nightster help
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Intermediate
Joined: Nov 2008
Posts: 31
Likes: 0
From: CT
nightster help
its a 2008 nightster. i got it with 900miles on it. it now has 5900miles. i put 5k and the bike has ran great.. when i got it it had V&H straight shots. the last fews day it started backfiring. so i put new plugs in and the same.. the stealer ship says i need a power commander and 3 hours for tuning for 700.. i just don't understand why the bike out the blue starts to run like this.. i pulled a code tonight of p0134 front oxygen sensor inactive.. what does this mean?
Cruiser
Joined: Mar 2010
Posts: 167
Likes: 0
From: warwick, ri
i'd say go with the vance and hines fuelpak, try that first.
http://www.fuelpakfi.com/harley1.html
generate the input for ur setup and see if that helps. it should do the job
http://www.fuelpakfi.com/harley1.html
generate the input for ur setup and see if that helps. it should do the job
Road Warrior
Joined: Dec 2009
Posts: 1,312
Likes: 28
From: Allyn, WA
I mean check every connection you can find. On the downtube, in front of the side covers are two. My bike did somewhat the same thing, it turns out one of those was loose, the plastic clamp had stretched so it was vibrating loose. Replaced the entire connection, and no problems.
Road Master
Joined: Jun 2009
Posts: 933
Likes: 1
From: Indianapolis
If you are throwing that code that means the oxygen sensor is either done or not hooked up correctly. If yo follow the harness from the sensor you will come to a connector make sure it is hooked up. Also make sure the oxygen sensor isn't loose.
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