Author Topic: V85TT Idle Adjustment  (Read 422 times)

Offline Stuarto72

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V85TT Idle Adjustment
« on: November 29, 2022, 01:49:41 PM »
I have a 2021 V85TT, purchased new, now with just under 5000 miles. The bike idles at about 1100-1150 RPM which seems a little too high.  Curious if the is a simple idle adjustment?

Thanks,    Stuart Ostroff
Dunstall Norton (1969)
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Online Huzo

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Re: V85TT Idle Adjustment
« Reply #1 on: November 29, 2022, 02:09:59 PM »
There are more skilled commentators than me on this topic, but your idle speed is right.
It is coded into the ECU is not adjusted by the owner in anything resembling the time honoured way.
Ignoring the initial cold (freezing) start, does it idle at about this speed ?
https://youtu.be/Li8qvFVuAJ8
That idle (once settled), is 1100-1150

Offline guzzisteve

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Re: V85TT Idle Adjustment
« Reply #2 on: November 29, 2022, 03:08:49 PM »
If it's never been serviced it's time. Otherwise you got another !Kmi. That is where it idles not like older twins all preset in ECU map.
Might need valve adjust and TPS reset, you'll need software. Plug it in & look for issues.

If you see a stop screw on throttle body DO NOT mess w/it or you'll need a new one & ECU(integrated together).
« Last Edit: November 29, 2022, 03:13:03 PM by guzzisteve »
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Offline mondtster

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Re: V85TT Idle Adjustment
« Reply #3 on: November 29, 2022, 10:14:13 PM »
There is no idle adjustment unless you edit the ECU. Even then, it is somewhat of a moving target depending on conditions. The idle speed may seem a little fast to you but it's about as low as is really practical.

Wildgoose Chase Moto Guzzi

Re: V85TT Idle Adjustment
« Reply #3 on: November 29, 2022, 10:14:13 PM »

Offline Speciality

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Re: V85TT Idle Adjustment
« Reply #4 on: November 30, 2022, 09:52:13 AM »
My V7 850 Special has always idled at a higher than expected speed, in accordance with the manual. I believe it’s because, relative to the older bikes, the flywheel is a lot lighter, which is why the motor spins up so quickly. The downside is the loss of the count every beat idle speed of old…Just the way it is.

Offline GuzziOrDeath

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Re: V85TT Idle Adjustment
« Reply #5 on: November 30, 2022, 07:52:26 PM »


1100-1150 is normal. There is no way to adjust the idle by the user.


Steve, there's no throttle stop. It has an ETB (electronic throttle body).





Online Clifton

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Re: V85TT Idle Adjustment
« Reply #6 on: November 30, 2022, 09:30:10 PM »
I have a 2021 V85TT, purchased new, now with just under 5000 miles. The bike idles at about 1100-1150 RPM which seems a little too high....

I believe that's actually a little low, it should idle around 1,300.
21 V85TT
14 California Custom
21 Tenere' 700
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93 R100R

Offline tris

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Re: V85TT Idle Adjustment
« Reply #7 on: December 01, 2022, 02:31:28 AM »
.....If you see a stop screw on throttle body DO NOT mess w/it or you'll need a new one & ECU(integrated together).

THIS

If you doubt the validity of this statement, google "scared screw" with regard to the CARC bikes

Whilst not exactly the same it will help demonstrates the amount of self-inflicted pain that can be caused of you adjust and screws that you should not be adjusting these days!

My Breva 1100 came with a fiddled with sacred screw before I knew it was a problem, and while I improved things, I never got it back to where it should have been

I assume the V85 is a single TB?
If so I suggest that you read this https://manuals.wotmeworry.org.uk/useful%20info/magneti_marelli_miu_g3_information_14854.pdf


Apparently gibberish - please ignore :embarrassed:
« Last Edit: December 01, 2022, 10:07:20 AM by tris »
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Offline GuzziOrDeath

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Re: V85TT Idle Adjustment
« Reply #8 on: December 01, 2022, 05:10:59 AM »

The V85 has the 52SMGP1 electronic throttle body, NOT the MIUG3. THERE IS NO THROTTLE STOP. The ECU uses PWM to control the throttle plate/butterfly.

It's the same as the California 1400 and a whole bunch of Aprilia's.





Offline Cam3512

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Re: V85TT Idle Adjustment
« Reply #9 on: December 01, 2022, 01:19:42 PM »
Normal. 
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