I have close to the same setup as you and I too had the same issue. I played with the map, I believe it was not getting enough fuel so I added in the lower RPM and it has been running great.

 

Has this happened to anyone on a completely stock bike? I read back to the beginning and got to thinking. I had this problem after I did a pipe, PCV, IRC harness. I would be down shifting, pull in the clutch, it would die. Hit the starter, comes right back to life. I notice the red oil pressure light before anything else. I assumed TPS setting off the bat, but I had never had a problem when the bike was stock. Possibly such a short exhaust, remapped, ignition timing change. This seems to be a touchy problem. Since there are handfuls of things to cause them.

It actually happened on my bike, which it hasnt done since I did a firmware update ( directly from dynojet.com ) and tps resync.

My dad has a 2008 Goldwing, he has a very similar problem, except his bike is totally stock, and doesnt do it very often.

 

Yes, my bike is completely stock, it does it once in a while right after I leave my house in the morning. Does it once, then not again.
First post.

 

All you guys running a PCV, double check your FIRMWARE versions, I had this problem when I put mine on, updated the firmware and reset the TPS and I have not had a problem since.

 

It had to be something related to my bike and an aftermarket exhaust. I put the stock pipe back on and the symptoms were completely gone. The engine speed never once dropped below idle speed when I was coming to a stop. No stalling whatsoever. The dealer even tried to correct this issue on the dyno by adjusting my PC V map and it was still stalling after their adjustments. Now its time to sell my Leo slip on, PC V and IRC if anyone is interested.

 

Don't sweat the warranty. This is a documented issue that started before the warranty ended. Honda has to make you happy. It's the law.

 

Where is this documented?

 

Pulled the PC V and the IRC. Bike is still stalling. Only mods left are the Leo Vince slip on with quiet insert and a BMC street filter. To top it all off my warranty expires on Sunday.

 

This isn't a rider error type thing, jeebus krist. It shouldn't do this no matter what.

 

Griff, just try downshifting through your gears and don't hold your clutch in until just before coming to a complete stop. It should not stall like this because this is how your bike was designed to operate.

Your high RPM chop-offs, timed with holding in on the clutch, are allowing the engine to stall.

 

I honestly don't think it has anything to do with the way I am riding. At some point you have to pull in the clutch when you are stopping... that is when my bike stalls. If I am coming to a stop and let the bike engine brake in first and then pull the clutch in right before the stop (say I pull it at 2000 rpm, 800 rpm before idle), it stalls. I am not just slamming the throttle closed and pulling the clutch in 1/2 mile before a stop sign and coasting in. I doubt the Honda engineers made a bike with such a fragile engine control routine. My bike had approximately 1200 miles with no issues and no changes in my riding habits. Now I start having problems so it is obviously rider error....

 

Nevermind what I said before..... my bike is still stalling even with the new cam position sensor.

 

I also have a 2008 cbr1000rr that I purchased about 3 months ago. I put a Leo Vince exhaust on at 2,000 miles and have almost 8,000 miles now. I have NEVER! had a problem with this bike until recently when I started my new job closer to home. I was riding 80 miles a day to work and back and now I'm down to 25 miles a day. But it all started one day leaving work I pulled out onto the main road after letting the bike fully warm up and the first light that I got to which was only about 1/8th of a mile down the road it cut off on me as soon as I pulled in the clutch, and it fires right back up when I hit the start button. It did it again to me two days in a row after that at the same light leaving work once again. It did not do it again until just monday when we were riding in the rain on the interstate and a car was going intensely slow so i slammed on the brakes and it stalled just like it had before. I just called Honda and they don't have a clue to what it could be and it is my everyday rider so I don't feel comfortable dropping it off for a long while. Does this help anyone as to what this bike is doing?

One thing that I could do to duplicate the problem was close the throttle and let the bike decel for a few seconds (in lower gears, 1st or 2nd) and then pull in the clutch. If you can get it to stall somewhat repeatably doing this then it sounds very similar to my problem. So far replacing the cam position sensor seems to be the fix.

 

2008 CBR1000RR STALL

I also have a 2008 cbr1000rr that I purchased about 3 months ago. I put a Leo Vince exhaust on at 2,000 miles and have almost 8,000 miles now. I have NEVER! had a problem with this bike until recently when I started my new job closer to home. I was riding 80 miles a day to work and back and now I'm down to 25 miles a day. But it all started one day leaving work I pulled out onto the main road after letting the bike fully warm up and the first light that I got to which was only about 1/8th of a mile down the road it cut off on me as soon as I pulled in the clutch, and it fires right back up when I hit the start button. It did it again to me two days in a row after that at the same light leaving work once again. It did not do it again until just monday when we were riding in the rain on the interstate and a car was going intensely slow so i slammed on the brakes and it stalled just like it had before. I just called Honda and they don't have a clue to what it could be and it is my everyday rider so I don't feel comfortable dropping it off for a long while. Does this help anyone as to what this bike is doing?

 

I also have a 2008 cbr1000rr that I purchased about 3 months ago. I put a Leo Vince exhaust on at 2,000 miles and have almost 8,000 miles now. I have NEVER! had a problem with this bike until recently when I started my new job closer to home. I was riding 80 miles a day to work and back and now I'm down to 25 miles a day. But it all started one day leaving work I pulled out onto the main road after letting the bike fully warm up and the first light that I got to which was only about 1/8th of a mile down the road it cut off on me as soon as I pulled in the clutch, and it fires right back up when I hit the start button. It did it again to me two days in a row after that at the same light leaving work once again. It did not do it again until just monday when we were riding in the rain on the interstate and a car was going intensely slow so i slammed on the brakes and it stalled just like it had before. I just called Honda and they don't have a clue to what it could be and it is my everyday rider so I don't feel comfortable dropping it off for a long while. Does this help anyone as to what this bike is doing?

What are the temps/ humidity like now, compared to when you bought the bike 3 months ago?

 

I have the Leo Vince Evo II with the sound reducing core installed so the flow isn't as different from stock as the MGP. The air fuel changes they made to my PC V map did not correct the problem either. It stalled right after I picked it up on the way home from the dealer. I did finally get my bike back, after it was at the dealership for 1 month. They replaced the cam position sensor as someone else on here had mentioned. So far this seems to have fixed the problem. I haven't had a chance to thoroughly test it though so I can't say for sure it was the problem. As a side note, my dealer mentioned they had a hard time diagnosing a 1000rr in the past with similar problems and it turned out to be the cam position sensor.

 

sounds like they were spot on with the air fuel ratio being the problem. I put a MGP growler on my bike (with out a power commander) and had the exact same problem. I put the stock can back on it and it completely fixed the problem

 

My bike has been at the dealer (it's still under warranty) for the past 5 days. They were able to duplicate the problem but could not determine the cause. They decided that a poor air fuel ratio created by my mods could have been the cause of the problem so they put the bike on the dyno. I was told the air fuel on decel was pretty lean so they made a few changes to the map and it fixed the problem. I went to pick the bike up yesterday and it shut off on my ride home. Needless to say I turned around and dropped it back off.

 

My bike has been at the dealer (it's still under warranty) for the past 5 days. They were able to duplicate the problem but could not determine the cause. They decided that a poor air fuel ratio created by my mods could have been the cause of the problem so they put the bike on the dyno. I was told the air fuel on decel was pretty lean so they made a few changes to the map and it fixed the problem. I went to pick the bike up yesterday and it shut off on my ride home. Needless to say I turned around and dropped it back off.

Thanks for the follow-up.... Sounds like they were guessing.

 

I was actually able to duplicate it today..... not 100% of the time though. I'm not so sure the bike is stalling as much as it may just be shutting off (ECU telling the engine to stop). What I did to repeat it was close the throttle (I was at about 5k), let the bike engine brake and decel for a few seconds (Maybe let it drop to 4.5K to 4K), then pull in the clutch. I did this twice and it was instantly dead. I was in a low gear, I think second. The thing I noticed while watching the tach and doing this was that it almost looked like the oil light was on way before the tach dropped to zero. That is why I am wondering if it is just shutting off and not stalling. Last night I put in the zero map and verified the one I had loaded had all zeros in the 0% column. It doesn't look like its the PCV map at least. The mods I have are Leo Vince slip on with sound reducing core installed, BMC street filter, PCV and IRC. The IRC is installed after the PCV so the PCV sees the full TPS voltage.

 

Like Mike said, I would begin to downshift through the gears when coming to each and every stop. By doing this, I would be interested to learn whether or not this corrects your problem with stalling.

 

my bike has done the same thing also, I TOO CANT JUST MAKE IT DIE BY TRYING, my bike was totally stock too now i have pcv and irc and hasnt happened yet but then again i havent rode a whole hell ofallot lately

 

For me, this problem didn't show up until after I put 1000 miles on my CBR. I honestly don't think I have changed my riding since then. I can't duplicate the problem by chopping the throttle. That being said I have noticed the problem more frequently when I pull the clutch in early and coast to a stop instead of coming down through all the gears. I can't really comment on your theory though because I am not familiar with exactly how the ECU uses the injectors during decel/coasting situations. If the fuel is cut, at some point the injectors need to come back on before the engine speed gets too low. If this is the issue then I think the problem would be more widespread.

 

For me, this problem didn't show up until after I put 1000 miles on my CBR. I honestly don't think I have changed my riding since then. I can't duplicate the problem by chopping the throttle. That being said I have noticed the problem more frequently when I pull the clutch in early and coast to a stop instead of coming down through all the gears. I can't really comment on your theory though because I am not familiar with exactly how the ECU uses the injectors during decel/coasting situations. If the fuel is cut, at some point the injectors need to come back on before the engine speed gets too low. If this is the issue then I think the problem would be more widespread.

I think you have to pull in the clutch early as well as chop the throttle, although maybe just check-up on the throttle would be a better description of it. If you just pull in the clutch but keep rpms high by revving it, it won't happen. I see what you mean though about not seeing it for the first 1000 miles.

How widespread? I've seen like 4 or 5 threads here where people have asked about it. It may be possible that if someone were to clutch this way and it happened a time or two, they simply alter the way they clutch without giving it much thought....

my bike has done the same thing also, I TOO CANT JUST MAKE IT DIE BY TRYING, my bike was totally stock too now i have pcv and irc and hasnt happened yet but then again i havent rode a whole hell ofallot lately

Next time see if you can catch it happening and notice if you pulled in the clutch early.

 

^No comments? Unanimous agreement on this issue, then?

 

So far I haven't been able to reproduce it intentionally.... I haven't quite figured out exactly what I am doing prior to it happening. I'm not sure if it is based on the RPM at which I pull in the clutch before stopping.

 

So far I haven't been able to reproduce it intentionally.... I haven't quite figured out exactly what I am doing prior to it happening. I'm not sure if it is based on the RPM at which I pull in the clutch before stopping.

This is interesting because now you can't reproduce the problem even when trying.... There have been a number of posts on this subject in the past, and to my knowledge there has never been a satisfactory answer given. I noticed it on my '08 when I first got the bike 2 years ago.

However, I do have a theory....

My understanding is that "fuel cut" occurs when you close the throttle with the engine above some number of rpms (say, 4500 rpm). At this point, the injectors stop working. When you reapply throttle, there is a delay before the Fi system starts working again. If you happen to be holding the clutch in at this same time, engine rpms can plummet to zero and the enging will stall. If you let the clutch back out with enough vehicle speed, the engine will bump start itself back up again.

This seems to occur mostly with new owners when they first start riding the '08 on the street. It also seems to occur as they approach a traffic light or stop sign.

The answer, IMO, is to not chop the throttle off in the first place. Its never a good idea to do this and is a bad habit to get into. The other aspect is pulling and holding in the clutch too soon before coming to a stop. You should be properly downshifting until just before coming to a stop, or until engine rpms are low enough.

Any comments or ideas about this??? Does it seem like a valid explanation?

Mike.

 

Can you reproduce this by intentionally chopping off the throttle when you pull/hold in the clutch as you approach a stop??

 

I did install the latest firmware once the problem popped up a few weeks ago. I have all zeros in the 0% throttle column so the PCV shouldn't be doing anything to the fueling because the bike is stalling with the throttle closed. I will go ahead and put in a zero map and give that a try.

 

I think there have been some firmware updates on the PCV, make sure you have the latest firmware. If that doesn't help, then put a zero map into the PCV, and see if it still has a problem.

If the zero map doesn't fix it, THEN remove the PCV like lexusrx suggested.

 

I checked the throttle position readout in the Power Commander software and everything looked good. I also took the bike apart and checked all the connectors and vacuum lines. Everything was fine there too. I recalibrated the TPS in the Power Commander, went out for a ride and am still having the problem. It doesn't die every time I come to a stop but I can often feel/see the bike struggle for a split second when the engine settles down to idle when I am stopping. Often it will recover but sometimes it doesn't and that is when it stalls. Any other ideas?

 

I thought about checking the PC V to make sure it is seeing the TPS correctly. I checked it with the bike cold and it looked good. I will check it again when the bike is up to temp though.