Engine stall while braking (clutch switch?) - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
DL1000 from 2002-2012 DL1000 from 2002-2012 (K2-L2)

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post #1 of 16 Old 08-24-2019, 01:52 PM Thread Starter
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Engine stall while braking (clutch switch?)

Hello guys. The patient is DL 1000 2009.
Got a problem with the engine stall while hard braking. All TPS works were done (and the sensors are new), sparks, fuel and air are okay. Hot idle ab. 1300 rpm. Magneto is also new, so I guess there are two possible reasons: either a clutch switch or a tip-over sensor. I'll check the TOS as manual says. In addition, the clutch switch has an issue: it works fine at engine start, but I can't press the lever to hit it while riding (2 fingers on grip won't let it be pressed enough). Checked on stock and 2 aftermarket (levers and switches)- same problem there. So if this is the only possible solution - will the change to banjo with pressure switch help? And can it mess up the ECU while shifting (AFAIK this switch influences the injector and ignition timing)?
Any other ideas would be appreciated. Thanks in advance!
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post #2 of 16 Old 08-24-2019, 02:36 PM
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I had the same problem on my 2009 DL1000. She would start fine but once the motor was hot it would stall on hard braking. Note that the idle speed was also around 1300 (normal).

1- What I did was do a throttle body sync, where you adjust the vacuum on both throttles.Mine were off by a fair margin. There is plenty of info on this site or Vstrom Riders international. Once done you may have to adjust the idle again. Solved my problem.

2- This year I decided to adjust the throttle cables as I felt they were a bit loose. The same problem started again as the revs would briefly fall below 1000 rpm as soon as I took my hand off the throttle, however it turned out that I had tightened the return cable a bit too much, loosed it a bit and all is well.

I have 136000 km on mine and no sensors changed yet

Have a good one

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post #3 of 16 Old 08-24-2019, 03:30 PM Thread Starter
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Hard miles, thanks for the reply.
Throttle bodies synced along with the TPS adjustments - that's the first I've done (not myself, our local Strom service, but I've been watching all the process).
Quote:
- This year I decided to adjust the throttle cables as I felt they were a bit loose.
This can be a problem as I've installed handlebar risers. But the revs never fall below below 1000 while driving, only at braking (ie I can leave the throttle intact and the revs will slowly go down to 1200 or so. But while braking they can drop to 700 for a second). So I think it's not an overtightened or loose cables, but will check.
Quote:
I have 136000 km on mine and no sensors changed yet
93000 so far and second change. I can't imagine what's leading to their death, but they come out of range. And it's the Moscow Strom society's problem, not just mine...
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post #4 of 16 Old 08-25-2019, 10:18 PM
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"In my case since the return cable was slightly too tight" when suddenly decelerating it's as if it kept the rpm's below 1000 just long enough for it to stall.

I wish you good luck.

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post #5 of 16 Old 08-25-2019, 10:26 PM
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Quote:
Originally Posted by Thug View Post
Hard miles, thanks for the reply.
Throttle bodies synced along with the TPS adjustments - that's the first I've done (not myself, our local Strom service, but I've been watching all the process).
.... I can't imagine what's leading to their death, but they come out of range. And it's the Moscow Strom society's problem, not just mine...

What happens when they get out of range ??

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post #6 of 16 Old 08-25-2019, 11:38 PM
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If your bike will not start without pulling your clutch leaver in you don't have a switch problem that can cause the bike to stall.

If your bike will start without pulling in the leaver you have a switch problem that can cause the bike to stall.

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post #7 of 16 Old 10-15-2019, 07:01 AM Thread Starter
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Sorry for long silence, guys.
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Originally Posted by Hard miles View Post
What happens when they get out of range ??
The bike may stall after a long run and stopping with clutch pushed. And no reaction for 15-30 minutes until it gets a bit cooler. In the beginning of the problem you may be lucky to start the engine with the throttle turned for 1/3-1/2, then it becomes worse and no magic helps. It seems hard for the bike to ride, slower response to throttle, the temp begins to rise up to 4 bars while driving (not in jams, just city traffic).

[QUOTE=Rolex;5430633]If your bike will not start without pulling your clutch leaver in you don't have a switch problem that can cause the bike to stall.
Well I was lucky to do a test yesterday as I've got new gloves which are thin and I can pull the clutch to a click of switch. So while riding to get the gloves I've got a stalled engine just while stopping at the traffic light (3 bars of temp BTW). While driving home having a clutch lever fully pulled - I've seen revs dropping under 1000 much rarely and the engine seemed to work more smooth at braking. So I'm a bit confused if the switch actually doesn't play any role. But I'm not quite sure about the fuel filter cleanness, so will check it and a banjo bolt with switch next season.
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post #8 of 16 Old 10-19-2019, 11:29 PM
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sounds to me like a bad TPS.

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post #9 of 16 Old 10-19-2019, 11:48 PM
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You should NEVER hit 4 bars temp. 3 Max. The fans will kick in at 3 and keep it there until it goes back to 2 bars, which is normal. Someone here may chime in and say, "I hit 4 bars sometimes for a few seconds," but they don't live in Moscow; they live in Dubai.

You may have a cooling system problem or something else causing the engine to run hot. Obvious suspects include the rad cap and thermostat and fan. It could also be the radiator is clogged or the water pump is not functioning well.

Valve clearances are in spec?

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post #10 of 16 Old 10-20-2019, 12:09 AM
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I'd suggest that you bridge the clutch switch to test if the issue still occurs. No problems, then it is the switch. If the stalling problem continues, look elsewhere.
Take the bridge off once you have done the test.

As well as the TPS another common problem is the side stand switch. Try zip tying the sidestand up.

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