| Author |
Message |
    
Jsg4dfan
| | Posted on Sunday, September 23, 2007 - 08:46 pm: | 
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2003 XB9S, 3000 miles (bought at a great price as a leftover a little over a year ago). Bone stock. Has always run perfectly, but on the way to work this morning, while sitting at a red light, I noticed that the idle (which is normally a touch over 1000 rpm) had dropped down to about 750-800 rpm. After that, it would intermittently "stumble" (a light miss, you might say) at part throttle between 2500-4000 rpm (both at cruise and during acceleration). Full throttle/high rpm seems okay, but maybe a little down on power. It did the same thing on the way home today. When I got home, out of sheer frustration, I bounced it off the rev limiter in neutral for a few seconds, and it poured an impressive cloud of black smoke. I'm hoping that all I need is a TPS reset, because I'd really rather avoid the long visit to the dealer for it to behave perfectly, or for them to give me the all-too-common run around. I'm still under warranty, and I even have the extended warranty. Ideas? Anyone live near San Antonio that can do the reset for a few Sam Adams? |
Sparky
| | Posted on Sunday, September 23, 2007 - 11:23 pm: |
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I would suggest it's bad gas. Try draining out the gas and putting in fresh gas from a well known station.
If it's bone stock, does it still have the restrictor (the rubber sleeve dealie) in the air hole passage in the left side of the frame? If so, I'd take it out. Doing so may help with the full throttle black smoke cloud condition, or maybe not. |
Jsg4dfan
| | Posted on Thursday, September 27, 2007 - 11:02 pm: |
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I fueled up on the way home at a known good station (was almost empty at the time -- it took 3 gallons). Same deal.
Again -- is there someone in the San Antonio/Austin area that could do a TPS reset? |
Sparky
| | Posted on Friday, September 28, 2007 - 12:03 am: |
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Did the check engine light ever come on or how about error codes? Do you know how to retrieve error codes?
There usually has to be some kind of mechanical or sensor problem for it to act up all of a sudden. In reality, a zero TPS adjustment only needs to be done if changing the ECM or as part of periodic maintainance every 10k miles.
So, if the problem persists, take it to a dealer to diagnose and, worst case, plan on leaving the bike long enough to give them a chance to find out what's wrong.
But if it's an intermittant problem, nothing is more discouraging than spending your time and money trying to convince the service dept that your bike has a serious problem when the techs cannot duplicate the problem themselves. |
Jsg4dfan
| | Posted on Friday, September 28, 2007 - 09:57 pm: |
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No check engine light. Can there be error codes without a light? How do you check the codes? |
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Troubleshooting (Poor Starting/Running/Handling/Ride Issues) »
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'03 XB9S Low Idle/Stumbling/Surging