I currently have an intermittent FI error with my 650 vstrom. The bike is running fine apart from slightly increased fuel consumption so there is obviously something going on. The problem is I don't seem to be able to pin down the problem as the ECU is not showing any error code ? But the FI light comes on from time to time with "FI" showing on the display. I've done the dealer mode thing each time but nothing is coming up? ( C00 shown each time = no fault)

Does anyone know if an intermittent fault should be stored or not?

I would like to be able fix the problem before its a problem, if you follow...but bit hard without that error code to give me a clue ! :confused1:

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Regards Tim

Learning my craft for the big stuff, it won't be long now and it's not that far anyway

Hi Tim!
There is no error storage on the V-Strom.
The engine must be running when the F1 error shows up. Either you use your second key to remove the saddle and bridge the connector while the engine is running and the error shows up or you or you build a switch to the connector and look up the error code.

Regards
Stefan

Thanks Stephan, that explains why it reads no fault every time

I think I will put in a switch for that, it makes sense.

__________________
Regards Tim

Learning my craft for the big stuff, it won't be long now and it's not that far anyway

The code.shows it is STVA problem. Is this likely to be a "clean & adjust" or a replace part?

sent via tapatalk on the road.

__________________
Regards Tim

Learning my craft for the big stuff, it won't be long now and it's not that far anyway

Hi Tim!

Error code c28 it is?
I would check all the related connectors if they are corroded and spray them with WD40.
The web is full of posts about this problem but to me it looks difficult to clean the stv's for myself.

Regards Stefan

Yes c28. My thought was that it is electrical rather than mechanical. Have to look at weekend when I can lift the tank.

sent via tapatalk on the road.

__________________
Regards Tim

Learning my craft for the big stuff, it won't be long now and it's not that far anyway

my error was due to a loose battery ground.

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Hi,
Could you sove the problem?

Thanks in advance for informing.

Joker

It just went away and sofar has not happened again.


regards Tim sent by tapatalk

__________________
Regards Tim

Learning my craft for the big stuff, it won't be long now and it's not that far anyway

After a short 5 day trip, with some rain my problem came back. Lost quite a bit of top end power especially at elevation. Today at home I decided to have a look. Striped down the throttle body linkages and found the front secondary valve was almost stuck solid ! Dismantled / cleaned / lubed. All works as it should. Seems it is a common problem with vstrom, particularly the front cylinder throttle body. Worth making it a regular service schedule item to lube the ends of valve rod and assy. If you have C-28 error this could be it.

There is a video on Youtube explaining it well. https://www.youtube.com/watch?v=LYM-80q0JyA

__________________
Regards Tim

Learning my craft for the big stuff, it won't be long now and it's not that far anyway

I misunderstood your problem when you guys were talking about error codes and such ... but once you actually pulled the seat off and looked at the throttle body butterfly valves ... I understood perfectly. The same happened to my '02 DL1000. Stuck throttle body butter flys/rods. YES, pretty common problem on Vstrom AFAIK. (one of very few problems with that bike!)

I eventually removed the secondary butter flies completely. Not sure what guys do on Wee Strom? Mine 1000 ran better with NO secondaries installed.

The paper air filter does not help in this regards. Not sure if there is an alternative now? My TB mechanism was not only stuck, but covered in DIRT after a long Baja trip.

Don't know if Wee uses same paper filter as DL1000? Paper filter does not like water either, but I'm sure you knew that. Glad you found the issue. If you go Off Road and in dust, you need to change air filter often or find a reusable one.

I did consider removing the butterflies as some have done, but my view is they are there for some reason, what ever it is, so decided against it. The other view I had was it will not stop the rods from getting tight and creating the FI error ( c-28), following that the ecu may or may not adjust something to take into account the lack of airflow? Should the butterflies not be there, what effect might that have on the "burning of fuel" etc if the ecu reads a "lack of airflow" but the isn't really ..................if you follow that

More likely it's just me over thinking things .............

As for the air filter I have seen a few mods for replacing with an off the shelf car sponge type, but the main reason for this was cost cutting. It's not been a huge problem even off road. If its particularly dusty I knock it out occasionally. So far I haven't drown it but imagine it would be useless after a drink.

At least now I know what the problem might be for the error code should it happen again

__________________
Regards Tim

Learning my craft for the big stuff, it won't be long now and it's not that far anyway

The good thing about the V and Wee Strom is so much is known about them, many thousands of owners have tried just about everything two or three different ways. BUT ... IMHO, If you could sub an oiled, foam filter for the stock paper one, I would JUMP on that ASAP.

This problem would never happen if the air filter was working 100%. No dirt is supposed to get in there, rods and butterflies should be clean. I took to laying down a small grease bead on sealing edges of my paper filters upon install. REally did help reduce amount of dirt ingress.

On my DL1000 no codes or F.I. things came up after removing secondaries.
Throttle response was actually BETTER right off the bottom and fuel economy was the same. Win Win for me!

It was funny to rev the bike and watch the rods move to "adjust" the secondaries ... with no secondaries there! Yet, everything ran normal!

NOTE: I've no idea if any of this applies to Wee Strom. But like the DL1000, I'm sure it's all been worked out for the Wee by someone on some Wee forum somewhere.

The durability of the DL1000 motor is astounding. Even after ingesting quite a lot of dirt from many many off road rides, my DL1000 engine still showed FULL compression, valves remained in adjustment with NO oil use to speak of at 90,000 miles of very hard use. Yes, the bike had very good maintenance and oil changes but was used FAR harder than most. Very tough bike overall, and looks like WEE is just as tough.