I have an 07 ,I'm getting a surge between 3500 and 4000 rpm at low throttle opening.I have a full system brock street meg,PCIII,full map support,kleen air bypassed.I've have this problem with the PCIII in or out of the system,so its not the power commander.The throttle bodies are in sync,I've checked primary and secondary resistance on my coils.The problem occurs only when riding easy, it seems to get worse as the bike gets hotter
07 Motorcycle Surging at 3500-4000 RPM with Brock Street Meg and PCIII
darryle
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I have an 07 ,I'm getting a surge between 3500 and 4000 rpm at low throttle opening.I have a full system brock street meg,PCIII,full map support,kleen air bypassed.I've have this problem with the PCIII in or out of the system,so its not the power commander.The throttle bodies are in sync,I've checked primary and secondary resistance on my coils.The problem occurs only when riding easy, it seems to get worse as the bike gets hotter
Dar,
Say we are riding in 6th gear... Is this when it happens on cruise @ 3 ~ 4000 rpm?
Say we are riding and it hiccups every so often. All things check out. No air leaks being open loop is pretty sensitive.
So if you say yes, all things check out... Manual says an ECU might be the puppy. I would not mention this unless you come back, say it does happen in 6th. Why? Because that miss at about 3,200 on up should be felt through shifting as well. It does not take a gear to cause it. It takes rpm, correct? That means you are running up to that rpm range and she does that bucking or maybe it is a surge?
We do not want to throw parts at it if we do not get our terms down. I can experience a bucking kind of spitting kind of misfiring/back on firing; @ said rpm range. Not necessarily a surge. I was out of sync when I swapped throttle bodies. That 'surrrrrrrrge' was so bad, I turned around, I couldn't ride it, it was way off sync and I took a guess at the sync screw before I installed the unit. So, I just want to be on the same page is why I borrowed a bad ECU so I could tell here, right now; WATT we are looking at? And I want to thank NM for the borrowing of his unusable ECU.
I have an '06 ECU that I borrowed I need to return. That thing is one pain in the A ride at about 3,200 rpm. So, if that surge is not sync related, not air leak related, then it is more you take a chance on swapping an ECU with someone before you plunk down the big bucks for one or have a dealer with a 14 on the floor, you take the bike in and see if they can diagnose that surge-miss-??? and determine if it is the black box.
Remember the manual has not change the wire colors, meaning, you can plug a 14 computer in the bike of any year and that miss should disappear. That seems to be your next step.
Say we are riding in 6th gear... Is this when it happens on cruise @ 3 ~ 4000 rpm?
Say we are riding and it hiccups every so often. All things check out. No air leaks being open loop is pretty sensitive.
So if you say yes, all things check out... Manual says an ECU might be the puppy. I would not mention this unless you come back, say it does happen in 6th. Why? Because that miss at about 3,200 on up should be felt through shifting as well. It does not take a gear to cause it. It takes rpm, correct? That means you are running up to that rpm range and she does that bucking or maybe it is a surge?
We do not want to throw parts at it if we do not get our terms down. I can experience a bucking kind of spitting kind of misfiring/back on firing; @ said rpm range. Not necessarily a surge. I was out of sync when I swapped throttle bodies. That 'surrrrrrrrge' was so bad, I turned around, I couldn't ride it, it was way off sync and I took a guess at the sync screw before I installed the unit. So, I just want to be on the same page is why I borrowed a bad ECU so I could tell here, right now; WATT we are looking at? And I want to thank NM for the borrowing of his unusable ECU.
I have an '06 ECU that I borrowed I need to return. That thing is one pain in the A ride at about 3,200 rpm. So, if that surge is not sync related, not air leak related, then it is more you take a chance on swapping an ECU with someone before you plunk down the big bucks for one or have a dealer with a 14 on the floor, you take the bike in and see if they can diagnose that surge-miss-??? and determine if it is the black box.
Remember the manual has not change the wire colors, meaning, you can plug a 14 computer in the bike of any year and that miss should disappear. That seems to be your next step.
Hub ,problem only occurs if I'm nice.Our weather is getting cold fast, 9 celius on sat.I'll take her out saturday and see if I get the surge in 5th and 6th.When I ride quickly no problems any thing after 4 grand.WOT 3rd gear 4 grand is eating my new corsa III's.Miss you on the other site send me an email (zrx11@sympatico.ca)Darryle
Dar,
We need to sneak up on it. The tires will not even warm up for this test. Go real slow up to the rpm. We want that shutter to happen as it floats in that rpm range.
If it's too cold to ride, plant the exhaust out the garage door. Start it, idle it till you see one water bar show on the dash. Then, slowly idle up to those stumble numbers, see if we can feel it. Sit on the bike so you can get an answer through the bars or seat or the ears.
I rather it be under load, but if it hits a wherever it hits, then it is in the map climb up the ladder. Something is amiss = ECU? See, it's like a process of elimination. Gotta have a good set of spark plugs. A clean air cleaner. Basically a tuneup with the throttles sunk and all clearing the variables so we do not swap out the ECU.
See, 20/20 hindsight said a dirty air cleaner stumbling surge. We have that element to check out still. We can't jump to conclusions yet.
So, when you can, check and report.
We need to sneak up on it. The tires will not even warm up for this test. Go real slow up to the rpm. We want that shutter to happen as it floats in that rpm range.
If it's too cold to ride, plant the exhaust out the garage door. Start it, idle it till you see one water bar show on the dash. Then, slowly idle up to those stumble numbers, see if we can feel it. Sit on the bike so you can get an answer through the bars or seat or the ears.
I rather it be under load, but if it hits a wherever it hits, then it is in the map climb up the ladder. Something is amiss = ECU? See, it's like a process of elimination. Gotta have a good set of spark plugs. A clean air cleaner. Basically a tuneup with the throttles sunk and all clearing the variables so we do not swap out the ECU.
See, 20/20 hindsight said a dirty air cleaner stumbling surge. We have that element to check out still. We can't jump to conclusions yet.
So, when you can, check and report.
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