| Author | Message | ||
     Stimbrell |
My EBR ecm has now started to raise the rpms when I let the clutch out, the same way the stock ecm does, can anyone think of a reason this should happen, at first I thought I was imagining it but now it is definite, revs raise to about 2,200 when I let the clutch out, neutral or clutch in and idle is normal. very strange. | ||
| Two_seasons |
Designed that way so you don't stall on takeoff. | ||
| Figorvonbuellingham |
mine always did that. | ||
| Stimbrell |
I know the stock ecm does this but the EBR I have had fitted for the last couple of years has never done this before, just started in the last two weeks. | ||
| Clutchreaper |
I think it's a function in the ECM that can be turned on or off by reading the clutch state. Who knows if some form of static messed it up. I could also be completely wrong as I can't even figure out my own bike problems. | ||
| Stimbrell |
All suggestions are welcome, I will have a look with Tunerpro RT and see if I can find the setting. Cheers | ||
| D_adams |
Any recent service work done? Wires re-connected? | ||
| Stimbrell |
Only a routine oil change, the only other thing of note I can think of is I have noticed the bike was hunting at idle occasionally, revs briefly raising then returning to normal, a tps reset fixed that but may be related. | ||
| Reepicheep |
Doesn't TunerPro and ECMSpy destroy an EBR ECM if you use them on it? | ||
| Jgarner99 |
The switch on the clutch is hardly robust. Sounds to me like your switch had a bad connection, which then "fixed" itself (similar things have happened to me). That seems much more likely than the ECM somehow changing its programming. | ||
| D_adams |
Btw, if you disconnect the switch at the clutch lever, it should stop doing the raised idle as you let the clutch out. | ||
| Stimbrell |
Reepicheep, I have used Tunerpro to make changes to the EBR ecm for years with no problem. Jgarner99, I thought about this but I think I would have lost the gear indicator if that was the reason. D-adams, I would disconnect the clutch switch but I would lose the gear indicator and would always be concerned I was using a band aid to cover another problem. | ||
| Figorvonbuellingham |
I meant my race ecm has always done that. | ||
| Stimbrell |
I understand that various versions of the EBR ecm have behaved differently, mine never raised the rpm on clutch out, I understand others did. It is the fact mine has suddenly changed that bothers me. | ||
| Figorvonbuellingham |
Get it reflashed. | ||
| Blk09r |
Did you do the oil change or was it the dealer? Any chance they re-flashed it? | ||
| Stimbrell |
I did the oil change but the idea to reflash is a good one as I always take copies of the ecm before I make any changes, I will reload the last copy and see if that makes a difference, thanks for that. | ||
| Ratbuell |
Gear indicator has no reference to clutch switch. Gear indicator is simple math - the cluster looks at RPM and vehicle speed, compares them to a chart, and "figures" what gear you are in. When you pull the clutch, the gear indicator goes to "-" because the math doesn't "add up" - idle revs versus XX road speed returns a null value. I'm betting clutch switch. | ||
| Stimbrell |
I reloaded the last flash and it has not changed so I checked the clutch state in diagnostics which showed no problem but have taken the switch apart and cleaned it anyway. I have changed the deceleration correction from 95% to 100% and will see if that changes anything, thanks for the info on the clutch switch and its effect on the gear indicator, I thought I read that it was needed for the gear indicator to work. | ||
| Firemanjim |
Not sure on the Buell, but other bikes have a nuetral/clutch in map they go to that is very different from the regular maps, pulling timing and lowering the rev-limit,so if it deleted you are stuck in the low performance map. | ||
| Stimbrell |
Today each time I stop I have to do a tps reset or the revs fluctuate between normal and 2k rpm, not a ecm issue but possibly a iac problem I think. Any thoughts welcome. | ||
| Oldog |
I see this in an industrial setting commonly when the control system does some thing unexpected we blame the control system. after an investigation usually it is an external device ( sensor / actuator ) it is amazing how many times the simple gets over looked and the dread of dealing with the "Computer" takes hold. | ||
| Ratbuell |
Sounds like your decel correction change made it unhappy... | ||
| Imblasted |
my gear indicator used to show -- for clutch in, but now it shows 6 or another gear. 6 down to about 25 then it goes down to 3. I don't remember what it does at a stop guess ill look tomorrow. It changed after changing the clutch slave cylinder, which doesn't really make any sense unless i improperly torqued the nut. but seeing as it doesnt slip i feel it is not that. i dont have a torque wrench right now... | ||
| Stimbrell |
I fixed the revs fluctuating today, I slowly sprayed carb/FI cleaner in to the IAC hose in the air box as the bike idled, switched off the bike and sprayed inside the throttle bodies, left the bike for a couple of hours then did it again and the bike now idles smoothly again, next I will try adjusting the deceleration correction settings to see what effect that has. | ||
| Stimbrell |
Just to bring this to a conclusion the revs started fluctuating again and the bike dieseled on over run, it turned out to be the butterfly valve in the front throttle body was not closing fully when the bike was fully at operating temperature, loosened the two retaining screws and centred the valve and re-tightened the screws and all fixed. |
