RadarContact
New Member
(I was referred to Motogiro from TownsendsFJR1300, he thought if anyone could help Motogiro might be able to)
Warning...VERY long post...sorry.
Hi, my problem is with my 2007 (XV19CTMW) Stratoliner 1854cc V-twin.
Here's the history:
Bought the bike back in September 2014; it had hardened tires and it backfired really bad between gears so I only rode it a mile or two before doing some improvements to it. It came with a Patrick Racing Big Air Kit (individual K&N filters, stock air box removed), V&H 2-1 full exhaust, V&H FuelPak fuel mgmt, O2 still installed.
ordered new tires, and while I was waiting for them to come in...
Replaced handlebars (through bar wiring)
Sent ECU out to be reflashed by Ivan Rovinski (Ivan's Performance Products) and installed it. Ivan has sold hundreds(?) of these to Strat owners I interact with and none have had any problems, just high praise. Agreed...huge improvement. As part of the installation, besides just popping it into place, Ivan has you use the PCIIIUSB to adjust the TPS to a certain level (voltage?) which I was able to do.
Replaced the FuelPak with a PCIIIUSB as Ivan has mapped it to improve performance even further (unable to do with FuelPak)
As per Ivan, removed the O2 and used a plug he sent me to put in the now open O2 plug lead
Removed PR BAK and reinstalled stock air box but without the airflow restricting lid and upgraded to K&N filter (common practice and recommended by Ivan
Other non-pertinent cosmetic changes
After doing all of this (at the same time), I started having my problem.
*The problem is INTERMITTENT, and sometimes it happens when it is cold, sometimes when hot...sometimes right away after starting (15 seconds), sometimes halfway to work (a 26 mile ride). Sometimes after riding it and the idle shoots up (sometimes as high as 2500 RPMs, I could shut it down, count to ten, then restart and it would be fine, other times that trick didn't do squat).
I actually went almost three months without it misbehaving even once, then all of a sudden started again...I had just filled up with gas and the gas gauge wasn't responding (happens sometimes and is a somewhat common issue with the Strat), so I reached under the front of the tank and wiggled with wires that run to my instrument cluster and gas gauge, and it started the problem again...shot up to 2200 RPMs and stayed there until I got her home.
The problem (code #37 "ISC stuck open"):
The bike starts fine, always. Then after about 15 seconds, if it's going to misbehave right away, the idle goes straight up to around 1500-2000 RPMs and stays there. I can't "kick it down" or do anything else to fix it once it starts. If I then turn the bike off via the key, I can hear the ISC valve "jamming" instead of buzzing back to the park position. As if it's already fully open and it gets a signal to open more and it tries but can't. If it's NOT misbehaving and I turn it off with the key, it just buzzes like it's supposed to as it parks. Using the kill switch just shuts the engine down and nothing happens.
What I've done (although done at different times over the months as I've thought to do them):
Called Ivan who said it is not the ECU but a faulty ISC valve. I replaced the ISC valve, no fix.
Checked throttle play, is good at 4mm
Checked throttle cables, no binding or problems
Checked the lines that go from ISC to throttle body; no breaks or cracks -- removed each one and put vacuum on them and they held 20lbs negative pressure
Went through entire on-board diagnostic and found nothing wrong except for the air pressure sensors didn't give the correct reading so I replaced them. Turns out I'd done the test wrong so that was for nothing
Replaced battery
Checked every wire that goes between ISC plug and ECU plug for continuity, all good
Replaced O2 sensor, no change
Removed PCIIIUSB, no change
Synchronized throttle bodies using the 2-jar method, no change
Sent ECU back to Ivan who said it made his Strat misbehave in the same way, sent me different used reflashed ECU, worked for a while then misbehaved again. Sent me a third, brand new and reflashed ECU -- problem still exists. He thinks bike is sending too much voltage to ECU and that part is getting damaged. I would agree, except again, I went almost 3 months with it working perfectly, then it returned.
Inspected all pins connectors and plugs for damage, none visible
Put dielectric grease on all connections I could find -- this and replacing the air sensors was the last thing I did when the bike ran good for 3 months. Note: I did have some real trouble disconnecting the four plugs that run under the tank; three go to instrument panel which sits on tank, the other goes to fuel sender I think. I checked these for damage but couldn't find any.
Throttle bodies appear to close fully and function properly, no other problems when the bike is not misbehaving -- it runs awesome and the ECU being reflashed is the greatest improvement over stock available.
Took the bike to Yamaha, who couldn't do anything. Said the next item on the checklist was to replace the throttle bodies, which I'm not going to do yet as I don't think it's the issue.
I just bought a known-good stock ECU from a forum buddy, and I installed it last Friday, but haven't had the chance to run the bike since (except for just starting it in place, didn't misbehave).
I always thought it was the ECU being reflashed, but Ivan has reflashed almost every StratDelux forum members' bike I know and NONE have had any problems, ever. I'm the only one, and with 3 different units, so it's difficult to think that the ECU is the problem if the bike was 100% otherwise.
I truly apologize for the novel, but this has been going on since October 2014 so I've been trying to fix it since then.
What I haven't done yet, but probably should:
Check TPS according to service manual
Check fuel pump according to service manual
Try removing the O2 dummy plug that Ivan sent me, but leaving the O2 sensor out (plugged); I've always done both together to check if it was the problem
Really, REALLY take a close look at the throttle body connection to motor; look for anything strange. I did have to get "tough" with the PR BAK velocity stacks (anodized aluminum) to remove them way back when I did all the changes.
I can't think of anything else, although it's been hard to remember everything so I may have missed something.
Any ideas, things to check, etc. would be so greatly appreciated! I'm really ready to take my wife on a road trip but I'm afraid to with the bike running questionably -- will it or won't it??
Thanks for taking the time to read this and hopefully give me something to check.
// Radar //
Warning...VERY long post...sorry.
Hi, my problem is with my 2007 (XV19CTMW) Stratoliner 1854cc V-twin.
Here's the history:
Bought the bike back in September 2014; it had hardened tires and it backfired really bad between gears so I only rode it a mile or two before doing some improvements to it. It came with a Patrick Racing Big Air Kit (individual K&N filters, stock air box removed), V&H 2-1 full exhaust, V&H FuelPak fuel mgmt, O2 still installed.
ordered new tires, and while I was waiting for them to come in...
Replaced handlebars (through bar wiring)
Sent ECU out to be reflashed by Ivan Rovinski (Ivan's Performance Products) and installed it. Ivan has sold hundreds(?) of these to Strat owners I interact with and none have had any problems, just high praise. Agreed...huge improvement. As part of the installation, besides just popping it into place, Ivan has you use the PCIIIUSB to adjust the TPS to a certain level (voltage?) which I was able to do.
Replaced the FuelPak with a PCIIIUSB as Ivan has mapped it to improve performance even further (unable to do with FuelPak)
As per Ivan, removed the O2 and used a plug he sent me to put in the now open O2 plug lead
Removed PR BAK and reinstalled stock air box but without the airflow restricting lid and upgraded to K&N filter (common practice and recommended by Ivan
Other non-pertinent cosmetic changes
After doing all of this (at the same time), I started having my problem.
*The problem is INTERMITTENT, and sometimes it happens when it is cold, sometimes when hot...sometimes right away after starting (15 seconds), sometimes halfway to work (a 26 mile ride). Sometimes after riding it and the idle shoots up (sometimes as high as 2500 RPMs, I could shut it down, count to ten, then restart and it would be fine, other times that trick didn't do squat).
I actually went almost three months without it misbehaving even once, then all of a sudden started again...I had just filled up with gas and the gas gauge wasn't responding (happens sometimes and is a somewhat common issue with the Strat), so I reached under the front of the tank and wiggled with wires that run to my instrument cluster and gas gauge, and it started the problem again...shot up to 2200 RPMs and stayed there until I got her home.
The problem (code #37 "ISC stuck open"):
The bike starts fine, always. Then after about 15 seconds, if it's going to misbehave right away, the idle goes straight up to around 1500-2000 RPMs and stays there. I can't "kick it down" or do anything else to fix it once it starts. If I then turn the bike off via the key, I can hear the ISC valve "jamming" instead of buzzing back to the park position. As if it's already fully open and it gets a signal to open more and it tries but can't. If it's NOT misbehaving and I turn it off with the key, it just buzzes like it's supposed to as it parks. Using the kill switch just shuts the engine down and nothing happens.
What I've done (although done at different times over the months as I've thought to do them):
Called Ivan who said it is not the ECU but a faulty ISC valve. I replaced the ISC valve, no fix.
Checked throttle play, is good at 4mm
Checked throttle cables, no binding or problems
Checked the lines that go from ISC to throttle body; no breaks or cracks -- removed each one and put vacuum on them and they held 20lbs negative pressure
Went through entire on-board diagnostic and found nothing wrong except for the air pressure sensors didn't give the correct reading so I replaced them. Turns out I'd done the test wrong so that was for nothing
Replaced battery
Checked every wire that goes between ISC plug and ECU plug for continuity, all good
Replaced O2 sensor, no change
Removed PCIIIUSB, no change
Synchronized throttle bodies using the 2-jar method, no change
Sent ECU back to Ivan who said it made his Strat misbehave in the same way, sent me different used reflashed ECU, worked for a while then misbehaved again. Sent me a third, brand new and reflashed ECU -- problem still exists. He thinks bike is sending too much voltage to ECU and that part is getting damaged. I would agree, except again, I went almost 3 months with it working perfectly, then it returned.
Inspected all pins connectors and plugs for damage, none visible
Put dielectric grease on all connections I could find -- this and replacing the air sensors was the last thing I did when the bike ran good for 3 months. Note: I did have some real trouble disconnecting the four plugs that run under the tank; three go to instrument panel which sits on tank, the other goes to fuel sender I think. I checked these for damage but couldn't find any.
Throttle bodies appear to close fully and function properly, no other problems when the bike is not misbehaving -- it runs awesome and the ECU being reflashed is the greatest improvement over stock available.
Took the bike to Yamaha, who couldn't do anything. Said the next item on the checklist was to replace the throttle bodies, which I'm not going to do yet as I don't think it's the issue.
I just bought a known-good stock ECU from a forum buddy, and I installed it last Friday, but haven't had the chance to run the bike since (except for just starting it in place, didn't misbehave).
I always thought it was the ECU being reflashed, but Ivan has reflashed almost every StratDelux forum members' bike I know and NONE have had any problems, ever. I'm the only one, and with 3 different units, so it's difficult to think that the ECU is the problem if the bike was 100% otherwise.
I truly apologize for the novel, but this has been going on since October 2014 so I've been trying to fix it since then.
What I haven't done yet, but probably should:
Check TPS according to service manual
Check fuel pump according to service manual
Try removing the O2 dummy plug that Ivan sent me, but leaving the O2 sensor out (plugged); I've always done both together to check if it was the problem
Really, REALLY take a close look at the throttle body connection to motor; look for anything strange. I did have to get "tough" with the PR BAK velocity stacks (anodized aluminum) to remove them way back when I did all the changes.
I can't think of anything else, although it's been hard to remember everything so I may have missed something.
Any ideas, things to check, etc. would be so greatly appreciated! I'm really ready to take my wife on a road trip but I'm afraid to with the bike running questionably -- will it or won't it??
Thanks for taking the time to read this and hopefully give me something to check.
// Radar //
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