I changed my plugs on my 05 xb12r to the dcpr9eix's and air filter to a K&N (the filter in her was from 05 and had holes in it!!! Now she starts up and idles great. He'll even rides great but the damn cel is staying on. When I first got the bike it would come on, go off. Come on, go off. Now it's just on consistently. I didn't gpa the plugs because I was always told by manufactures to never gap iridiums so shouldn't be that. Y'all have any ideas? I don't have a PC so I can't reset the tps or read the codes.
New plugs and air filter now cel
- Thread starter TCazes
- Start date
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user_deleted
Well-known member
you need to pull the codes. get simple insulated jumper wire and jump pins #1 and 2 on the ecm module plug. it is under front of fairing on firebolts...under seat on all others. use search window at top of forum page or google "cel code test-buell xb" and you'll find the procedure outlined and all the codes for your 05 firebolt. if it runs fine leave the plug gap alone. the iridium tipped ngks are gapped very close to factory specs right out of the box.
user_deleted
Well-known member
no. click on link below. then click on link contained within the post. everything you need is there. the CEL flashes any stored trouble codes. read up on it.
http://www.buellxb.com/Buell-XB-Forum/Buell-Lightning-XB12S-XB12Ss-CityX-XB12Scg/Trouble-Codes-08
http://www.buellxb.com/Buell-XB-Forum/Buell-Lightning-XB12S-XB12Ss-CityX-XB12Scg/Trouble-Codes-08
So I got
15 intake air temperature
16 battery voltage
21 interactive muffler control
36 fan voltage
The exhaust servo isn't even hooked up to anything the cable is gone.
The battery voltage reads fine so maybe bad cable?
The intake air temp I'm assuming is on due to the new filter?
Fan voltage goes with batt voltage is assume.
Where should I start?
15 intake air temperature
16 battery voltage
21 interactive muffler control
36 fan voltage
The exhaust servo isn't even hooked up to anything the cable is gone.
The battery voltage reads fine so maybe bad cable?
The intake air temp I'm assuming is on due to the new filter?
Fan voltage goes with batt voltage is assume.
Where should I start?
user_deleted
Well-known member
i don't know the history of your XB...who has been working on what...but regarding your codes do the following:
#15--check plug to sensor and make sure it is properly seated on sensor. you must access same by removing air cleaner assembly base and checking. if plug properly attached it is bad IAT sensor.
#16--check battery cables for cleanliness and tightness. they must be pristine. also check negative batt. cable frame attachment point. charge battery. test batt. standing volts. then start bike and at 3000rpm should have approx. 13.5-14.5 DC volts.....that's ballpark and will confirm charging system ok.
#21-control box on air cleaner cover lid. is wiring harness attached to it? does it cycle thru and appear to be working when you start bike? if not you'll get that code.
#36--usually faulty fan unit or oil from rear cylinder (rocker box gasket???) hitting fan causing it to slow down and eventually fail.
lastly....buy or borrow a factory service manual.
#15--check plug to sensor and make sure it is properly seated on sensor. you must access same by removing air cleaner assembly base and checking. if plug properly attached it is bad IAT sensor.
#16--check battery cables for cleanliness and tightness. they must be pristine. also check negative batt. cable frame attachment point. charge battery. test batt. standing volts. then start bike and at 3000rpm should have approx. 13.5-14.5 DC volts.....that's ballpark and will confirm charging system ok.
#21-control box on air cleaner cover lid. is wiring harness attached to it? does it cycle thru and appear to be working when you start bike? if not you'll get that code.
#36--usually faulty fan unit or oil from rear cylinder (rocker box gasket???) hitting fan causing it to slow down and eventually fail.
lastly....buy or borrow a factory service manual.
The iat is plugged up and clean so I'm guessing just failed. I work for an south parts store so I'm going to replace it with one from a 99 ranger (same part) and see if that code goes away
The exhaust servo doesn't cycle or move even though plugged up so I'll need to get with someone with ECM spy to remove that code or buy an emulator.
No leaks anywhere on the engine and fan seems to operate fine so I'm going to check it with a 12v source and measure current etc.
The battery cables are very tight and clean so I'm going to charge it while doing the above mentioned then start testing the charging system. The battery is from 2012 so may need a new one.
The exhaust servo doesn't cycle or move even though plugged up so I'll need to get with someone with ECM spy to remove that code or buy an emulator.
No leaks anywhere on the engine and fan seems to operate fine so I'm going to check it with a 12v source and measure current etc.
The battery cables are very tight and clean so I'm going to charge it while doing the above mentioned then start testing the charging system. The battery is from 2012 so may need a new one.
tested the battery. when starting it would drop down to 5 volts. changed the battery and the new one only drops to 11 when starting so that problem is fixed.
changed iat sensor. that problem is fixed
the fan shows some definite signs of resistance when turning by hand so ima disassemble and clean
went for a ride and the cel was gone! for about two miles. instead of staying on its now intermittent. when i got back home the battery voltage at 2500rpms was only 12.7 volts so not charging. also jumped pins 1 and 2 and i got all the same codes again. great. looks like i need to start testing the stator and voltage regulator. after all she is 10 years old almost and i have no clue if they have ever been changed. any tips on testing?
changed iat sensor. that problem is fixed
the fan shows some definite signs of resistance when turning by hand so ima disassemble and clean
went for a ride and the cel was gone! for about two miles. instead of staying on its now intermittent. when i got back home the battery voltage at 2500rpms was only 12.7 volts so not charging. also jumped pins 1 and 2 and i got all the same codes again. great. looks like i need to start testing the stator and voltage regulator. after all she is 10 years old almost and i have no clue if they have ever been changed. any tips on testing?
