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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 The previous version was outdated and no longer supported.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!
4k rpm cut out
- Thread starter marcohen
- Start date
Glengemen
Husqvarna
AA Class
I have not heard of this but it sounds like a safe/limp mode if I were to guess. First thing I would do is pull the plastics and check your wiring connection to make sure none are loose or have water. Then I'd pull the plugs and check to see they are firing And in good shape.
If you were somewhere with a MOSS tool they would be able to tell you exactly the source, but there sure aren't many of those!!
If you were somewhere with a MOSS tool they would be able to tell you exactly the source, but there sure aren't many of those!!
I'll throw this out: Years ago I had a similar issue with a Ducati 907ie. It would run up to 6000 rpm and then just fall on it's face -- it was a fuel filter that was partially plugged and restricting fuel flow. Once the filter was changed -- bingo full rpm. So, it's possible you got some debris from some contaminated fuel. I've also had that happen on two occasions -- once with diesel that got mixed with premium at a station and at another with water.
nev..
Terrarist
+1.
I had an issue on my other bike with a dirty high pressure fuel filter restricting fuel pressure and this is exactly the sort of behaviour it exhibited. EFI systems require a very high fuel pressure from the fuel pump to operate correctly. On my DL1000 the factory spec is for the fuel pump to pump a minimum 1.25 litres per minute, but in good condition it will actually pump fuel at double that rate. Once the pressure dropped below about 500ml per minute the engine wouldn't run at any throttle opening above idle.
http://docs.husqvarnaoutlet.com/parts//2013 TR650 Parts.pdf
On the Terra parts diagrams, all of the components of the fuel pump are just labelled ina group as Fuel Pump. It looks like there is a strainer on the bottom where it sucks in fuel. Probably need to drag that all out from inside the fuel tank and just see exactly what is what. Because of the the setup with the tank being right under the seat, it might be quite simple to measure the fuel flow rate that you're getting, and fuel flow rates that others are getting to see whether that might be the issue.
As someone else said. If the engine light is coming on, it's almost certainly logging a fault, and the MOSS should be able to extract the fault code and likely causes/solutions.
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Riding Again
Husqvarna
AA Class
This forum is great. Nev good follow up with the helpful information. I will through this out there too. Could be a blockage of air as well. Randomly sucked a plastic bag into the intake on the way home and no where to pull over for a few hundred feet. It caused my bike to react in the same way. Never got better and did not throw a code. I puled over in the few hundred feet and removed air filter took bag out good to go. My situation was obvious and easy to determine. Although I put a plastic bag in the intake when I wash the bike and paid extra attention to make sure I take it out after I am finished. Probably fuel filter/pump but air intake causes the same type of problem and easy to check real quick.
glitch_oz
Husqvarna
Pro Class
The "engine light" (on the dash, I guess) is rather indicating an electric/ electronics issue, rather than a blocked fuel or air filter. I'm with Glengemen on this.
Yes, it sounds like 'limp" mode cutting in when the engine cut-out happens again and again at exactly the same RPM.
Checking the connectors/ wiring connections and giving the one or other major one a little WD40-bath might be a good start.
drzcharlie
Husqvarna
Pro Class
I'm taking a different tact on this. I think the fuel cap might be causing vapor lock. The ball in the cap is sticking, the fuel supply is temporarily cut off causing the cut out.
glitch_oz
Husqvarna
Pro Class
And that adds a red ball to all the other colours already on the court
At least that's a quick-fix
nev..
Terrarist
One way to narrow this down is to find out if the engine cutout is linked to a particular throttle opening, or a particular RPM point. Give it a variety of riding conditions - small throttle openings gradually building up revs in lower gears and with wide open throttle in higher gears from lower revs. I suppose if it's linked to an RPM range it's probably electrical and if it's linked to a throttle position then air/fuel will be probably be the culprit. It might be worth running through the procedure someone posted in another thread for resetting the TPS too.
mag00
Husqvarna
Pro Class
Hi Marc, you getting in some good exploring?
How close is the nearest moss?
Fixing the breather vent is easy and cheap enough to start with, then go from there. As long as it is not leaving you stranded, that is.
When was the last spark plug change? Wonder if bad plugs could throw an error? With all the high tech electronics, anything is possible.
How close is the nearest moss?
Fixing the breather vent is easy and cheap enough to start with, then go from there. As long as it is not leaving you stranded, that is.
When was the last spark plug change? Wonder if bad plugs could throw an error? With all the high tech electronics, anything is possible.
Riding Again
Husqvarna
AA Class
If it is plugs would have to be really bad plugs. I have ran a wide range of gaps and no error codes. I would think with the error code probably electrical. Although clogging fuel or air would produce the results consistently then get worse as time goes on as filters get clogged more. Bad vent with a tight sealing fuel system should just kill the bike unless again small air leak enough to let 4k rpm's worth of fuel through.
drzcharlie
Husqvarna
Pro Class
I disagree, well kinda. My DRZ was prone to vapor lock. It turned out that when the vacuum was drawn on the tank, fuel wouldn't flow. When the bike was turned off the pressure equalized and I had fuel again until the bike got really hot and the cycle started over. I pulled the seal ball out and it quit doing it all together. It may not be this at all, but it's a fifteen minute fix and worth a try.
Hi Dave,
Great ride today from Hobble Creek canyon to halfway point to Strawberry lake. Look it up on Google. Yes many great rides in this area we are in. Found a Moss 40 miles up the road so next week will have it done. Sure will be nice to open the Terra up again.
TheBeer Hunter
Husqvarna
A Class
http://www.cafehusky.com/threads/terra-rev-limiter.37121/ - Please see this post "Terra Rev Limiter" : I had the problem and it is now fixed. Hopefully this will assist.
Glengemen
Husqvarna
AA Class
Reason I mentioned plugs is that I don't know the strategy in which they use them. The second plug coil may come in at upper RPMs. Say maybe 4k? This is purely a shot in the dark, but it would be part of my diagnosis process if it were mine. This is especially true when you have a consistent symptom with an electronic indicator.
The above thread sure has an interesting ending I never would have guessed!
I took the Terra this morning to get mossed. For the first 20 miles I was all smiles then the engine light came on and the engine cutout until I pulled in the clutch and rpm's dropped to 3k. Called the shop and taking it back in for more wrenching. I am pleased that this shop has good communication with Husky and have resolved problems I was told with their help.
My Terra is still in the shop since October sitting alongside two others with the same problem. Will have owned it a year in February and had one month of somewhat good riding. I also found out the dealership that sold it new never registered it. Sure glad I have other worthy bikes to keep me going.