| Author |
Message |
    
Keisersozae
| | Posted on Friday, August 24, 2007 - 11:01 am: | 
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its actually a XB12R, wrote this before cofee. bought new in july, bike had 1400 miles last week when it first happened. riding to work, 5 miles in, 4th gear in traffic, starts spitting and popping trying to fire that 2nd cylinder. no check engine light. to the dealer we go. after they had it 4 days they said coil, coil ordered. 4 days later coil installed, same problem. i get into their ass about how i dont have another car, its fixed the next day. they said it was a wiring issue, something grounding out. this was tuesday i got it back with 1423 miles on it. today friday im riding to work aprox 8 miles in, same thing except not complete failure, it does it at a stop and at idle(wont actually idle), but as i excelerated it ran on both cylinders. bike now has 1467 miles on it. no check engine light has ever come on. any suggestions would be good as im pretty sure the dealer doesnt know whats going on with it.
(Message edited by keisersozae on August 24, 2007) |
Sparky
| | Posted on Friday, August 24, 2007 - 11:45 am: |
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The EFI is designed to cut out a cylinder when the ET sensor detects an overheat condition. But that may not be your problem especially if it was not overheating. Was it overheating? How hot were the conditions?
If you want to check out the engine temp sensors yourself, try very carefully examining the wiring to those sensors. Physically look for abrasion, nicks or cuts in the wire insulation.
If it's covered by warranty and the dealer said it's a wiring issue, they should replace the wiring harness, IMHO.
But, since the dealer is clueless, you might want to call Buell Customer Service and have them work with the dealer for direction and advice. The good folks at Buell know more about these bikes than anybody on the planet. |
Keisersozae
| | Posted on Friday, August 24, 2007 - 12:31 pm: |
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it wasnt overheating. temp outside this morning was 75 at 630 AM. what does IMHO mean? update as well, just went out to see if it would work because i need to go get lunch. hard to start, finally started on one cylinder, out the drive way then it was fine rode it about 3 miles just now with no problems. its got a short in there somewhere im convinced. |
Keisersozae
| | Posted on Saturday, August 25, 2007 - 11:12 am: |
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took it back to buell dealer, they were less than excited to see the bike back. put a whopping 50 miles on it between when i got it back on tuesday and it went back into the shop friday. man i miss my bike. |
Heyfred
| | Posted on Saturday, August 25, 2007 - 02:20 pm: |
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TPS setting is over 1 volt |
Keisersozae
| | Posted on Saturday, August 25, 2007 - 02:46 pm: |
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can you elaborate, if you were speaking to me |
Heyfred
| | Posted on Saturday, August 25, 2007 - 02:51 pm: |
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TPS setting is to high, needs to be less than 1v |
Keisersozae
| | Posted on Saturday, August 25, 2007 - 07:50 pm: |
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what is the tps setting? |
Heyfred
| | Posted on Sunday, August 26, 2007 - 12:45 am: |
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Keisersozae
| | Posted on Sunday, August 26, 2007 - 02:50 pm: |
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what does tps stand for? |
Keisersozae
| | Posted on Sunday, August 26, 2007 - 09:52 pm: |
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ok nevermind, i dont understand but thats ok. i think i may get to talk to someone tommorow about it and i will mention it to someone. so this tps setting being to high can cause problems like what im having? i dont want to look like an idiot when i mention it to whoever it is that i speak to. |
Dentfixer
| | Posted on Monday, August 27, 2007 - 08:14 am: |
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Throttle Position Sensor, TPS, is critical to proper functioning of the Fuel Injection system. Resetting it means to get the sensor reading zero volts when the throttle plate is 100% closed, ie. wedged against the mating surface of the throttle body throat. It is a base setting that all other functions depend on. If it is off for any reason, everything else will be off as well. Poor running guaranteed.
IMHO is short for "in my humble opinion". People often try to shorten their posts here with abbreviations like that. Above, it seems like folks were having a busy weekend and didn't reply to you quickly enough and/or completely enough. It happens. Be patient Derek and you will gleen tons of excellent information from this forum. It is one of the best around. |
Jsimpkins
| | Posted on Thursday, August 30, 2007 - 05:50 pm: |
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Just an FYI,
I think I may have stumbled onto something with my X1 and its stumbling
problems. I pretty much figured that the mixture was too lean between
1000 and 3500 RPM. So the issue was how to richen the mixture. I had
done a number of TPS resets and that did not clear the
problem up. So I decided to try and en-richen the
mixture by faking the ECU out. I did the normal TPS reset, pushing the
throttle forward until is slightly sticks. Then I zeroed it there. Next
I used the idle adjuster to slightly open the throttle while watching
the VDST until the throttle read .20 degree. I then zeroed the tps at
this point. THis causes the ECU to think the throttle is slightly more
open than it really is and this in turn en-richens the mixture just a
tad. The bike runs great now; I've experienced no stumbling, coughing
or surging since doing this. It also seems (seat of the pants) to make
more power as well. Its much easier to lift the front tire and carry it
than before. I also was able to get a top speed run of over 140MPH as well.
Just an FYI, not sure if you know about this trick. |
Al_lighton
| | Posted on Friday, August 31, 2007 - 01:47 am: |
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"Resetting it means to get the sensor reading zero volts when the throttle plate is 100% closed"
Close, but not exactly. Not zero volts, 0 degrees. The TPS reset command tells the ECM to go read the voltage, whatever it may be, when the throttle position sensor has been shut to 0 degrees/fully closed (after backing the throttle stop screw all the way off and gently wedging the plate in the bore). The absolute voltage that the TPS will be reading will vary from bike to bike, but the voltage change per degree of movement will be essentially identical from sensor to sensor, bike to bike. If the ECM knows what voltage zero degrees is, and it knows the voltage per degree relation, then it knows the throttle angle at all positions.
Jason,
I can see how your trick could work, but usually it has the opposite effect. Many times a TPS is reset with the throttle plate slightly open by a tech that hasn't followed the service bulletin properly and gently forced the plate closed. More often than not, doing so results in poor low throttle angle driveability.
But hey, if it worked, don't fight it, go ride that thing!!!
AL |
Keisersozae
| | Posted on Monday, September 03, 2007 - 02:44 pm: |
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hey im back. ok i called them last monday the 27th and they said that the plug wires were arcing so they were going to replace them and adjust the tps sensor. so you guys were maybe right. but its been a week and i havnt heard from them. i dont like calling up there everyday because i think they are getting annoyed with me but im kinda getting annoyed with them. bike was 2 months old yesterday, today is its 20th day in the shop. i dont know if they understand that people come to these boards to research and compare before they buy (the guys selling buells dont seem to know to much about them). they read about buell owners who love their bikes but they also read about these bikes having issues that arent fixed to quickly. i wish it was fixed. i wish they would call and let me know whats happening. i hate bashing them on here but its the truth. it may be the only way they ever change. |
Bombardier
| | Posted on Friday, September 07, 2007 - 07:05 am: |
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Try 8 days in the shop to tell me that there is something put into the tank of XBs from new that makes them run rough for about 2000 kilometres. How creative is that bullshit?!?!?!?!
I have bought a VDSTS and will let you all know how it goes . |
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