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FJR Motorcycle Forums
Technical & Mechanical Problems
2007 Gen 2 Runs crappy but no error codes
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<blockquote data-quote="Dan S" data-source="post: 1440553" data-attributes="member: 10575"><p>Last night I started it with a good deal of assistance from the starter fluid. Unplugged the O2 sensor and got no error and no change if rough idle. Then unplugged the air box temp sensor and it lit up the warning light but no change in rough idle. Plugged that back in, error light went out and then unplugged coolant temp sensor and the error light came on but no change in rough idle. Plugged it back in and the light went out. turned off the engine and checked error code history. It threw code 20 and 21 for the temp sensors but n error code for unplugging the O2 sensor. I also removed the right side cowl and checked the wire from the O2 sensor to the connector at the left end of the fuel rail but did not find any damage or pinch points. </p><p></p><p>Hmm, how do I check the O2 sensor voltage? I don't think a multimeter will read any quick fluctuations. And it's 4 wire so I might have to read the wiring diagram. </p><p></p><p>about feegerbkb's question. Is the 11.7 volt reading in diAG mode about right because I have 12.2 at the batter and 13.5 when it's running but 11.7 on the diAG mode. Maybe I should check the voltage at the fuel pump. Better yet I'm going to check the fuel pressure from the pump (although I'm not sure what normal is). </p><p></p><p>Steve (sapest), the gasoline in it right now was my last fillup coming home, The Dalles I think. It seemsed to run ok for the lst 100 miles, including some stop and go getting through Portland. And before leaving on my trip I drained the tank completely and put in 2 gallons of clear (no ethanol) and a half can of seafoam and took it for a spirited ride but that didn't help. </p><p></p><p>Please keep the ideas coming!!!!</p></blockquote><p></p>
[QUOTE="Dan S, post: 1440553, member: 10575"] Last night I started it with a good deal of assistance from the starter fluid. Unplugged the O2 sensor and got no error and no change if rough idle. Then unplugged the air box temp sensor and it lit up the warning light but no change in rough idle. Plugged that back in, error light went out and then unplugged coolant temp sensor and the error light came on but no change in rough idle. Plugged it back in and the light went out. turned off the engine and checked error code history. It threw code 20 and 21 for the temp sensors but n error code for unplugging the O2 sensor. I also removed the right side cowl and checked the wire from the O2 sensor to the connector at the left end of the fuel rail but did not find any damage or pinch points. Hmm, how do I check the O2 sensor voltage? I don't think a multimeter will read any quick fluctuations. And it's 4 wire so I might have to read the wiring diagram. about feegerbkb's question. Is the 11.7 volt reading in diAG mode about right because I have 12.2 at the batter and 13.5 when it's running but 11.7 on the diAG mode. Maybe I should check the voltage at the fuel pump. Better yet I'm going to check the fuel pressure from the pump (although I'm not sure what normal is). Steve (sapest), the gasoline in it right now was my last fillup coming home, The Dalles I think. It seemsed to run ok for the lst 100 miles, including some stop and go getting through Portland. And before leaving on my trip I drained the tank completely and put in 2 gallons of clear (no ethanol) and a half can of seafoam and took it for a spirited ride but that didn't help. Please keep the ideas coming!!!! [/QUOTE]
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Technical & Mechanical Problems
2007 Gen 2 Runs crappy but no error codes
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