s. I know they fit into the ‘everybody uses it’ category, however the newer ECUs are even more sensitive to these band aid devices.
 

jwtucker

V11 Sport 4 Life
Joined
Aug 13, 2011
Messages
218
Location
Philadelephia
Yep, understood. I don’t particularly like such devices, but I got one to have as a “Plan B” in case remapping became problematic. Despite various positive reviews, their promise still seems too good to be true with such a simplistic device.

__Jason
 

john zibell

Moderator
Staff member
GT di Razza Pura
Joined
Oct 28, 2008
Messages
8,683
Location
Huntsville, AL
Yep, understood. I don’t particularly like such devices, but I got one to have as a “Plan B” in case remapping became problematic. Despite various positive reviews, their promise still seems too good to be true with such a simplistic device.

__Jason


If too good to be true, it isn't true.
 

scottmastrocinque

GT Godfather!
GT di Razza Pura
Joined
Jun 26, 2011
Messages
2,508
Location
Findlay, Ohio
I have one of those spoofers for my Stelvio from the Booster Plug guys in Denmark.

Used it for 2 weeks, very disappointed. It didn’t do what they claimed. It simply sends a fake air temperature to the ECU to change the fueling being delivered. Interesting idea but mediocre performance at best.

Got real and bought the PC-V and AT300 setup from Todd.

Bike is best running Stelvio in the world and never looked back for 10 years now.
 
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